Insulating the Roof

1 General

Buildings are designed to provide an interior environment (or shelter) that is not governed by the exterior environment. The roof is a fundamental component of this design and must perform several functions. As part of the roof assembly, properly designed and installed roof insulation provides the following benefits:

• It reduces energy costs and provides a comfortable interior environment by resisting heat loss.
• It can prevent condensation occurring on interior surfaces by raising the dew point above the roof deck.
• It generally provides a more suitable substrate for the membrane than does the roof deck.
• It reduces deck component temperature fluctuations and, therefore, the expansion and contraction of the deck.

The following disadvantages have been associated with “conventionally” placed roof insulation (i.e., insulation placed between the membrane and the roof deck):

• In hot weather the insulation resists heat flow into the building, thereby increasing the surface temperature of the membrane. This accelerates the aging (or oxidization) process of the membrane. In built-up roofing this can result in either the hardening and embrittlement of the bitumen, alligatoring, or splitting.
• By eliminating the problem of interior condensation, the insulation creates the possibility of moisture (vapour or liquid) trapped within the roof system. This can lead to numerous problems and may create the need for a vapour retarder.
• The frequency of thermal expansion and contraction in the membrane may be increased, thereby increasing the stresses on the membrane, which can result in membrane splitting.

A protected membrane roof assembly (PMR) may eliminate some of the possible disadvantages, but this assembly has its own characteristics (see Section 3.13 Protected Membrane and Modified Protected Membrane Roof Assemblies).

1.1 Theory

The function of insulation is to retard the flow of heat energy. Heat may flow in three ways:

• Conduction: the transfer of heat energy through direct contact molecule to molecule.
• Convection: the transfer of heat energy by the movement of liquid or gas.
• Radiation: the transfer of heat energy by electromagnetic waves.

Through the use of solid materials such as insulation in the roof assembly, the mode of heat transfer can be considered purely conductive. The rate at which a material allows heat transfer by conduction is referred to as its thermal conductivity (K or KSI). Conductivity is the basic unit of heat flow.

Thermal conductance (C or CSI) refers to the conductivity of a specific thickness of a material. The formula for determining the thermal conductance of a material is:

C =	K
	Unit of Thickness

Thermal resistance (R or RSI) refers to a material's resistance to heat flow, which is the reciprocal of its thermal conductance (C or CSI). Thermal resistances are additive and are therefore useful in design calculations. The formula for determining the thermal resistance of a material is:

R=	1	OR	unit of thickness
	C		K

The overall coefficient of heat transfer (U) is the time rate of heat energy flow for a complete assembly, including air films. To calculate the U-value, take the reciprocal of the additive total of the resistance, for example:

U =	1
	R1 + R2 + R3 etc

The units for these quantities can be either metric or standard. Metric units usually include “SI” (Systeme International d'Unites) after the unit symbol.

Thin air at inside and outside surfaces provides thermal resistance. Wind reduces outside air-film thickness, thus reducing its thermal resistance (R-value) as wind speed increases. The thermal resistances of indoor air films vary with the direction of heat flow. A ceiling air film has greater thermal resistance against downward heat flow because upward heat flow is accompanied by convective currents that disturb the air film and reduce its resistance to conductive heat flow.

If the space between the structural roof deck and the suspended ceiling is used as a return-air plenum, only R-values above the plenum should be considered.

1.2 Installation

The following procedures for installing insulation in roof systems should be followed:

1. On steel roof decks, deck flutes and felts should normally run in parallel alignment and be perpendicular to the roof slope.
2. On steel roof decks, insulation boards should be firmly supported by steel deck flanges. When only one layer of insulation is installed, the long dimension of insulation boards should not cantilever over steel deck flutes.
3. A staggered double-layer insulation system may provide the following benefits:

• • elimination of thermal bridges, where leakage of heating or cooling energy may occur.
  • reduced ridging, by eliminating through-joint migration of moisture vapour into the membrane, and subsequent deformation.
  • reduced ridging and splitting in the roof membrane.

1. The edges of insulation boards should be square, flush and have moderate contact with the edges of adjacent insulation boards. End joints between adjacent insulation boards should be staggered.
2. For heat sensitive insulations and heat insensitive foamed insulations, RGC Guarantee Standards should be consulted for fibreboard overlay requirements for Five (5) or Ten (10) RoofStar Guarantee requirements.
3. The specifier should not simply reference the thermal performance for a roof assembly by specifying the total R-value. The generic type, thickness, C-value, and applicable standards of the insulation required for application should also be specified.

2 Desirable Properties

Ideally, a roof insulation would provide the following physical properties:

1. Compatibility with Asphalt: it would not have an adverse chemical reaction upon contact with asphalt.
2. Compatibility with Roof System Components: it would be compatible with the other components of the roof system. This is of special concern with flexible membranes (bituminous or non-bituminous) and the solvents, adhesives, application methods, etc. involved in their application.
3. Resistance to Thermal Conductivity: the lower the thermal conductivity, the less thickness of insulation is required to obtain the desired thermal resistance.
4. Resistance to Fire: it would not support combustion and would comply with the accepted fire rating.
5. Resistance to the Effects of Moisture: it would not be adversely affected by moisture vapour and free water.
6. Resistance to Cell Deterioration: it would be of a material that is durable and not subject to deterioration.
7. Resistance to Impact: it would be resistant to impact damage - providing rigidity and strength; and of sufficient density to provide a workable surface.
8. Dimensional Stability: it would be unaffected by varying moisture and temperature conditions, and resistant to thermal cycling.
9. Unaffected by Asphalt Application Temperatures: it would not “burn out” or deform due to the application temperatures of asphalt.
10. Stable K-value: the thermal conductivity would remain stable and would not drift higher with age.
11. Attachment Capability: its surfaces would accommodate secure attachment by traditional methods (roofing nails, or screws and plates).

The remaining sections of Section 3.6 will discuss some of the roof insulations available in British Columbia. This includes generic information on the insulation type, and product information for some of the RGC Accepted Materials. The generic information will discuss the properties of the materials relative to their use and to similar materials. The product information that has been included is taken from referenced publications.

