Insulation Overlays

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Insulation Overlays

(Redirected from Insulation Overlay Board)
ACCEPTED PRODUCTS AND SYSTEMS FOR ROOFSTAR FIVE (5) YEAR, ROOFSTAR TEN (10) YEAR, AND ROOFSTAR FIVE (5) YEAR WATERPROOFING GUARANTEES.

The tables and products shown below provide basic material data and links to more information about the materials, including manufacturers' published Technical Data sheets, but this information not intended for use as a comparison of material performance or quality. It is the sole responsibility of the design authority to assess the performance capability and material suitability for specific design requirements.

The materials listed are those which have been accepted by the RoofStar Guarantee Program (RCABC Guarantee Corp., or RGC) upon application by the manufacturer/supplier, in compliance with RGC Policy A-041, and are materials for which RoofStar Guarantee Certificates are available. The acceptance of these materials in no way reflects on the quality or performance of other materials not listed.

The materials and guideline specifications are listed under the name of the manufacturer and/or supplier of the primary membrane material, with the exception of BUR membranes for which the reader will find RoofStar Guarantee Program guidelines on traditional built-up roofing systems (BUR) incorporating organic and glass felt primary membranes.

Insulation overlays are used to separate the roof membrane from the primary insulation, usually for one of two reasons:

  • to prevent the insulation from affecting the performance of the roof membrane
  • to prevent the roof membrane and / or the method of application from affecting the insulation

The insulation can affect the performance of the roof membrane in the following ways:

  • the insulation may be incompatible with the membrane, resulting in a loss of physical properties
  • different coefficients of thermal expansion may result in membrane splits / cracks.

The roof membrane and / or the method of application can affect the insulation in the following ways:

  • the insulation may not be capable of withstanding asphalt application temperatures and may “burn-out”
  • some insulations will not accommodate direct torch-applied membranes
  • insulations that are too “soft” may result in delamination or damage to the membrane or insulation when exposed to heavy loads or traffic
  • the solvents and adhesives used for flexible membranes may adversely affect the insulation.


NOTE: All hot asphalt-adhered asphaltic membranes (built-up roofing, modified bitumen, etc.) require an insulation overlay over heat sensitive insulations and heat insensitive foamed insulation. RoofStar Guarantee Standards for heat sensitive insulation require a two-layer overlay board for a five (5) or ten (10) year RoofStar Guarantee. The RoofStar Guarantee Standards require the use of a two-layer overlay board over heat sensitive insulation in all cases, and also requires a single-layer overlay board application over heat insensitive insulation for all hot asphalt-adhered membranes. For single-ply, non-asphaltic membrane roofing systems, the membrane manufacturer should be consulted for proprietary options.

Fibreboard

Click on a manufacturer's name to see the full list of their products accepted for use in the RoofStar Guarantee Program
Manufacturer Product Name Description Thickness - mm (in.) Applicable Standard
Building Products of Canada Corp. Petroleum Paraffin Impregnated/Coated CAN / ULC - S706-02
IKO Industries Ltd. Asphalt Fibreboard Impregnated/Coated CAN / ULC - S706-02
MSL Asphalt Coated (6 sides) Asphalt Coated - 6 sides (Natural Fibreboard) CAN / ULC - S706-02
MSL Asphalt and Wax Impregnated Fibreboard Asphalt and Wax-impregnated CAN / ULC - S706-02
MSL Asphalt and Wax Impregnated HD Asphalt and Wax-impregnated HD CAN / ULC - S706-02
MSL Securpan (asphalt coated) Asphalt-coated on 1 side / fire-resistant CAN / ULC - S706-02

Asphaltic Overlay Boards

Click on a manufacturer's name to see the full list of their products accepted for use in the RoofStar Guarantee Program
Manufacturer Product Name Thickness - mm (in.) Dimensions - m (ft) Tensile Strength (kN) Tensile Strength (lbf/in) Thermal Resistance (RSI/25.4 mm) Thermal Resistance (R/inch) Type
Hal Industries Inc. Perma-Board 4.5 (3/16) 1 x 2 (3.3 x 6.6) 59 135 N/A N/A Asphaltic Overlay
IKO Industries Ltd. Protecto Board 4.5, 6.4, 12.7 (3/16, 1/4, 1/2) 1.22 x 1.52, 1.22 x 2.44 (4 x 5, 4 x 8) Not available Not available N/A N/A Asphaltic Overlay
IKO Industries Ltd. Protectobase 95 4.5 (3/16) TBA 12 69 N/A N/A Asphaltic Overlay
IKO Industries Ltd. Protectobase 180 4.5 (3/16) 0.915 x 2.4 (3 x 8) 16 91 N/A N/A Asphaltic Overlay
Roofmart Pacific Ltd. Roofcraft 95 Base FR 14 (9/16) 0.9 x 2.6 (3 x 8.5) Not available Not available 0.55 3.1 Asphaltic/Fibreboard Overlay
Roofmart Pacific Ltd. Roofcraft 180 Base FR 14 (9/16) 0.9 x 2.6 (3 x 8.5) Not available Not available 0.55 3.1 Asphaltic/Fibreboard Overlay
Soprema Inc. Sopraboard 4.5, 6.3 (3/16, 1/4) 1.2 x 1.5, 1.2 x 2.4 (4 x 5, 4 x 8) 50 78 N/A N/A Asphaltic Overlay

