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.

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	-	-	-	-

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)
Georgia-Pacific Canada Ltd.	DensDeck^® Roofboard	6.4, 12.7, 15.9	1/4, 1/2, 5/8	6.4, 12.7, 15.9	4 x 8	3447 - 6205	500 - 900	-	0.56
Georgia-Pacific Canada Ltd.	DensDeck^® Prime with EONIC Roof Board	6.4, 12.7, 15.9	1/4, 1/2, 5/8	6.4, 12.7, 15.9	4 x 8	3447 - 6205	500 - 900	-	0.56
USG (CGC) SecureRock	Securerock Gypsum Fibre Roof Board	-	-	-	-	-	-	-	-
USG (CGC) SecureRock	Securerock Glass-Mat Roof Board	-	-	-	-	-	-	-	-

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

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