Difference between revisions of "Accepted Materials - Grade-level Waterproofing"

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Difference between revisions of "Accepted Materials - Grade-level Waterproofing"

 
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===Vapour Retarders===
 
===Vapour Retarders===
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===Deck Overlay Boards===
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:The RCABC does not specify ''Vapour Retarders'', as they are not included in the '''''RoofStar Guarantee Program'''''. See manufacturer specifications where ''Vapour Retarders'' are required, and refer to proprietary products and installation instructions. This cross-reference is listed for information only.
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===Insulation===
 
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===Insulation Overlay Boards===
 
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===Insulation Joint Tape===
 
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===Membranes===
 
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===='''SBS Modified Bitumen Membranes'''====
 
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SBS (Styrene Butadiene Styrene) Modified Bituminous sheet waterproofing is prefabricated elastomeric membranes that are reinforced with mats consisting of polyester, fibreglass or a combination of both reinforcement types. SBS modified bituminous membranes are available in varied thicknesses with specific physical properties to satisfy the demands of particual waterproofing conditions as well as surface finishes that facilitate various application methods.
 
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'''Composition'''
 
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Bituminous and modified bituminous flexible membrane systems are composite sheet membranes which are thermoplastic in nature but display variable elastomeric properties when modified. These sheets generally consist of bitumen (oxidized or modified), reinforcement, and surfacing materials. The performance of these membranes may be compromised by subtle, seemingly inconsequential changes in composition.
 
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The formulation of the bitumen is critical, particularly when its physical properties are modified by the addition of polymers. Bitumen is most commonly modified with styrene butadiene styrene (SBS). The manufacturer must ensure that a suitable degree of compatibility exists between the bitumen and the polymer and that a thorough mix has been obtained. The careful selection and combination of bitumen and polymer (the type of modifier, the percentage of polymer used, etc.) determines the physical properties and long term performance of the modified bituminous "binder". The binder provides the membrane with its waterproofing capability and may impart the following properties:
 
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* low temperature flexibility
 
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* elasticity
 
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* high temperature resistance to flow
 
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* resistance to aging
 
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The bitumen utilized for oxidized bituminous membranes has been "blown", similar to roofing asphalt. This produces a higher softening point and, therefore, a more useful temperature range.
 
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The physical properties of the binder are further enhanced by the imposition by saturation or coating onto a carrier or reinforcing mat, most commonly a textile such as:
 
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* non-woven spun-bonded polyester
 
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* woven polyester scrim
 
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* fibreglass mats
 
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* woven fibreglass cloth
 
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* combinations of the above.
 
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===='''Thermoset Membranes'''====
 
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Thermoset is defined as a material that solidifies or "sets" irreversibly when heated (vulcanized). This property is usually associated with cross-linking of the molecules induced by heat or radiation. Once the material is cured, it can only be bonded to itself by adhesives; new molecular linkages cannot form. Some thermosets are not cured during manufacture (ie. Butyl flashings) and are intended to cure over time after they have been installed. This allows the material to cure into the specific shape required for waterproofing application details.
 
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'''Composition'''
 
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The generic membrane types defined as cured thermosets in the RoofStar Guarantee Program for Waterproofing currently include Butyl Membranes (Isobutylene and Isoprene):
 
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:Butyl (Isobutylene - Isoprene) membrane is a thermoset vulcanized elastomer synthetic rubber membrane formulated from isobutylene and Isoprene. Although most commonly available as a cured sheet, butyl can be formulated as an uncured membrane for specific purposes (i.e., flashings).
 
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:Butyl membrane waterproofing systems are single-ply membranes in 1.5 mm (0.060") and greater thicknesses and are usually black in colour. The membrane is applied fully-adhered and seams are joined with contact splicing cement or seaming tape (or a combination of both), and are caulked (see manufacturer's requirements).
 
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:Butyl membranes should conform to CGSB 37-GP-52M 1984, "Roofing and Waterproofing Membrane, Sheet Applied, Elastomeric" which lists two Classes of Type 2 reinforced membranes (classed according to their end-use), according to manufacture:
 
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:* Class A - exposed
 
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:* Class B - non-exposed
 
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This standard covers requirements such as "thickness, tensile strength, breaking strength, lap joint strength, elongation, tensile set, low temperature flexibility, water absorption, dimensional stability after water absorption, heat aging, ozone resistance, resistance to accelerated weathering, dynamic impact test, tear resistance, and tearing strength."
 