Composite Overlay Boards

Click on a manufacturer's name to see the full list of their products accepted for use in the RoofStar Guarantee Program. NOTE: materials linked to Tested Assembly tables may be displayed separately or located only in Tested Assembly reports. This table is currently under further revision.
Manufacturer Product Name System Test Type (Wind) Thickness - mm (in.) Dimensions - m (ft) Compressive Strength (kPa) Compressive Strength (psi) Thermal Resistance (RSI/25.4 mm) Thermal Resistance (R/inch) Type
Carlisle Syntec Systems Canada SecurShield HD Plus MARS 12.7 (1/2) 1.22 x 2.44 (4 x 8) 690 100 TBA 2.5 High-density polyisocyanurate insulation cover board
Firestone Building Products ISOGARD HD MARS PARS AARS 12.7 (1/2) TBA TBA TBA Polyisocyanurate Composite
Georgia-Pacific Canada Ltd. DensDeck Roofguard MARS AARS 6.4, 12.7, 15.9 (1/4, 1/2, 5/8) 1.22 x 2.44 (4 x 8) 3447 - 6205 500 - 900 TBA 0.56 Gypsum
Georgia-Pacific Canada Ltd. DensDeck Prime Roof Guard MARS PARS AARS 6.4, 12.7, 15.9 (1/4, 1/2, 5/8) 1.22 x 2.44 (4 x 8) 3447 - 6205 500 - 900 TBA 0.56 Gypsum with primer
IKO Industries Ltd. ShieldBase 180 14.7 (37/64) 0.94 x 2.44 (3x8) 620 90 0.44 2.5 Laminated Cover Board
IKO Industries Ltd. IKOTherm Covershield 12.7 (1/2) 1.22 x 2.44 (4x8) 620 90 0.44 2.5 High-compressive strength polyisocyanurate
Johns Manville Corporation Retrofit Board 13 (1/2) 0.61 x 1.22, 1.22 x 1.22, 1.22 x 2.44 (2x4, 4x4, 4x8) 255 37 0.46 2.64 Perlitic Roof Board
Johns Manville Corporation Invinsa Roof Board 6.4 (1/4) 1.22 x 1.22, 1.22 x 2.44 (4x4, 4x8) 1034 150 TBA 1 High-density polyisocyanurate/mineral composite
MSL Securtorch 12.5 (1/2) 1.22 x 1.22 (4 x 4) 310 - 556 45 - 80 0.54 1.5 Asphalt Coated one-side, Fire Resistant Fibreboard
Posi-Slope Western MF (Protect Board Composite) 0.60 x 1.2, 0.90 x 1.2 (2 x 4, 3 x 4) 0.7 4 Mineral Fibre/Asphaltic Composite
Roxul, Inc. MONOBOARD® 25.4 (1) nom. 1.2 x 1.2 (4 x 4) 75 - 190 11 - 28 0.66 - .077 3.7 - 4.4 Mineral Wool/Asphaltic Composite
Roxul, Inc. MONOBOARD® PLUS 25.4 (1) nom. 1.2 x 1.2 (4 x 4) 75 - 190 11 - 28 0.66 - .077 3.7 - 4.4 Mineral Wool/Asphaltic Composite
Soprema Inc. Xpress Board HD MARS 12 - 125 (1/2 - 5) 0.91 x 2.44, 0.91 x 4.88 (3 x 8, 3 x 16) TBA 4 Mineral Wool/Asphaltic Composite
Soprema Inc. Xpress ISO MARS up to 114 (4 1/2) 1 x 2.4, 1 x 4.9 (3.3 x 8, 3.3 x 16) 14 TBA 4 Polyiso/Asphaltic Composite
Soprema Inc. Soprarock MD 26.5 (1.04) 1.2 x 1.2 (4 x 4) 83 - 150 12 - 21.5 0.68 3.9 Mineral Wool
Soprema Inc. Soprarock MD Plus 26.5 (1.04) 1.2 x 1.2 (4 x 4) 85 - 190 12 - 28.0 0.7 4 Mineral Wool/Bitumen
Soprema Inc. Soprasmart Board 180 MARS 7 (9/32) 0.91 x 2.44 (3 x 8) High-density composite panel
Soprema Inc. Soprasmart ISO HD 180 MARS 15 (19/32) 0.91 x 2.44 (3 x 8) 689 100 2.5 High-density polyisocyanurate composite panel
Soprema Inc. Soprabase HD MARS 15 (19/32) 0.91 x 2.44 (3 x 8) 235 34 0.53 3 High-density FR fibreboard/SBS modified bitumen base
USG (CGC) SecureRock SecurerockGypsum Fibre Roof Board AARS TBA TBA Gypsum Fibre composite
USG (CGC) SecureRock Securerock Glass-Mat Roof Board TBA TBA Gypsum Fibre composite


Accepted Materials


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