2.1 Required Properties RGC ACCEPTED INSULATION - QUICK REFERENCE CHART

TBA

3 Insulation Types

3.1 Tapered Roof Insulation Systems

NOTE: See also Accepted Roof Deck Insulation products

Tapered roof insulation systems are generally available in three forms:

• Field-sloped lightweight insulating concrete roof fill
• Field-tapered perlitic insulation boards
• Factory-tapered insulation boards

For a discussion of field-sloped lightweight insulating concrete roof fill systems see the Section entitled Roof Decks.

Field-tapered perlitic insulation board systems consist of multiple layers of square-edged perlite boards that are tapered by cutting or grinding in the field.

Factory-tapered insulation board systems are the ones most commonly used because they are inexpensive and easy to use. The insulation boards can be tapered to provide slopes of 1:200 (1/16" in 12") or greater. The following types of insulation are factory-tapered:

• Extruded polystyrene
• Expanded polystyrene
• Polyisocyanurate
• Fibreboard

3.2 Composite Board Insulation and Overlay Boards

NOTE: See also Accepted Roof Deck Insulation products

Composite board roof insulation products consist of an insulation bonded with another insulation and / or a variety of other products (typically fibreboard, perlite, membranes, etc.) to form a unified, multi-layered insulation board. The top and bottom surfaces of the board may be impregnated and / or coated with asphalt (or other binders), and covered with facing materials such as roofing felts, foils, kraft paper modified bituminous membranes, etc.

The properties and performance of composite board roof insulation varies with the components of the board. Generally, the boards are manufactured to provide some of the following properties and advantages:

• Compatible with asphalt,
• Resistant to thermal conductivity,
• Resistant to fire,
• Resistant to the effects of moisture,
• Resistant to cell deterioration (durable),
• Resistant to impact, and / or
• Unaffected by asphalt application temperatures (no overlay may be required).

The possible disadvantages and precautions involved in the use of composite board insulations include:

• Complexity of manufacture and dissimilar materials,
• Sometimes expensive, and
• Limited availability

3.3 Glass Fibreboard (Fibreglass)

NOTE: See also Accepted Roof Deck Insulation products

Glass fibreboard roof insulations are composed of fine glass fibres compressed into rigid insulation boards. These boards are most commonly available top-surfaced with a glass fibre-reinforced asphalt and kraft paper. This provides a suitable surface for directly mopped bituminous membranes and for some flexible membrane roof systems. In addition, boards made of glass fibres bound in a resinous binder are available either top-surfaced for bituminous roofing, or plain for use under ballasted membrane systems.

Glass fibreboard roof insulation may provide the following properties and advantages:

• Compatible with asphalt,
• Compatible with most roof system components,
• Resistant to thermal conductivity,
• Resistant to fire,
• Resistant to the effects of moisture,
• Resistant to cell deterioration (durable),
• Resistant to petroleum solvents,
• Resistant to impact (if top-surfaced),
• Resistant to thermal cycling (dimensionally stable),
• Unaffected by asphalt application temperatures (no fibreboard overlay required),
• Stable K-value (the thermal conductivity does not change with aging),
• Conforms to minor deck irregularities, and / or
• Retains roofing nails (first layer in a two-layer application only).

The possible disadvantages or precautions involved in the use of glass fibreboard insulation include:

• The kraft paper facing may change dimensionally if allowed to absorb moisture (protect from weather prior to application), and / or
• Heavy equipment may compress the insulation and cause delamination of the membrane.

Glass fibreboard roof insulation should meet or exceed CAN / CGSB-51.31-M84.

3.4 Extruded Expanded Polystyrene Foam

NOTE: See also Accepted Roof Deck Insulation products

(See also section 7 below, Expanded Polystyrene Foam and Protected and Modified Protected Roof Systems)

Molten polystyrene and a blowing agent HCFC (142B) are mixed, under pressure, in an extruder. As this solution is extruded through an orifice into ambient temperature and controlled conditions, the blowing agent vapourizes causing the polystyrene to expand approximately 30 times its original size. The continuous extrusion process produces boards with a surface “skin” and closed cell structure and, for this reason, has been used extensively for protected membrane roof assemblies. The rigid insulation boards are expanded to a specific thickness during manufacture and have an approximate density of 32 kg / cu. m (2 lb / cu.ft).

Extruded expanded polystyrene foam roof insulation is combustible and, when used on steel decks or over a roof that is subject to fire exposure from below, a fire-rated underlayment or thermal barrier (such as gypsum board) may be required between the roof deck and the insulation (consult Building Code and insurance requirements).

Extruded expanded polystyrene roof insulation is manufactured to CAN / ULC-S701 standard and is currently available in three types (depending on physical properties) and in four forms, as follows:

• Type 4 for use on conventional or protected membrane roofing systems
• Type 4 with a factory-applied latex-modified concrete topping for protected membrane roofing systems
• Type 3 for use on conventional roof systems
• Type 2 for use on conventional roofing systems [density of 24 kg / cu.m (1.5 lb / cu.ft)]

Extruded polystyrene roof insulation provides the following properties and advantages:

• Compatible with asphalt
• Resistant to the effects of moisture
• Resistant to cell deterioration (durable)
• Resistant to impact
• Resistant to thermal conductivity
• Stable K-value

The possible disadvantages or precautions involved in the use of extruded polystyrene roof insulation include:

• Flammable (combustible)
• Affected by solvents (i.e. adhesives and cleaners used for single ply membranes)
• Heat sensitive [requires an insulation overlay, such as fibreboard, to prevent “melting” (burnouts) from hot asphalt]
• Will not retain nails (requires screws and plates)
• Dimensional instability may result from improper curing at the factory

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3.5 OWENS CORNING CANADA INC.

Manufacturer: OWENS CORNING CANADA INC.

Contact Address: See Membership List Section 1

Product Group: EXTRUDED, EXPANDED POLYSTYRENE INSULATION

Country of Origin: United States

Country of Manufacture: Canada, United States, locations worldwide

DESCRIPTION

The roofing assembly / material information published in the RGC Roofing Practices Manual does NOT represent a complete set of the manufacturer's published data, nor does it represent a detailed specification. The preparation of a detailed specification is the responsibility of the design authority.

FOAMULAR® C200 (Type 3)

FOAMULAR® C200® insulation is specifically designed to provide high quality, economical insulation for conventional roofs, with single-ply, two-ply or four-ply roof membranes.