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===='''Thermoplastic Membranes'''====
 
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Thermoplastic materials are defined as polymers which soften when heated and harden when cooled. This process is repetitive provided the material is not heated above the point at which decomposition occurs. No cross-linking or vulcanization occurs. In addition to heat welding, some materials can be solvent welded. These welds develop bonding strengths equalling or surpassing the strength of the base materials. Thermoplastic membrane systems that comply RGC Guarantee Standards, are installed as fully adhered protected waterproofing assembly, qualify for coverage under the <i>RoofStar Guarantee Program. </i>
 
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'''Composition'''
 
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Thermoplastic materials used for waterproofing decks on plazas, promenades and terraces<b> in</b> the RoofStar Guarantee Program include only PVC (Polyvinyl Chloride) Membranes:
 
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:PVC is a thermoplastic material produced through the polymerization of vinyl chloride, resulting in a relatively hard, resinous material. This material is then formulated with compounds, such as plasticizers and stabilizers, depending on the physical properties required for end use. PVC formulations have been developed to suit numerous commercial and industrial applications.
 
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:PVC waterproofing systems are single-ply membranes reinforced with polyester fabric or glass fibres, and in thicknesses usually ranging from 1.2 mm to 2.0 mm, depending on the manufacturer. The membrane is fully adhered and Seams are heat or chemically welded (see manufacturer's requirements).
 
  
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:PVC membrane should conform to CGSB 37-GP-54M 1979, "Roofing and Waterproofing Membrane, Sheet Applied, Flexible, Polyvinyl Chloride" which lists two types of membrane, according to manufacture:
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===[http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_Waterproofing#WPDECK Deck Overlay Boards]===
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:* Type 2 - reinforced
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:Two layers of gypsum board shall be installed over steel decks as an acceptable substrate for adhered waterproofing membranes when cast in place concrete topping is not present. The first layer of gypsum or cement board shall be either be fully mechanically fastened to the deck or adhered to the deck with manufacturer's approved compatible polyurethane adhesive. The second board layer must be adhered with a compatible manufacturer's approved polyurethane adhesive.
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:and four classes, according to end use:
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<div class="toccolours mw-collapsible mw-collapsed">
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:* Class A - non-exposed roofing
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:See the list below for materials acceptable for application on steel decks when specifying a RoofStar Waterproofing Guarantee.  Note that only overlay boards measuring 12.7 mm (1/2") or more in thickness are acceptable for use in a '''''RoofStar Waterproofing Guarantee'''''.  For more on this, see [[RoofStar Guarantee Standards for Waterproofing#WPDECKOVERLAY|'''Gypsum Boards on Steel Decks''']] under the [[RoofStar Guarantee Standards for Waterproofing|'''RoofStar Guarantee Standards for Waterproofing''']]:
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:* Class B - exposed roofing
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<div class="mw-collapsible-content">{{Materials - Deck Overlay Boards}}</div>
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:* Class C - waterproofing
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</div>
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:* Class D - flashing membrane asphalt compatible
 
  
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This standard covers requirements such as "thickness, lap joint strength, permeability, tensile strength, elongation at break, low temperature flexibility, water absorption, resistance to accelerated weathering, dimensional change after stress relaxation, and cone penetration"
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===[http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_Waterproofing#WPMEMBRANE Membrane Systems]===
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:RGC specifically accepted waterproofing membrane systems listed in the Accepted Materials of this Manual include the following:
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:* Two Ply SBS Modified Bituminous Membrane Systems
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:* Butyl Elastomeric Single Ply Membrane Systems ('''NOTE''': Currently, there are no butyl membranes accepted for use in the '''''RoofStar Guarantee Program''''')
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:* Poly Vinyl Chloride (PVC) Plastomeric Single Ply Membrane Systems
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:* Hot Fluid - Applied, Rubberized Asphalt Systems.
  
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PVC membranes should be applied in conformance with CGSB 37-GP-55M 1979, "Application of Sheet Applied Flexible Polyvinyl Chloride Roof Membrane" and the membrane manufacturer's printed instructions.
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:Only waterproofing membrane systems that are fully adhered and have an accepted protection layer installed above the membrane (protected) qualifies for coverage under the '''RoofStar Guarantee Program'''.
  
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===='''Hot Fluid-Applied, Rubberized Asphalt Membrane'''====
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:All waterproofing system accessory components <b>must</b> be supplied or be accepted for use by the membrane manufacturer.
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These are fully adhered waterproofing system that utilize hot applied rubberized asphalt compounds, with reinforcement scrims, to form monolithic (seamless) flexible waterproofing membranes.
 
