Sheet Insulation

Full Building Envelope

Expanded Polystyrene (EPS) sheet insulation products can be found throughout the building envelope. EPS sheet products are utilized as a high performance cost saving alternative to extruded polystyrene (XPS) or polyisocyanurate insulation (Poly-ISO). Great White Foam brand expanded polystyrene material can be supplied in seven grades ranging from 5 psi (35 kPa) to 50 psi (345 kPa) compression resistance.

Great White Foam brand expanded polystyrene (EPS) has many advantages over other technologies including: local manufacturing, no blowing agents or CFCs, recycling initiatives, and more. To learn more about the advantages visit our EPS Advantages page.

 
 

 

Applications:

  • Below Slabs, Stoops, and Driveways

  • Insulating Foundation Walls

  • Exterior Insulation and Finishing Systems (EIFS)

  • Roofing

Profiles:

 
 
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Butt Cut (Default)

Sheet Insulation Ship Lap - Profile.jpg

Ship Lap

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Tongue and Groove

 

Material Grade

Great White Foam (GWF) brand expanded polystyrene (EPS) is available in seven material grades. Select the grade that optimizes your performance and cost savings.

GWF5 | GWF10 (Type 1) | GWF13 | GWF15 (Type 2) | GWF25 (Type 3) | GWF40 | GWF60

Material meets, exceeds, or complies with the specifications of CAN/ULC S701.1 / S102-2, and ASTM D6817/D6817M. Standard’s vary based on selected material grade. For more details please review the declaration of compliance document.

 
 

 
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Dimensions

Our most common sheet size is 4’ x 8’. Other available sizes include:

Widths:               4” | 6” | 8” | 10” | 12” | 2 ft | 3 ft | 4 ft | Custom

Lengths:              4 ft | 7 ft | 8 ft | 9 ft | 10 ft | Custom

Thickness:          Various


Try our coverage calculator below for to determine the R-Value by grade & thickness.

 
 

 Coverage Calculator