Roofing Packages

Polystyrene Roofing

EPS Molders Inc. manufactures sloped roofing packages to the Alberta Roofing Contractors Association (ARCA) standards. Expanded Polystyrene (EPS) roofing solutions are available for built-up roof (BUR) membrane roofing; S.B.S-modified bitumen roofing; and single-ply membrane type roofing.

With each quote submittal we provide an industry standard slope drawing. Click here for free estimate.

 
 
 
 

Advantages:

Great White Foam (EPS) is a high performance insulation material with many benefits over Polyisocyanurate insulation products.

  • Long-Term Consistent Thermal Performance

  • Dimensional Stability

  • Moisture Resistance

  • Lower cost per R-value

  • Compression Strength

  • Lightweight

  • No CFCs or HCFCs

  • No blowing agents

  • Locally Manufactured

Profiles:

 
 
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Slopes

Roofing Backslope

Backslopes

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Valleys

Roofing Hips

Hips

Roofing Kick Cricket

Crickets & Kicks

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Flats

 

 Approved Fastening Systems

The Canadian Government provides online tools for selecting the correct fastening systems based on wind uplift forces and applicable standards.

In 2015 CSA A123.21 was incorporated into the National Building Code of Canada. CSA A123.21 provides the standard test method for the dynamic wind uplift resistance of membrane-roofing systems.


Systems:

Great White Foam has completed testing on the following systems:

  • Mechanical Attached Roofing System (MARS)

  • Adhesive Applied Roofing System (AARS)

To receive a copy of the summary document for Great White Foam please click here to contact us.

Coming Soon: Partially Attached Roofing Systems (PARS)

 
 

Resources:

  • CSA A123.21:20 : Standard Test Method for the Dynamic Wind Uplift Resistance of Membrane-Roofing Systems - CSAgroup.org

  • Wind-Roof Calculator - National Research Council of Canada - nrc-cnrc.gc.ca

Material Grade

Roofing packages are available in several grades of expanded polystyrene. Type 1 (GWF10) is commonly used for the flats base layer. Type 2 (GWF15) is used for flats, and tapered insulation. Type 3 HD (GWF40) is commonly used for flats, tapered insulation, under decks, and high traffic areas. Additional grades are available upon request. The compression strength of EPS grades range from 10 psi to 50 psi.

 

Downloads

  • EPS Roofing Bulletin - EPS Industry Organization - Download

 
 

Dimensions & Packaging

Bundles are supplied wrapped in UV resistant bags.

  • Sheets - 4’ x 8’ sheets in varying thicknesses. Shipped in bundles 3’ x 4’ x 8’.

  • Slopes - 4’ x 4’ panels in varying thicknesses. Shipped in bags 3’ x 4’ x 4’.

 

Need more information or interested in a quote: