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Duro-Last DL VB Self-Adhesive Vapor Barrier, 45 in. x 133 ft. Roll, White
Regular price $510.96Duro-Last DL VB Self-Adhesive Vapor Barrier, 45 in. x 133 ft. Roll, White
This is Duro-Last DL VB, a self-adhesive vapor barrier supplied as a 45 in. x 133 ft. white roll. It combines SBS modified bitumen adhesive on the bottom surface with a tri-laminated woven polyethylene top surface, covered by a silicone release film. One roll is the sell unit; it pairs with Duro-Last Vapor Barrier Primer.
Key Features:
- Self-Adhesive: SBS modified bitumen adhesive on the bottom surface bonds without separate adhesives.
- Woven Poly Top: Tri-laminated woven polyethylene top surface provides a durable barrier layer.
- IECC Compliant: Meets IECC air barrier requirements for mechanically fastened roofing systems.
- Quick Release Film: Silicone release film removes quickly for faster installation.
- Self-Sealing: Self-sealing construction helps maintain a continuous air and vapor barrier.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Duro-Last |
| Sell unit | 1 roll, 45 in. x 133 ft. |
| Product line | Duro-Last Vapor Barrier (DL VB) |
| Available colors | ['White'] |
| Available sizes | ['45 in. x 133 ft.'] |
| Dimensions | 45 in. x 133 ft. roll |
| Material | SBS modified bitumen adhesive with tri-laminated woven polyethylene top surface |
| Color / finish | White |
| Coverage per unit | Approximately 498.75 sq. ft. per roll before laps |
| Intended use | Air/vapor barrier for mechanically fastened commercial roofing systems |
| Air barrier | Meets IECC air barrier requirements for mechanically fastened roofing systems |
| Backing | Silicone release film over self-adhesive bottom surface |
Coverage & How Much You Need:
One 45 in. x 133 ft. roll provides roughly 499 sq. ft. of nominal coverage before laps and overlaps. Plan roll layout so side and end laps follow the manufacturer's installation requirements for a continuous air barrier.
Fit and Compatibility:
Designed for mechanically fastened commercial roofing systems where an IECC-compliant air/vapor barrier is required. Use with Duro-Last Vapor Barrier Primer (sold separately) on prepared substrates.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of Duro-Last DL VB vapor barrier, 45 in. x 133 ft., white.
Q: How much area does one roll cover?
A: The roll measures 45 in. by 133 ft., about 499 sq. ft. nominal; actual coverage is reduced by laps.
Q: Is primer required?
A: Use with Duro-Last Vapor Barrier Primer on the substrate per the manufacturer's installation instructions; primer is sold separately.
Q: Does it meet air barrier code requirements?
A: Yes, it meets IECC air barrier requirements for mechanically fastened roofing systems.
Q: How is it installed?
A: Peel the silicone release film and press the self-adhesive SBS modified bitumen surface onto the prepared substrate; it is self-sealing.
Q: What is the membrane made of?
A: SBS modified bitumen adhesive on the bottom and tri-laminated woven polyethylene on the top surface.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Install DL VB with primer on clean, dry decks and roll it firmly to achieve full adhesive contact, especially at laps and penetrations. Its IECC air barrier compliance makes it a straightforward choice for mechanically fastened single-ply assemblies. In humid or cold conditions, verify substrate temperature before peeling the release film for best tack.
Use caution when peeling release film and walking on the membrane; apply only on dry surfaces and follow manufacturer installation and jobsite safety requirements.
Order the Duro-Last DL VB vapor barrier roll for an IECC-compliant air barrier under your next commercial roof.
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