FOAMULAR® C200® insulation is an extruded, Type 3 CAN / ULC S701 polystyrene foam. It has excellent insulating characteristics (RSI-.088 per 25 mm [R 5.0 per inch] of thickness), compressive strength (140 kPa or 20 psi) and low water absorption (less than 0.7%).

FOAMULAR® C200® has a smooth, high-density skin, and a closed cell structure, with ship-lapped or square edges on four sides. It is uniform in thickness and consistency, and is easy to cut and handle. When installing, FOAMULAR® C200® can be either loose applied or attached to the substrate with mechanical fasteners, hot asphalt or adhesive. Board size is 600 mm x 2400 mm (2' x 8'), in thickness ranging from 25 mm - 100 mm (1" - 4").

FOAMULAR® F350 (Type 4)

FOAMULAR® F350 insulation is an extruded, Type 4 CAN/ULC-S701/CAN/CGSB-51.20-M87 polystyrene rigid board designed specifically for roof applications. It is suitable for use in both protected membrane and conventional roof assemblies

The extruded board has smooth, high-density skins, shiplap edges on four sides and a very dense closed-cell foam structure. Board size is 600 mm x 1200 mm (2' x 4'), in thickness ranging from 25 mm to 100 mm (1" to 4"). FOAMULAR® F350 has one of the highest thermal resistance values, an aged (RSI value of 0.88 per 25 mm (R 5.0 per inch). It has excellent water resistance characteristics (absorption of less than 0.7%) and a high compressive strength of 240 kPa (35 psi).

FOAMULAR® F350 is ideal for use in both standard and lightweight protected membrane roof systems and can be adhered or loosely applied. It is lightweight, easy to cut and simple to install year round.

FOAMULAR® F350 CVI (Type 4)

FOAMULAR® F350 CVI insulation is an extruded, Type 4 CAN/ULC-S701/CAN/CGSB-51.20-M87 polystyrene rigid board designed specifically for roof applications. It is suitable for use in both protected membrane and conventional roof assemblies.

The extruded board has smooth, high-density skins, shiplap edges on four sides and a very dense closed-cell foam structure. Board size is 600 mm x 1200 mm (2' x 4'), in thickness ranging from 25 mm to 100 mm (1" to 4"). FOAMULAR® F350 CVI has one of the highest thermal resistance values, an aged (RSI value of 0.88 per 25mm (R 5.0 per inch). It has excellent water resistance characteristics (absorption of less than 0.7%) and a high compressive strength of 240 kPa (35psi).

Owens Corning developed the FOAMULAR® 350 CVI board with drainage channels on the underside and around the entire perimeter. Compared to the FOAMULAR® 350 board, the FOAMULAR® 350 CVI board has the additional advantage of facilitating the flow of water infiltrated under the insulating boards to the waterproofing system's surface and drains.

FOAMULAR® F350 CVI is ideal for use in both standard and lightweight protected membrane roof systems and can be adhered or loosely applied. It is lightweight, easy to cut and simple to install year round.

FOAMULAR® 400/600/1000 (Type 4)

FOAMULAR® 400/600/1000 insulation is an extruded Type 4 CAN/ULC-S701-CAN/CGSB-51.20-M87 polystyrene rigid board insulation that is specifically designed to provide high quality, economical insulation for conventional roofs, with single-ply, two-ply or four-ply roof membranes.

The extruded board has smooth, high-density skins, shiplap or Square edges on four sides and a very dense closed-cell foam sturcture. Board size is 600 mm x 1200 mm (2'x 8'), in thickness ranging from 25 mm to 100 mm (1" to 4"). FOAMULAR® 400/600/1000 has one of the highest thermal resistance values, an aged (RSI value of 0.88 per 25 mm (R5.0 per inch). It has excellent water resistance characteristics (absorption of less than 0.7%) and a high compressive strength of 275 kPa, 415 KPa, 690 KPa (40 psi, 60 psi, and 100 psi).

FOAMULAR® 400/600/1000 is ideal for use in both standard and lightweight protected membrane roof systems and can be adhered or loosely applied. It is lightweight, easy to cut and simple to install year round.

FOAMULAR® 404/604 and FOAMULAR® 404 RB/604 RB (Type 4)

FOAMULAR® 404/604 and FOAMULAR® 404 RB/604 RB insulation is an extruded Type 4 CAN/ULC-S701-CAN/CGSB-51.20-M87 polystyrene rigid board insulation that is specifically designed to provide high quality, economical insulation for conventional roofs, with single-ply, two-ply or four-ply roof membranes.

The extruded board has smooth, high-density skins, shiplap or Square edges on four sides and a very dense closed-cell foam structure. Board size is 600 mm x 1200 mm (2' x 8'), in thickness ranging from 38 mm to 76 mm (1.5" to 3"). FOAMULAR® 404/604 and FOAMULAR® 404 RB/604 RB has one of the highest thermal resistance values, an aged (RSI value of 0.88 per 25 mm (R 5.0 per inch) for the FOAMULAR® 404/604 and (RSI value of 0.84 per 25 mm (R 4.75 per inch) for the FOAMULAR® 404 RB/604 RB. It has excellent water resistance characteristics (absorption of than 0.05%) and a high compressive strength of 275 kPa, 415 KPa, 690 KPa (40 psi, 60 psi and 100 psi).

Owens Corning developed the FOAMULAR® 404/604 boards with drainage channels around the board perimeter. Compared to a FOAMULAR® 400/600 board, the FOAMULAR® 404/604 board has the additional advantage of facilitating the flow of water infiltrated under the insulating boards to the waterproofing system's surface and drains.

The FOAMULAR® 404 RB/604 RB boards have as the additional feature of top side channels that help facilitate the flow of water to the system's drains.

FOAMULAR® 404/604 and FOAMULAR® 404 RB/604 RB is ideal for use in both standard and lightweight protected membrane roof systems and can be adhered or loosely applied. It is lightweight, easy to cut and simple to install year round.

4 Expanded Polystyrene Foam

NOTE: See also Accepted Roof Deck Insulation products

(See also section 6 above, Extruded Expanded Polystyrene Foam)

Third Party Certification: RGC welcomes and accepts the industry recommendation presented by all EPS manufacturers currently active in the B.C. market to require third party certification of the EPS products meeting CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87) requirements. It is understood that such a certification program requires annual inspections / recertification by an independent testing lab.

