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SOPREMA SOPRABOARD Asphaltic Coverboard, 4 ft. x 8 ft. Semi-Rigid Substrate Board, Gray
Regular price $24.06Orders start at $399 — combine any items to reach the minimum. Learn more
SOPREMA SOPRABOARD Asphaltic Coverboard, 4 ft. x 8 ft. Semi-Rigid Substrate Board, Gray
Soprema SOPRABOARD is a semi-rigid asphaltic substrate board for approved multi-ply membrane and flashing assemblies, made with a mineral-fortified asphaltic core between two fiberglass plies. It is sold per board in 1/8 in. and 1/4 in. thicknesses in 4 ft. x 8 ft. and 4 ft. x 4 ft. sizes. It is designed for use with SOPREMA SBS-modified bitumen membranes.
Key Features:
- Asphaltic core: Mineral-fortified asphaltic core formed between two fiberglass reinforcing plies.
- High compressive strength: Offers superior compressive strength versus competitive materials.
- No priming needed: Requires no priming in most applications.
- Strong assemblies: Asphalt-to-asphalt compatibility produces some of the highest wind and fire rated assemblies over most decks, up to -525 lb/sq ft.
- Multi-ply ready: Designed for approved multi-ply membrane and flashing assemblies.
- Waterproofing protection: May also serve as a protection board in SOPREMA waterproofing systems and assemblies.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Soprema |
| Sell unit | 1 board |
| Product line | Soprema SOPRABOARD |
| Material | Mineral-fortified asphaltic core with two fiberglass reinforcing plies |
| Color / finish | Gray |
| Available colors | Gray |
| Available sizes | 1/8 in. x 4 ft. x 8 ft., 1/4 in. x 4 ft. x 8 ft., 1/8 in. x 4 ft. x 4 ft. |
| Dimensions | 4 ft. x 8 ft. boards in 1/8 in. and 1/4 in. thickness; 4 ft. x 4 ft. board in 1/8 in. thickness |
| Wind / fire rating | Supports assemblies up to -525 lb/sq ft wind rating as printed |
| Coverage per unit | 32 sq ft per 4 ft. x 8 ft. board; 16 sq ft per 4 ft. x 4 ft. board |
| Intended use | Substrate/coverboard for multi-ply membrane and flashing assemblies; protection board in waterproofing systems |
| Product category | Commercial Roofing > Coverboards > Specialty Coverboard |
Coverage & How Much You Need:
A standard 4 ft. x 8 ft. board covers 32 sq ft, and the 4 ft. x 4 ft. board covers 16 sq ft. Divide the roof area by board size and add 5-10% for cuts and staggered joints.
Fit and Compatibility:
Made for SOPREMA SBS-modified bitumen membranes and approved multi-ply and flashing assemblies, and usable as protection board in SOPREMA waterproofing systems. Membranes, fasteners and adhesives are sold separately; confirm the assembly is an approved system.
Frequently Asked Questions (FAQ):
Q: What thicknesses are available?
A: The line is offered in 1/8 in. and 1/4 in. thicknesses in 4 ft. x 8 ft. boards, plus a 1/8 in. 4 ft. x 4 ft. board.
Q: How many boards do I need?
A: A 4 ft. x 8 ft. board covers 32 sq ft; divide your roof area by 32 and add a cut allowance.
Q: Does it need priming before membrane application?
A: No, priming is not required in most applications per the manufacturer.
Q: Can it be used under flashing details?
A: Yes, it is approved for use in multi-ply membrane and flashing assemblies.
Q: What is it made of?
A: A mineral-fortified asphaltic core sandwiched between two fiberglass reinforcing plies.
Q: Can it be used in waterproofing?
A: Yes, it may be used as a protection board in SOPREMA waterproofing systems and assemblies.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose 1/4 in. board where higher insulation protection or a flatter membrane substrate is wanted; 1/8 in. suits standard coverboard and flashing detail work. The asphaltic core bonds directly with bitumen, which is why most jobs skip priming. Stagger board joints and fasten or adhere per the membrane assembly specification before applying the ply system.
Verify the complete assembly, deck type and attachment pattern are part of an approved system before installation, and follow local building code requirements.
Add Soprema SOPRABOARD coverboard to your multi-ply roofing system for a stronger, higher-rated roof assembly.
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