SOPRABOARD asphaltic cover board is a semi-rigid roofing substrate board for use in multi-ply modified bitumen membrane and flashing assemblies and also serves as a protection board for waterproofing applications. SOPRABOARD is composed of a mineral fortified asphaltic core formed between two fiberglass reinforcing plies and is available in variety of lengths and thicknesses.

Product Properties

  • Material Asphaltic
  • Type Board
  • Use Coverboard


Place SOPRABOARD in desired position. Butt edges and stagger joints of adjacent boards. Secure boards to substrate using mechanical fasteners, insulation adhesive or hot asphalt. For approvals and listings to meet project-specific wind rating requirements, contact SOPREMA.

Refer to the SOPREMA Low-Slope Roofing Insulation Technical Manual for complete application guidelines.


Testing & Approvals

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Related Projects

Placer County Water Agency – Auburn, California

In 2015, the Placer County Water Agency took on a tear-off roofing project, in which SOPREMA products were used. SOPREMA was the right choice for this project because the breadth of products met the designer’s needs, including meeting California Title 24 energy efficiency standards with the use of ENERGY STAR® rated SOPRASTAR® Flam. Another appealing aspect was the versatility of SENTINEL® P150, which allowed coverage for the vertical walls throughout the roofing system.

Woodridge Middle School – Peninsula, Ohio

With a tight schedule to meet, Woodridge Middle School was relying on SOPREMA’s SENTINEL products to do the job. The previous shingle and PVC roof was replaced with SOPRA-ISO, and tan SENTINEL P150 HFB. The gutters were then lined with ALSAN RS 222 primer and ALSAN RS 230 Flash.