Materials:Xpress Board HD

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Materials:Xpress Board HD

Notice to the Reader:

The roofing assembly / material information published in the RCABC Roofing Practices Manual and offered below does NOT represent a complete set of the manufacturer’s data or specifications. The preparation of a detailed specification is the responsibility of the design authority.

Manufacturer: Soprema Inc.
Accepted for RoofStar Guarantee Program
Date TBA
Product Summary
XPRESS BOARD HD is approved for use by the RoofStar Guarantee Program as an insulation overlay board or as a recovery board.
Xpress Board HD is a mineral wool fibre insulation made from basalt rock and steel slag with a factory-applied polyester reinforced SBS modified bitumen base sheet on the top surface with a thermofusible plastic film on a sanded surface. The base sheet, laminated to the substrate board with an adhesive, is offset from the board on two adjacent edges (1" on one end and 3 3/8" on one side) to provide shiplap; other edges are square. To ensure a secure installation, Xpress Board HD is made up of a patented duo selvege edge unique to Soprema (70% self-adhesive and 30% thermofusible). Its self-adhesive component protects combustible surfaces and its thermofusible properties provide an efficient seal. End laps can be aligned then sealed by heat welding a membrane strip.
Xpress Board HD products are available in various thicknesses. Each board is folded in two for easy shipping and handling. It can be mechanically fastened or bonded with a full coat of hot asphalt.
Xpress Board HD can be used for the following applications:
  • As a thermal and vapour barrier directly on decks.
  • As insulation and base sheet flashing on upstands.
  • As insulation and overlay board on all types of insulation.
  • As insulation and base sheet in roof assemblies.
  • As a recovery board and base sheet on existing roofing.
Standards Details
Board dimensions - 0.91 x 4.88 (3 x 16 ft)
Membrane Dimensions - 1 x 4.98
Coverage (m2) - 4.5 (48 ft2)
Total Thickness (mm) - 12 (1/2") up to 125 (5")
R value (per 25 mm) - 4
Membrane reinforcement - Polyester
Breaking Strength, MD / XD (kN / m) CAN / CGSG-37.56M. 10.9 / 6.8
9th draft
Ultimate Elongation, MD / XD (%) CAN / CGSB-37.56M. 51 / 61
9th draft
Tear Strength, MD / XD (N) ASTM D4073 500 / 275
Cold bending (°C) - initial CAN / CGSB-37.56M. -30
90 days at 70°C 9th draft -30

Note: Xpress Board HD products of 2" and thicker are only available in 3 x 8 ft.

Soprema Inc. may modify the composition of its products without prior notice. Consequently orders will be filled according to the latest specification.

Click below for the Technical Data Sheet.
Technical Data Sheet

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