Molten polystyrene and a blowing agent are mixed and formed into uniform closed-cell structures (“beads”). These are later expanded up to 40 times by steam in a pre-expander. (The amount of expansion determines the density and, therefore, the thermal conductivity of the final product.) The expanded beads are stabilized in curing bins, fused into a billet in a block mold, and cut into the desired size, shape and thickness. This process produces rigid boards of interconnecting closed cells of densities varying from 16 to 48 kg / cu.m (1 to 3 lb / cu.ft). Expanded polystyrene insulation is commonly referred to as “beadboard” or “popcorn”.

Expanded polystyrene roof insulation is presently manufactured to the CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87) standard and is available in four types, depending on the physical properties of the material. Basically, the strength (tensile, compressive, flexural, and shear) and thermal resistance properties increase, and the water vapour permeance and water absorption properties decrease from Type 1 to Type 4. (For Type 2 and Type 4 see also section 6 above, Extruded Expanded Polystyrene). Note: Type 4 is usually, if not always, extruded.

Expanded polystyrene foam roof insulation is combustible and, when used on steel decks or over a roof that is subject to fire exposure from below, a fire-rated underlayment or thermal barrier (such as gypsum board) may be required between the roof deck and the insulation (consult Building Code and insurance requirements).

Expanded polystyrene foam roof insulation provides the following properties and advantages:

• Compatible with asphalt
• Resistant to the effects of moisture
• Resistant to cell deterioration (durable)
• Resistant to impact
• Resistant to thermal conductivity
• Stable K-value (the thermal conductivity does not change with aging)

The possible disadvantages or precautions involved in the use of expanded polystyrene roof insulation include:

• Flammable (combustible)
• Affected by solvents (i.e. adhesives and cleaners used for single-ply membranes)
• Heat sensitive [requires an insulation overlay (such as fibreboard) to prevent “burnouts” from hot asphalt]
• Will not retain nails (requires screws and plates)
• Dimensional instability may result from improper curing at the factory.

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4.1 MANSONVILLE PLASTICS (B.C.) LTD.

Manufacturer: MANSONVILLE PLASTICS (B.C.) LTD.

Contact Address: See Membership List, Section 1

Product Group: EXPANDED POLYSTYRENE INSULATION

Country of Origin: Canada

Country of Manufacture: Canada

DESCRIPTION

The roofing assembly / material information published in the RCABC Roofing Practices Manual does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Korolite and Koroslope expanded polystyrene (EPS) manufactured by Mansonville Plastics (B.C.) Ltd. are rigid roof insulations, suitable for a variety of roof systems, supplied in both flat and sloped profiles. These insulations are closed cell, light weight and, because of their unique cellular structure, assure permanent thermal values.

They are 100% free of ozone depleting CFC’s and HCFC’s and can be recycled.

KOROLITE REGULAR INSULATION

This EPS flat insulation is the most popular insulation and provides the best value for thermal resistance in most roofing applications.

Thermal Resistance :	RSI = 0.65 / 25 mm (R Value = 3.75 / in.)
Uses:	All conventional roofs for single ply, 2 ply modified and built up roof membranes.
Standards:	Conforms to CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87) Type 1 thermal insulation expanded polystyrene.
Standard Sizes:	0.6 m x 1.2 m (24" x 48")	1.2 m x 1.2 m (48" x 48")	1.2 m x 2.4 m (48" x 96")
	Any thickness that is required to meet thermal requirements.

KOROLITE HD INSULATION

This EPS flat insulation is used when the roof design dictates the need for a greater compressive and thermal value.

Thermal Resistance :	RSI = 0.70 / 25 mm (R Value = 4.0 / in.)
Uses:	All conventional roofs for single ply, 2 ply modified and built up roof membranes; providing a higher thermal and compressive strength than Korolite Regular Insulation.
Standards:	Conforms to CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87) Type 2 thermal insulation expanded polystyrene.
Standard Sizes:	0.6 m x 1.2 m (24" x 48")	1.2 m x 1.2 m (48" x 48")	1.2 m x 2.4 m (48" x 96")
	Any thickness that is required to meet thermal requirements.

KOROSLOPE TAPERED INSULATION

Koroslope is a modular tapered insulation roof system designed to provide positive drainage of water on flat roofs.

• Custom computerized design and roof layout drawings are provided.
• The most commonly used slopes are 1:100 (1/8" in 12") and 1:50 (1/4" in 12")
• Can be supplied in Type 1 or Type 2
• Thermal Resistance: same as flat Type 1 or 2 per inch or mm of thickness
• Meets the same CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87) Type 1 and 2 specification

Uses:

• To add slope to all conventional roofs for single ply, 2 ply, and built up roof membranes
• Crickets and backslope to direct water away from walls and projections and to provide slope in valleys, can also be supplied.

Standard Sizes: 1.2 m x 1.2 m (48" x 48")

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4.2 PLASTI-FAB, division of PFB Corporation

Manufacturer: PLASTI-FAB, division of PFB Corporation

Contact Address: See Membership List in Section 1.

Product Group: EXPANDED POLYSTYRENE INSULATION

Country of Origin: Canada

Country of Manufacture: Canada

DESCRIPTION

The roofing assembly / material information published in the RGC Roofing Practices Manual does NOT represent a complete set of the manufacturer's published data, nor does it represent a detailed specification. The preparation of a detailed specification is the responsibility of the design authority.

The Plasti-Fab™ PlastiSpan® trademark is applied to a series of moulded expanded polystyrene insulations (EPS) insulation materials manufactured by Plasti-Fab. These insulation materials are lightweight, easy to handle rigid thermal insulation materials. The closed cell structure of PlastiSpan insulation materials does not contain a captive blowing agent - e.g. HCFC’s - and assures constant thermal resistance properties. PlastiSpan insulation is manufactured in a range of densities and forms for use as a component in roofing assemblies.

PLASTISPAN INSULATION (TYPE 1)

PlastiSpan insulation identifies the most widely used PlastiSpan insulation in the family with a nominal density of 16 kg / m³ (1.0 lb / ft³). It provides the best thermal resistance value in most roofing applications.

Thermal Resistance:	RSI = 0.65 m2•OC / (W•25 mm)/R Value = 3.75 Ft 2•hr• OF/(BTU•in)
	Compressive Resistance @ 10% Deformation: 70 kPa / 10 psi
Uses:	•Any conventional roofs with single-ply, two-ply or four-ply membranes where EPS insulation is permitted.
	• Under shingles (for cathedral ceilings).
Standards:	• Conforms to CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87), Type 1 expanded polystyrene thermal insulation.
	• Meets Building Code requirements for foamed plastic thermal insulation.
	• CCMC Evaluation Listing 12424-L.
Standard Sizes:	0.6 m x 1.2 m (24" x 48")	0.6 m x 2.4 m (24" x 96")
	0.8 m x 1.2 m (32" x 48")	1.2 m x 2.4 m (48" x 96")
	1.2 m x 1.2 m (48" x 48")
	Any thickness to meet thermal requirements.

PLASTISPAN HD INSULATION (TYPE 2)

PlastiSpan HD insulation identifies a thermal insulation with a normal density approximately 50% higher than PlastiSpan insulation (Type 1) at 24 kg / m³ (1.5 lb / ft³).

Thermal Resistance:	RSI = 0.70 m2•OC / (W•25 mm)/R Value = 4.04 Ft 2•hr• OF / (BTU•in)
	Compressive Resistance @ 10% Deformation: 110kPa / 16 psi
Uses:	•Any conventional roofs with single-ply, two-ply or four-ply membranes where EPS insulation is permitted.
	• Under shingles (for cathedral ceilings).
	• Used in any roofing applications in which heavier roof loads require a higher compressive strength than PlastiSpan insulation (Type 1).
Standards:	• Conforms to CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87), Type 2 expanded polystyrene thermal insulation.
	• Meets Building Code requirements for foamed plastic thermal insulation.
	• CCMC Evaluation Listing 12425-L.
Standard Sizes:	0.6 m x 1.2 m (24" x 48")	0.6 m x 2.4 m (24" x 96")
	0.8 m x 1.2 m (32" x 48")	1.2 m x 2.4 m (48" x 96")
	1.2 m x 1.2 m (48" x 48")
	Any thickness to meet thermal requirements.

PLASTISPAN INSULATION (TYPE 3)

PlastiSpan insulation (Type 3) identifies a thermal insulation with a nominal density approximately 100% higher than PlastiSpan insulation (Type 1) at 32 kg / m³ (2.0 lb / ft³).

Thermal Resistance:	RSI = 0.74 m2•OC / (W•25 mm) / R Value = 4.27 Ft 2•hr• OF / (BTU•in)
	Compressive Resistance @ 10% Deformation: 140kPa / 20 psi
Uses:	•Any conventional roofs with single-ply, two-ply or four-ply membranes where EPS insulation is permitted.
	• Under shingles (for cathedral ceilings).
	• Used in any roofing applications in which heavier roof loads require a higher compressive strength than PlastiSpan insulation (Type 1) or PlastiSpan HD insulation (Type 2).
Standards:	• Conforms to CAN / ULC-S701-97 / (CAN / CGSB-51.20-M87), Type 3 expanded polystyrene thermal insulation.
	• Meets Building Code requirements for foamed plastic thermal insulation.
	• CCMC Evaluation Listing 12426-L.
Standard Sizes:	0.6 m x 1.2 m (24" x 48")	0.6 m x 2.4 m (24" x 96")
	0.8 m x 1.2 m (32" x 48")	1.2 m x 2.4 m (48" x 96")
	1.2 m x 1.2 m (48" x 48")
	Any thickness to meet thermal requirements.

PLASTISPAN SLOPED INSULATION

The complete family of PlastiSpan insulation materials is available in both flat and sloped profiles. All roofing experts agree that adding a slope to the top surface of the roof assembly, however small, will provide positive drainage, eliminate pooled water, and can extend the life of the roof assembly. For sloped roofs, Plasti-Fab provides PlastiSpan insulation cut with a taper across the 1.2-rn (48") width. A predetermined layout of the tapered insulation boards is provided by Plasti-Fab in order to include a 1:50 (1/4" in 12") or 1:100 (1/8" in 12") positive slope to the drains.

Special sizes, “crickets”, and back slopes are available; custom computerized design of PlastiSpan sloped insulation boards layout is provided.

5 Polyurethane Foam

NOTE: See also Accepted Roof Deck Insulation products

Polyurethane foam is the result of a chemical reaction between two liquids, isocyanate and polyols, in combination with additives and catalytic agents. The mixture begins to foam instantly and quickly expands to approximately 30 times its original volume. The foam hardens into an airtight mass, becoming tack-free in minutes.

The insulating properties of the foam are derived from fluorocarbon vapour trapped in the foam's cells. Polyurethane roof insulation boards are generally available in either:

• flat sheets of varying size and thickness that have been cut from large buns (or billets)
• surfaced boards where the polyurethane is foamed between two skins (felt, aluminum foil, etc.) which become an integral part of the product.

Polyurethane foam roof insulation is combustible and, when used on steel decks or over a roof that is subject to fire exposure from below, a fire-rated underlayment or thermal barrier (such as gypsum board) should be installed between the roof deck and the insulation.

Polyurethane foam roof insulation is presently manufactured to two standards:

CGSB 51-GP-21M applies to unfaced polyurethane rigid insulation boards intended for applications where the continuous use surface temperature does not exceed +80°C (+176°F). This standard establishes three types (Type 1, 2 and 3) and three classes (Class 1, 2 or 3) of polyurethane insulation. The type is determined by the physical properties of the material and the class is determined by its surface burning characteristics.

CAN / CGSB-51.26-M86 applies to faced polyurethane rigid insulation boards intended for applications where the continuous use temperature is within -60°C to +80°C (-76°F to +176°F). This standard establishes four types (Type 1, 2, 3, or 4), four facing categories (Facing 1, 2, 3, or 4), and two surface burning characteristic classifications (surface burning characteristic “a” or “b”). The type is determined by the physical properties of the foam, the “facing” is determined by the product the polyurethane is foamed between, and the surface burning characteristic is derived from the final product's flame spread classification.

Polyurethane insulation provides the following properties and advantages:

• Compatible with asphalt
• Compatible with roof system components
• Resistant to the effects of moisture
• Resistant to cell deterioration
• Resistant to impact
• Resistant to thermal conductivity
• Unaffected by asphalt application temperatures.

