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SOPREMA RESISTO Low Slope SA Base Sheet – Self-Adhesive SBS Modified Bitumen Membrane Roll
Regular price $138.50Orders start at $399 — combine any items to reach the minimum. Learn more
SOPREMA RESISTO Low Slope SA Base Sheet – Self-Adhesive SBS Modified Bitumen Membrane Roll
The SOPREMA RESISTO Low Slope SA Base Sheet is a self-adhesive base sheet membrane made of SBS modified bitumen reinforced with a fiberglass mat. One roll covers 1.5 squares and pairs with SA CAP GR for a fully self-adhesive UL 790 Class A system when adhered directly to plywood.
Key Features:
- Self-adhesive application: The membrane bonds without torch or hot asphalt, using a silicone split-back release film on the underface.
- Fiberglass reinforced: SBS modified bitumen is reinforced with a fiberglass mat for dimensional stability.
- Class A system: When adhered directly on plywood and used with SA CAP GR, the system is classified UL 790 Class A.
- Fast clean install: Self-adhesive design allows clean, fast and easy installation.
- Low-temperature flexible: The membrane remains flexible at low temperatures.
- Sanded surface: The top surface is sanded to receive the cap sheet.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | SOPREMA |
| Sell unit | 1 roll, 1.5 squares |
| Product line | RESISTO Low Slope |
| Material | SBS modified bitumen with fiberglass mat reinforcement |
| Finish / texture | Sanded surface; silicone split-back release film underface |
| Available sizes | 1.5 Square/Roll |
| Coverage per unit | 1.5 squares per roll |
| System rating | UL 790 Class A when installed on plywood with SA CAP GR |
| Installation | Self-adhesive; directly adhered on plywood |
| Intended use | Base sheet for low slope modified bitumen roof systems |
Coverage & How Much You Need:
One roll covers 1.5 squares (150 sq. ft.) of roof deck. Plan lap requirements per SOPREMA installation details when calculating total rolls for the job.
Fit and Compatibility:
Designed for use with SOPREMA RESISTO SA CAP GR cap sheet to form a fully self-adhesive low slope system classified UL 790 Class A when applied directly to plywood. Cap sheet and primers are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included with each roll?
A: Each roll is 1.5 squares of self-adhesive SA BASE base sheet membrane with a silicone split-back release film.
Q: How much area does one roll cover?
A: One roll covers 1.5 squares, or about 150 sq. ft., before laps.
Q: How is it installed?
A: Peel the split-back release film and adhere the membrane directly to the plywood deck; no torch or mopping is required.
Q: What cap sheet should I pair with it?
A: Use it with SA CAP GR; together on plywood the system is classified UL 790 Class A.
Q: Is it workable in cool weather?
A: Yes, the SBS modified bitumen compound remains flexible at low temperatures.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
This self-adhering base sheet is a good choice for low slope decks where an open flame is impractical or prohibited. Confirm the deck is clean, dry and sound before adhesion, and roll the membrane to ensure full contact. Pair it with SA CAP GR to achieve the UL 790 Class A classified assembly noted by the manufacturer.
Follow SOPREMA installation details and local building codes, and use proper ladder and roof-safety precautions during application.
Order the SOPREMA RESISTO Low Slope SA Base Sheet today for a clean, self-adhesive low slope roof system.
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