Roofs - Insulation Overlays

Division C - Accepted Materials

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Roofs: Insulation Overlays

Accepted Materials for a RoofStar Guarantee 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 is 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) for use in a roof or grade-level waterproofing system that will qualify for a RoofStar Guarantee. The acceptance of these materials by the RGC (RoofStar Guarantee Program) 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.

Asphaltic Overlays

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)	Thickness (in.)	Dimensions (mm)	Dimensions (in.)	Compressive Strength (kPa)	Compressive Strength (psi)	Thermal Resistance (RSI/25.4 mm)	Thermal Resistance (R/inch)
Hal Industries Inc.	Perma-Board	4.5	3/16	1000 x 2000	39 x 66	-	-	-	-
IKO Industries Ltd.	Protecto Board	4.5, 6.4, 12.7	3/16, 1/4, 1/2	1220 x 1520, 1220 x 2440	48 x 60, 48 x 96	-	-	-	-
IKO Industries Ltd.	Protectobase 95	4.5	3/16	-	-	-	-	-	-
IKO Industries Ltd.	Protectobase 180	4.5	3/16	915 x 2400	36 x 96	-	-	-	-
Polyglass USA, Inc.	Polyboard E	4.5, 6	3/16, 1/4	1220 x 1520	48 x 60, 48 x 96	-	-	-	-
Polyglass USA, Inc.	Polyboard W	4.5	3/16	1000 x 2000	40 x 80	-	-	-	-
Soprema Inc.	Sopraboard	4.5, 6.3	3/16, 1/4	1220 x 1520, 1220 x 2400	48 x 60, 48 x 96	-	-	-	-

Fibreglass-faced Silicon-treated Gypsum Core Overlays

All boards sized 1219.2 mm x 2438 mm (48" x 96"). 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	Board Thickness mm (in.)	Board Weight (lb/sf)	Board Comp. Strength (psi, nominal)
Georgia-Pacific Canada Ltd.	DensDeck Roofboard	6.4 (1/4)	1.100	500-900
Georgia-Pacific Canada Ltd.	DensDeck Roofboard	12.7 (1/2)	1.950	500-900
Georgia-Pacific Canada Ltd.	DensDeck Roofboard	15.9 (5/8)	2.500	500-900
Georgia-Pacific Canada Ltd.	DensDeck® Prime with EONIC Roof Board	6.4 (1/4)	1.150	900
Georgia-Pacific Canada Ltd.	DensDeck® Prime with EONIC Roof Board	12.7 (1/2)	1.975	900
Georgia-Pacific Canada Ltd.	DensDeck® Prime with EONIC Roof Board	15.9 (5/8)	2.550	900
USG (CGC) SecureRock	Securerock Glass-Mat Roof Board	6.4 (1/4)	1.200	700-1000
USG (CGC) SecureRock	Securerock Glass-Mat Roof Board	12.7 (1/2)	2.000	700-1000
USG (CGC) SecureRock	Securerock Glass-Mat Roof Board	15.9 (5/8)	2.700	700-1000
USG (CGC) SecureRock	Securerock Gypsum Fibre Roof Board	6.4 (1/4)	1.570	1800
USG (CGC) SecureRock	Securerock Gypsum Fibre Roof Board	9.5 (3/8)	1.960	1800
USG (CGC) SecureRock	Securerock Gypsum Fibre Roof Board	12.7 (1/2)	2.760	1800
USG (CGC) SecureRock	Securerock Gypsum Fibre Roof Board	15.9 (5/8)	3.200	1800
USG (CGC) SecureRock	Securerock Coated Ultralight Glass Mat Roof Board*	6.4 (1/4)	1.200	700-1000
USG (CGC) SecureRock	Securerock Coated Ultralight Glass Mat Roof Board*	12.7 (1/2)	1.700	700-1000
USG (CGC) SecureRock	Securerock Coated Ultralight Glass Mat Roof Board*	15.9 (5/8)	2.200	700-1000
USG (CGC) SecureRock	Securerock Ultralight Glass Mat Roof Board	6.4 (1/4)	1.200	700-1000
USG (CGC) SecureRock	Securerock Ultralight Glass Mat Roof Board	12.7 (1/2)	1.700	700-1000
USG (CGC) SecureRock	Securerock Ultralight Glass Mat Roof Board	15.9 (5/8)	2.200	700-1000

^* Indicates conditions of acceptance. See the product page for more information.