The possible disadvantages or precautions involved in the use of polyurethane foam insulation include:

• Flammable (combustible)
• Requires an insulation overlay (fibreboard, vented base sheet, etc.) to prevent potential asphalt blistering
• Aged thermal resistance should be used for design calculations
• Felt skin may change dimensionally if exposed to weathering (provide protection prior to installation)
• Heavy equipment may compress insulation, causing deflections in the deck and debonding of the insulation
• Will not retain nails (requires screws and plates)

6 Polyisocyanurate Foam

NOTE: See also Accepted Roof Deck Insulation products

Polyisocyanurate is a closed-cell rigid foam material. The insulation boards are manufactured with asphalt-saturated felt, glass fibre or acrylic facer sheets on the top or bottom of the foam core. In some cases the foam core is reinforced with glass fibre or acrylic to provide additional fire resistance and greater dimensional stability.

Polyisocyanurate foamboard roof insulation is presently manufactured to two standards:

• CAN / ULC S704-01 (CGSB 51-GP-21M) applies to unfaced polyisocyanurate rigid insulation boards intended for applications where the continuous use surface temperature does not exceed +110°C (+230°F). This standard establishes one type (Type 4) and three classes (Class 1, 2 or 3) of polyisocyanurate insulation. The type is determined by the physical properties of the material and the class is determined by its surface burning characteristics.

• CAN / ULC S704-01 (CAN / CGSB-51.26-M86) applies to faced polyisocyanurate rigid insulation boards intended for applications where the continuous use temperature is within -60°C to +80°C (-76°F to +176°F). This standard establishes four types (Type 1, 2, 3, or 4), four facing categories (Facing 1, 2, 3, or 4), and two surface burning characteristic classifications (surface burning characteristic “a” or “b”). The type is determined by the physical properties of the material, the facing is determined by the product the insulation is foamed between, and the surface burning characteristic is derived from the final product's flame spread classification. RoofStar Guarantee Standards require that polyisocyanurate insulation manufacturers clearly identify the manufacturing date on product labels.

Polyisocyanurate insulation provides the following properties and advantages:

• Compatible with asphalt
• Compatible with roof system components
• Resistant to the effects of moisture
• Resistant to cell deterioration
• Resistant to impact
• Resistant to thermal conductivity
• Resistant to fire
• Resistant to thermal cycling (dimensionally stable)
• Unaffected by hot asphalt
• Retains mechanical fasteners

The possible disadvantages or precautions involved in the use of polyisocyanurate foam insulation include:

• Requires an insulation overlay (fibreboard or retrofit board) to prevent potential asphalt blistering
• Aged thermal resistance Long Term Thermal Resistance (LTTR) tested to CAN / ULC -S770 should be used for design calculations.
• Felt skin may change dimensionally if exposed to weathering (provide protection prior to installation)
• Heavy equipment may compress insulation, causing deflections and de-bonding of the membrane
• Will not retain nails (requires screws and plates)

6.1 Storage and Handling

See the Technical Update for January 12, 2012 concerning an issue of moisture in packaged polyisocyanurate insulation bundles. Also consult the PIMA Technical Bulletin #109 for storage and handling guidelines.

7 Fibreboard Roof Insulation

NOTE:See also Accepted Roof Deck Insulation products by clicking on this link.

Fibreboard insulation is composed of wood, cane, or other vegetable fibres and waterproofing binders. A water slurry containing the wood fibres and waterproofing binders is deposited onto a moving screen. The water drains through the screen and the remaining mass is heated in an oven or dryer to produce the finished product. Fibreboard roof insulation is produced in several forms:

• Plain
• Impregnated with asphalt or petroleum based paraffin
• Coated with asphalt

Fibreboard Roof Insulation that is adhered in a roof assembly with hot asphalt or asphaltic-based adhesives must have an asphalt coating on the top and bottom surfaces (minimum coated two sides) to meet RGC Guarantee Standards. Fibreboard for use as roofing insulation is manufactured to meet or exceed the requirements of CAN / ULC-S706 (Insulating Fibreboard), Type I (Roof Board).

Fibreboard roof insulation provides the following properties and advantages:

• Compatible with asphalt
• Compatible with most roof system components
• Resistant to thermal conductivity
• Resistant to cell deterioration (durable)
• Resistant to impact
• Resistant to thermal cycling (dimensionally stable)
• Unaffected by asphalt application temperatures (no overlay required)
• Stable K-value (the thermal conductivity does not change with aging)
• Retains roofing nails

The possible disadvantages or precautions involved in the use of fibreboard insulation include:

• Flammable (Combustible)
• Absorbs moisture (protect from the effects of weathering)
• Low thermal values
• Organic in nature and will rot on exposure to moisture.

7.1 Building Products of Canada Corp.

• Petroleum Paraffin-impregnated fibreboard conforming to CAN / ULC - S706-09

7.2 IKO INDUSTRIES INC.

• Asphalt-impregnated coated fibreboard conforming to CAN / ULC - S706-09

7.3 LOUISEVILLE SPECIALTY PRODUCTS INC.

• Petroleum Paraffin - Natural Fibreboard conforming to CAN / ULC - S706-09
• Petroleum Paraffin - High Density natural Fibreboard conforming to CAN / ULC - S706-09
• Asphalt Coated (6 sides) Natural Fibreboard conforming to CAN / ULC - S706-09
• Asphalt and Wax Impregnated Fibreboard conforming to CAN / ULC - S706-09
• Asphalt and Wax Impregnated High Density Fibreboard conforming to CAN / ULC - S706-09
• Securpan - Fire Resistant Fibreboard conforming to CAN / ULC - S706-09
• Securpan - Asphalt Coated (one side) Fire Resistant Fibreboard conforming to CAN / ULC - S706-09

8 Perlitic

NOTE:See also Accepted Roof Deck Insulation products by clicking on this link.

Perlite ore is a volcanic glass with a natural water content characteristic. When this ore is heated to approximately +930^oC (+1700^oF) the water vaporizes and the ore expands into glass spheroids. The expanded perlite ore may be mixed into a water slurry formulation containing cellulose fibre, a small amount of asphalt, and sometimes starch. The slurry is then dried into boards and cut to size. The top surface is usually treated to minimize bitumen absorption.