  
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'''Composition'''
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<div class="toccolours mw-collapsible mw-collapsed">
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:<big><big>Modified Bituminous (SBS) Membrane Systems</big></big>
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<div class="mw-collapsible-content">{{Template:Materials - Waterproofing Membranes (SBS)}}</div>
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</div>
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<div class="toccolours mw-collapsible mw-collapsed">
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:<big><big>Thermoset (PVC) Membrane Systems</big></big>
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<div class="mw-collapsible-content">{{Template:Materials - Waterproofing Membranes (PVC)}}</div>
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</div>
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<div class="toccolours mw-collapsible mw-collapsed">
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:<big><big>Hot Fluid-Applied, Rubberized Asphalt Membrane Systems</big></big>
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<div class="mw-collapsible-content">{{Template:Materials - Waterproofing Membranes (Hot-applied Rubberized Asphalt)}}</div>
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</div>
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<div class="toccolours mw-collapsible mw-collapsed">
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:<big><big>Liquid Membrane Systems</big></big>
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<div class="mw-collapsible-content">{{Template:Materials - Liquid Membrane Systems (Field)}}</div>
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</div>
  
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:Single component rubberized asphalt compound installed with reinforcement between two a two layer system. Hot applied rubberized asphalt is fully- adhered to both vertical and horizontal structural surfaces to form monolithic (seamless) flexible waterproofing membrane. Reinforced membrane flashings are installed in Hot applied rubberized asphalt at all deck transitions (wall to deck etc.).
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===[http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_Waterproofing#WPPROTECTION Membrane Protection Boards]===
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<div class="toccolours mw-collapsible mw-collapsed">
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:A RoofStar-accepted membrane protection layer (asphalt core board, cap sheet or protection mat), <u>must</u> be installed by the waterproofing contractor, and be compatible with waterproofing membrane. The protection layer shall be installed and secured, as soon as possible, upon completion of waterproofing membrane installation. Construction traffic, by other than waterproofing trade and membrane moisture monitor technicians, is not permitted until the membrane protection layer is completely installed and secured.
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<div class="mw-collapsible-content">{{Materials - Insulation Overlay (Asphaltic Board)}}</div>
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</div>
  
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:Hot applied rubberized asphalt systems are used for waterproofing on the following applications:
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===[http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_Waterproofing#WPINSULATION Insulation]===
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<div class="toccolours mw-collapsible mw-collapsed">
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:Extruded expanded polystyrene (Type 4), conforming to CAN/ULC-S701 (latest edition) with a compressive strength of 240 kPa (35psi) is the only commercially produced insulation suitable for use over waterproofing and protected membrane roofing systems. Extruded expanded polystyrene is available in a 600mm x 1200mm (2'x4') board size, has an aged R value of 5.0 per inch (RSI 0.87) and ranges in thickness' from 25mm (1") to 100mm (4").
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<div class="mw-collapsible-content">{{Materials - Insulation (XPS)}}</div>
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</div>
  
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:* Waterproofing in an Inverted Assembly
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===[http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_Waterproofing#WPLEAK Membrane Moisture Surveys & Monitoring Sensor Grids]===
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<div class="toccolours mw-collapsible mw-collapsed">
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:A membrane moisture scan survey and report that confirms the water tight integrity of waterproofing systems is a '''mandatory''' requirement of the RoofStar Guarantee Program for all waterproofing systems, prior to installation of overburdens or wearing courses. Membrane moisture survey scans must be performed by an independent moisture detection company, whose moisture detection system has been reviewed by the RCABC Technical Committee and deemed to be suitable for inclusion in the RoofStar Guarantee Program (Waterproofing). In addition, moisture monitoring sensor grids (conductance scanning grid) are <b>mandatory</b> and shall be installed on the top surface of all waterproofing membrane systems designed with inaccessible overburdens and wearing courses. The exceptions that do not require moisture monitoring sensor grids are pavers on pedestals and gravel ballast to a maximum 100mm (4") thick . Moisture monitoring sensor grids<b> shall </b>be installed prior to installation of overburdens or wearing courses and may be placed over protection boards or SBS membranes that have been set in hot fluid-applied modified asphalt.
  
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:* Split Slab Construction for Plaza Decks
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:'''Note''':
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:Flood Testing is <b>not a recommended practice</b> but is at the discretion of the design authority or owner. If flood testing is required to water test waterproofing membranes, testing shall be conducted prior to installation of insulation and overburdens and be performed to ASTM D5957 - 98.
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<div class="mw-collapsible-content">{{Template:Materials - Leak Detection & Monitoring Systems}}</div>
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</div>
  
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:* Terraces, Prominades &amp; Planters
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<div class="toccolours mw-collapsible mw-collapsed">
  
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===Fasteners===
 
 
===Accessories===
 
===Accessories===
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<div class="mw-collapsible-content">{{Materials - Accessories}}</div>
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</div>
  
  
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[[Materials by Product Type |<i class="fa fa-chevron-circle-left" ></i> ''Accepted Materials'']]
 
[[Materials by Product Type |<i class="fa fa-chevron-circle-left" ></i> ''Accepted Materials'']]
  
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[[Waterproofing Application|<i class="fa fa-chevron-circle-right fa" ></i> ''Application'']]
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[[Waterproofing Special Applications|<i class="fa fa-chevron-circle-right fa" ></i> ''Special Applications'']]

Latest revision as of 20:34, 26 July 2021


To view materials in any section listed below, click on the EXPAND button located at the right hand side of this page

1 Vapour Retarders

The RCABC does not specify Vapour Retarders, as they are not included in the RoofStar Guarantee Program. See manufacturer specifications where Vapour Retarders are required, and refer to proprietary products and installation instructions. This cross-reference is listed for information only.

2 Deck Overlay Boards

Two layers of gypsum board shall be installed over steel decks as an acceptable substrate for adhered waterproofing membranes when cast in place concrete topping is not present. The first layer of gypsum or cement board shall be either be fully mechanically fastened to the deck or adhered to the deck with manufacturer's approved compatible polyurethane adhesive. The second board layer must be adhered with a compatible manufacturer's approved polyurethane adhesive.
Expand
See the list below for materials acceptable for application on steel decks when specifying a RoofStar Waterproofing Guarantee. Note that only overlay boards measuring 12.7 mm (1/2") or more in thickness are acceptable for use in a RoofStar Waterproofing Guarantee. For more on this, see Gypsum Boards on Steel Decks under the RoofStar Guarantee Standards for Waterproofing:

3 Membrane Systems

RGC specifically accepted waterproofing membrane systems listed in the Accepted Materials of this Manual include the following:
  • Two Ply SBS Modified Bituminous Membrane Systems
  • Butyl Elastomeric Single Ply Membrane Systems (NOTE: Currently, there are no butyl membranes accepted for use in the RoofStar Guarantee Program)
  • Poly Vinyl Chloride (PVC) Plastomeric Single Ply Membrane Systems
  • Hot Fluid - Applied, Rubberized Asphalt Systems.
Only waterproofing membrane systems that are fully adhered and have an accepted protection layer installed above the membrane (protected) qualifies for coverage under the RoofStar Guarantee Program.
All waterproofing system accessory components must be supplied or be accepted for use by the membrane manufacturer.
Expand
Modified Bituminous (SBS) Membrane Systems
Expand
Thermoset (PVC) Membrane Systems
Expand
Hot Fluid-Applied, Rubberized Asphalt Membrane Systems
Expand
Liquid Membrane Systems

4 Membrane Protection Boards

Expand
A RoofStar-accepted membrane protection layer (asphalt core board, cap sheet or protection mat), must be installed by the waterproofing contractor, and be compatible with waterproofing membrane. The protection layer shall be installed and secured, as soon as possible, upon completion of waterproofing membrane installation. Construction traffic, by other than waterproofing trade and membrane moisture monitor technicians, is not permitted until the membrane protection layer is completely installed and secured.

5 Insulation

Expand
Extruded expanded polystyrene (Type 4), conforming to CAN/ULC-S701 (latest edition) with a compressive strength of 240 kPa (35psi) is the only commercially produced insulation suitable for use over waterproofing and protected membrane roofing systems. Extruded expanded polystyrene is available in a 600mm x 1200mm (2'x4') board size, has an aged R value of 5.0 per inch (RSI 0.87) and ranges in thickness' from 25mm (1") to 100mm (4").

6 Membrane Moisture Surveys & Monitoring Sensor Grids

Expand
A membrane moisture scan survey and report that confirms the water tight integrity of waterproofing systems is a mandatory requirement of the RoofStar Guarantee Program for all waterproofing systems, prior to installation of overburdens or wearing courses. Membrane moisture survey scans must be performed by an independent moisture detection company, whose moisture detection system has been reviewed by the RCABC Technical Committee and deemed to be suitable for inclusion in the RoofStar Guarantee Program (Waterproofing). In addition, moisture monitoring sensor grids (conductance scanning grid) are mandatory and shall be installed on the top surface of all waterproofing membrane systems designed with inaccessible overburdens and wearing courses. The exceptions that do not require moisture monitoring sensor grids are pavers on pedestals and gravel ballast to a maximum 100mm (4") thick . Moisture monitoring sensor grids shall be installed prior to installation of overburdens or wearing courses and may be placed over protection boards or SBS membranes that have been set in hot fluid-applied modified asphalt.
Note:
Flood Testing is not a recommended practice but is at the discretion of the design authority or owner. If flood testing is required to water test waterproofing membranes, testing shall be conducted prior to installation of insulation and overburdens and be performed to ASTM D5957 - 98.
Expand

7 Accessories



Waterproofing Plazas, Promenades and Terraces

Accepted Materials

Special Applications

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