High-density Insulation Overlays

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)	Thickness (in.)	Dimensions (mm)	Dimensions (in.)	Compressive Strength (kPa)	Compressive Strength (psi)	Thermal Resistance (RSI/25.4 mm)	Thermal Resistance (R/inch)
Carlisle Syntec Systems Canada	SecurShield HD Plus	12.5	1/2	1220 x 2440	48 x 96	690	100	-	2.5
Elevate (fomerly Firestone)	ISOGARD HD (Grade 1, 2)	12.5	1/2	1220 x 1220, 1220 x 2440	48 x 48, 48 x 96	≥ 551, ≥ 827	≥ 80, ≥ 120	0.44	2.5
Hunter Panels	H-Shield HD	12.5	1/2	1220 x 2440	48 x 96	620	90	0.44	2.5
IKO Industries Ltd.	IKOTherm Covershield	12.5	1/2	1220 x 2440	48 x 96	620	90	0.44	2.5
Johns Manville Corporation	Retrofit Board	12.5	1/2	610 x 1220, 1220 x 1220, 1220 x 2440	24 x 48, 48 x 48, 48 x 96	255	37	0.46	2.64
Johns Manville Corporation	Invinsa Roof Board	6.3	1/4	1220 x 1220, 1220 x 2440	48 x 48, 48 x 96	1034	150	-	1
Siplast, Inc.	Paratherm HD	12.5	1/2	1220 x 1220, 1220 x 2440	48 x 48, 48 x 96	552	80	0.44	2.5
Siplast, Inc.	Paratherm W HD	12.5	1/2	1220 x 1220, 1220 x 2440	48 x 48, 48 x 96	552	80	0.44	2.5
Soprema Inc.	Sopra-Iso Plus HD	12.5	1/2	1220 x 1220, 1220 x 2440	48 x 48, 48 x 96	689	100	0.44	2.5

Membrane-laminated Overlays

Click on a manufacturer's name to see the full list of their products accepted for use in the RoofStar Guarantee Program
N/P = Not Published

Manufacturer	Product Name	Thickness (mm)	Thickness (in.)	Dimensions (mm)	Dimensions (in.)	Compressive Strength (kPa)	Compressive Strength (psi)	Thermal Resistance (RSI/25.4 mm)	Thermal Resistance (R/inch)
IKO Industries Ltd.	Protectobase 180	12.4	0.49	914 x 2440	36 x 96	N/P	N/P	N/P	N/P
IKO Industries Ltd.	Protectobase 95	12.4	0.49	914 x 2440	36 x 96	N/P	N/P	N/P	N/P
IKO Industries Ltd.	ShieldBase 180	14.7	0.58	914 x 2440	36 x 96	N/P	N/P	N/P	N/P
Soprema Inc.	2-1 SopraSmart Rock	27.6, 40.3	1.09, 1.59	914 x 4880	36 x 192	85, 190 (10, 25%)	12, 28 (10, 25%)	0.7	4
Soprema Inc.	3-1 SopraSmart Rock	78.2	3-3/32	914 x 2440	36 x 96	75	11	0.7	4
Soprema Inc.	2-1 SopraSmart Board	5.4, 7.0	7/32, 9/32	914 x 2440	36 x 96	N/P	N/P	N/P	N/P
Soprema Inc.	2-1 SopraSmart Board ISO HD	14.9	0.6	914 x 2440, 914 x 4880	36 x 96, 36 x 192	550 - 759	80 - 110	0.44	2.5
Soprema Inc.	2-1 SopraSmart ISO HD HP Sanded	15.2	0.6	914 x 2440	36 x 96	550 - 759	80 - 110	0.44	2.5

Mineral Fibre Overlays

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)	Thickness (in.)	Dimensions (mm)	Dimensions (in.)	Compressive Strength (kPa)	Compressive Strength (psi)	Thermal Resistance (RSI/25.4 mm)	Thermal Resistance (R/inch)
Soprema Inc.	Soprarock MD	25	1	1220 x 1220	48 x 48	84	12.1	0.62	3.5
Soprema Inc.	Soprarock MD Plus	25	1	1220 x 1220	48 x 48	84	12.1	0.62	3.5

Fibreboard and Membrane-laminated Fibreboard Overlays

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)	Thickness (in.)	Dimensions (mm)	Dimensions (in.)	Compressive Strength (kPa)	Compressive Strength (psi)	Thermal Resistance (RSI/25.4 mm)	Thermal Resistance (R/inch)
IKO Industries Ltd.	Asphalt Fibreboard	‒	-	-	-	-	-	‒	‒
MSL	Securtorch	12.5	1/2	1220 x 1220	48 x 48	-	-	0.27	1.5
MSL	Asphalt Coated (6 sides)	‒	-	-	-	-	-	‒	‒
MSL	Asphalt and Wax Impregnated Fibreboard	‒	-	-	-	-	-	‒	‒
MSL	Asphalt and Wax Impregnated HD	‒	-	-	-	-	-	‒	‒
MSL	Securpan (asphalt coated)	‒	-	-	-	-	-	‒	‒
Posi-Slope Western	MF (Protect Board Composite)	‒	-	600 x 1200, 900 x 1200	24 x 48, 36 x 48	-	-	4	‒
Roofmart Pacific Ltd.	Roofcraft 95 Base FR	14	9/16	900 x 2600	36 x 102	-	-	0.55	3.1
Roofmart Pacific Ltd.	Roofcraft 180 Base FR	14	9/16	902 x 2600	36 x 102	-	-	0.55	3.1
Soprema Inc.	2-1 SopraSmart FB	‒	-	910 x 2440	36 x 96	235	34	0.53	3

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