Perlitic roof insulation provides the following properties and advantages:

• Compatible with asphalt
• Compatible with most roof system components
• Resistant to thermal conductivity
• Resistant to fire
• Resistant to impact
• Resistant to thermal cycling (dimensionally stable)
• Unaffected by asphalt application temperatures
• Stable K-value
• Retains roofing nails

The possible disadvantages or precautions involved in the use of perlitic roof insulation include:

• Absorbs moisture (protect from the effects of weathering)
• Heavy equipment may compress boards causing possible debonding of the insulation from the deck
• Extremely friable (crushable); proper compounding and correct grading is important
• Relatively low thermal values.

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Manufacturer: JOHNS MANVILLE CORPORATION

Contact Address: See Membership List, Section 1

Product Group: PERLITIC ROOF INSULATION

Country of Origin: USA

Country of Manufacture: USA

DESCRIPTION

The roofing assembly / material information published in the RCABC Roofing Practices Manual does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

FESCO BOARD

Fesco Board is a homogeneous board composed of expanded perlite, a volcanic ore, blended with selected binders and fibers. The perlite particles are subjected to intense heat, which causes them to expand approximately fifteen times their original size. The resulting glass-like beads contain air cells, which provide high insulating efficiency.

The top surface of Fesco Board is sealed with Top-Loc coating to ensure positive adhesion of a built-up or modified bitumen membrane. The minimum recycled content is 25% by weight.

Fesco Board has excellent fire resistance and is approved for use in Factory Mutual approved constructions. When applied over rigid decks, Fesco Board’s high laminar tensile strength resists damage from on-the-job and maintenance traffic, offers an excellent substrate for all roofing membranes, and effectively bridges flute openings in metal decks. Because of its perlite composition and low water absorption rates, Fesco Board is dimensionally stable.

Thermal Resistance	RSI = .49 / 25 mm (R value = 2.78 / inch)
Uses	Fesco Board is a rigid, thermal roof insulation for use in built-up, modified bitumen and some single ply roofing systems. It may be applied using hot bitumen and / or mechanical fasteners. It may be used as a primary or overlayment board.
Standards	CSA Standard A284-1976
	CAN / CGSB 51.10-92
	Underwriters Laboratory Canada
Standard Sizes	0.6 m x 1.2 m (24" x 48")	1.2 m x 1.2 m (48" x 48")	1.2 m x 2.4 m (48" x 96")
	Thicknesses - 18 mm (3/4"), 25 mm (1"), 38 mm (1.5"), 50 mm (2")
Compressive Strength	CSA A284-1976 34 psi
Density:	CSA A284-1976 13 pcf

TAPERED FESCO BOARD

Tapered Fesco is supplied in .61 m x 1.22 m (24" x 48") or 1.22 m x 1.22 m (48" x 48") boards, custom cut and tapered to 5.2 mm / m (1/16" / ft.), 10.4 mm / m (1/8" / ft.), 20.8 mm / m (1/4" / ft.), or 41.6 mm / m (1/2" / ft.) slope depending on the need. Custom sizes are available. Johns Manville’s Tapered Design Center has computerized design service, as well as shop drawings for application for the architect and roofing contractor.

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9 Mineral Fibre Roof Insulation

NOTE:See also Accepted Roof Deck Insulation products by clicking on this link.

Mineral fibre roof insulations are composed of rock fibres with a thermoset resin and surfaced with glass fibre scrim on the top surface. These boards can provide a suitable surface for directly mopped bituminous membranes, however, a minimum one layer fibreboard overlay is recommended.

Mineral fibre roof insulation may provide the following properties and advantages:

• compatible with asphalt
• compatible with most roof systems
• resistant to thermal conductivity
• excellent resistance to the effects of moisture
• resistant to fire
• resistant to cell deterioration (non-corrosive)
• resistant to thermal cycling (dimensionally stable)
• stable K value (thermal conductivity does not change with age)
• conforms to substrate irregularities
• can be hot mopped or mechanically fastened

The possible disadvantages or precautions involved in the use of mineral fibre roof insulation:

• heavy equipment may compress the insulation and cause delamination of the membrane
• not intended for use under high traffic deck surfaces

Mineral fibre roof insulation should meet or exceed CAN / ULC S126.M86.

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Manufacturer: SOPREMA INC.

Contact Address: See Membership List, Section 1

Product Group: SOPRAROCK STONE WOOL ROOF INSULATION

Country of Origin: Denmark

Countryof Manufacture: Canada

DESCRIPTION

The roofing assembly / material information published in the RGC Roofing Practices Manual does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

SOPRAROCK STONE WOOL is a mono or dual density mineral wool fibre insulation made from basalt rock and slag. It is a non-combustible, has excellent fire resistant, and is an extremely dimensionally stable insulation with excellent acoustic properties. It is a water repellent yet vapour permeable insulation made from natural and recycled products, is impact resistant, and its thermal value and excellent physical properties make it an exceptional choice for use in the commercial roofing market in both new and re-roof applications as a primary insulation or an overlay insulation. Soprarock Stone wool contributes significant advantages to long term performance of roofing membrane assemblies.

SOPRAROCK MD & SOPRAROCK MD PLUS

Soprarock MD is mono-density mineral wool for use as a cover board for other insulations or over-top applications and can be mechanically fastened or hot mopped in a full bed of bitumen. Soprarock MD PLUS has an integral bitumen coating factory applied to allow for torch applied, hot applied or cold applied adhered membrane assemblies direct to the insulation.

Thickness - mm (inches) - 25 (1”)

Dimensions - m (ft.) - 1.2 x 1.2 (4’ x4’)

Long Term Thermal Resistance - Stable - ASTM C 518 (C 177) RSI Value - 0.62 (R-3.5) per 25mm (1”)

Compressive Strength - 25mm (1”) thickness - ASTM C165 - 84 kPa (12.1 psi)

Density (kg/m2) - ASTM C 612-00 - Actual - 176 (11 lb/ft3)

Dimensional Stability, linear shrinkage (% @ 177 C [350 F]) - ASTM C 356 - 0.01%

Water Absorption (%) - ASTM C 209 - < 1.0

SOPRAROCK DD & DD PLUS

Soprarock DD is dual-density mineral wool with a rigid upper surface for durability and enhanced strength. It is intended for use as a primary insulation in commercial, industrial, and institutional new and re-roof applications and can be mechanically fastened or hot mopped in a full bed of bitumen. Soprarock DD PLUS has an integral bitumen coating applied to allow for torch applied, hot applied or cold applied adhered membrane assemblies direct to the insulation without the use of a coverboard.

Thickness - mm (inches) - 25 (1”) to 150 (6”) in 12mm (1/2”) increments

Dimensions - m (ft) - .12 x 1.2 (4’ x 4’)

Long Term Thermal Resistance - Stable - ASTM C518 (C 177) - RSI Value - 0.65 (R 3.7) per 25mm (1”)

Compressive Strength - ASTM C 165

• Top Layer at 10% - kPa (psi) 139 (20.2 psi)
• Top Layer at 25% - kPa (psi) 252 (37.0 psi)
• 75mm (3”) thickness - kPs (psi) 71 (10.3 psi)
• 75mm (3”) thickness - kPa (psi) 103.5 (15psi)

Density (kg/m3) - Formed as a monolithic structure - ASTM C612-00 - Actual

• Top Layer - 220 (13.75 lb/ft3)
• Bottom - Layer - 160 (10.0 lb/ft3)

Dimensional Stability - Linear Shrinkage (% at 177C (350F) - ASTM C 356 - 0.01%

Water Absorption (%) - ASTM C 209 - < 1.0

Water Vapour Sorption - ASTM C 1104 - 0.03

Soprema Inc. may modify the composition of its products without prior notice. Consequently orders will be filled according to the latest specifications.

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Manufacturer: Roxul INC. Contact Address: See Membership List, Section 1

Product Group: TOPROCK DD STONE WOOL ROOF INSULATION

Country of Origin: Denmark

Country of Manufacture: Canada

DESCRIPTION

The roofing assembly / material information published in the RGC Roofing Practices Manual does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

TOPROCK DD STONE WOOL Insulation is a monolithic dual density stone wool fibre insulation made from basalt rock and slag. It is a non-combustible and fire resistant, is extremely dimensionally stable with excellent acoustic properties. It is water repellent yet vapour permeable and made from natural and recycled products, is impact resistant, and its thermal value and excellent physical properties make it an exceptional choice for use in the commercial roofing market in both new and re-roof applications as a primary insulation or an overlay insulation. Toprock Stone wool contributes significant advantages to long term performance of roofing membrane assemblies.

TOPROCK DD & DD PLUS

Toprock DD is dual-density mineral wool with a rigid upper surface for durability and enhanced strength. It is intended for use as a primary insulation in commercial, industrial, and institutional new and re-roof applications. It can be mechanically fastened or hot mopped in a full bed of bitumen. Toprock DD PLUS has an integral bitumen coating applied to allow for torch applied, hot applied or cold applied adhered membrane assemblies direct to the insulation without the use of a coverboard.

Thickness - mm (inches) - 25 (1”) to 150 (6”) in 12mm (1/2”) increments except no 3” (only 3.25 R 12)

Dimensions - m (ft) - 1.2 x 1.2 (4’ x 4’)

Long Term Thermal Resistance - Stable - ASTM C518 (C 177) - RSI Value - 0.65 (R 3.7) per 25mm (1”)

Compressive Strength - ASTM C 165

• Top Layer at 10% - kPa (psi) 139 (20.2 psi)
• Top Layer at 25% - kPa (psi) 252 (37.0 psi)
• 75mm (3”) thickness - kPs (psi) 71 (10.3 psi)
• 75mm (3”) thickness - kPa (psi) 103.5 (15psi)

Density (kg/m3) - Formed as a monolithic structure - ASTM C612-00 - Actual

• Top Layer - 220 (13.75 lb/ft3)
• Bottom - Layer - 160 (10.0 lb/ft3)

Dimensional Stability - Linear Shrinkage (% at 177C (350F) - ASTM C 356 - 0.01%

WaterAbsorption (%) - ASTM C 209 - < 1.0 - Water Vapour Sorption - ASTM C 1104 - 0.03

Roxul Inc. may modify the composition of its products without prior notice. Consequently orders will be filled according to the latest specifications.

10 Lightweight Insulating Concrete

NOTE:See also Accepted Roof Deck Insulation products by clicking on this link.

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Manufacturer: SIPLAST CANADA INC.

Contact Address: See Membership List, Section 1

Product Group: LIGHTWEIGHT INSULATING CONCRETE

Country of Origin: France, USA, Germany, Poland, Denmark

Year First Installed: BC: 2003

Canada: 1995

Foreign: 1935

DESCRIPTION

The roofing assembly / material information published in the RCABC Roofing Practices Manual does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

NVS and Insulcel are composite systems that combine the unique properties of Lightweight insulating concrete (LWIC) and premium expanded polystyrene (EPS) foam insulation. The polystyrene insulation board can be installed in thicknesses necessary for high insulation values and in a stair stepped fashion, facilitating a positive slope to drain.

Poured 25 mm (1") for NVS and 50 mm (2") for Insulcel thickness over EPS insulation, these LWIC systems have been engineered for use over non-slotted or slotted galvanized corrugated metal decks (Insulcel), structural concrtete substrates and, where appropriate, over existing roofs in recover applications. These systems provide high performance solutions to industry concerns that include moisture resistance, high compressive strength, dimensional stability, fire and wind resistance, stable R-values and environmental safety. As a reusable resource LWIC also provides LEED values and is re-roofable.

PRODUCTS

NVS concrete is a 1:3.5 volume ratio of Portland cement to patented NVS Concrete Aggregate.

INSULCEL concrete is a mixture of Insulcel-PB pregenerated cellular foam and Portland cement / water slurry.

Dry Density:	NVS - 560 kilograms per cubic meter (Kg/cu.m), (35 lbs. pcf) Insulcel - 480 kilograms per cubic meter (Kg/cu.m), (30 lbs. pcf)
Min. Compressive Strenght:	NVS - 2070 kilopascals (kPa), (300 psi) Insulcel - 1380 kilopascals, (kPa), (200 psi)
Uses:	Recover and existing roof system (consultant validated). Compensate for irregularities in existing substrates - slope to drain. High compressive strength reduces potential damage from foot and other traffic. Monolithic Mass effect improves long term membrane performance. LEED value. Save disposal costs and space in landfills. Temperature Restrictions - do not install below 0ºC or 32ºF. Do not apply during or in the event of rain. Improved contractor installation performance.
Standards:	Factory Mutual NVS 1-90 and 1-150 Insulcel RT 1-90 and 1-195 Metro-Dade Product Control No. 02-0411.01 and 03-320.13 ASTM C332, ASTM C578

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