Johns Manville Vapor Barrier SAR Sheeting Roll, 3.44 Squares per Roll

This is a Johns Manville Vapor Barrier SAR sheeting roll rated at 3.44 squares (344 sq ft) of coverage per roll. It is sold as a single roll and is used as an air and vapor barrier behind interior finishes. Pair it with compatible sealants and seam tape from the same weatherproofing system.

Key Features:

• Air and vapor control: Functions as an air and vapor barrier sheeting in wall assemblies.
• Roll format: Supplied as one continuous roll for efficient installation over large wall areas.
• Generous coverage: Each roll covers approximately 3.44 squares, or 344 square feet.
• Manufacturer backed: Produced by Johns Manville, an established insulation and building materials manufacturer.
• Single variant: Offered in one roll configuration matching the listed 3.44 squares per roll.

Specifications Table:

Coverage & How Much You Need:

One roll covers approximately 3.44 squares (344 square feet). Measure your wall area, add allowance for laps and penetrations, and divide by 344 sq ft to determine the number of rolls.

Fit and Compatibility:

Use within wall assemblies as part of a Johns Manville air and vapor barrier approach, with compatible seam sealants and fasteners specified by the manufacturer. Tape, sealants and fasteners are sold separately.

Frequently Asked Questions (FAQ):

Q: What is included with one order?
A: One roll of Johns Manville Vapor Barrier SAR with approximately 3.44 squares (344 sq ft) of sheeting.

Q: How many rolls do I need?
A: Measure the wall surface area, add material for overlaps and waste, then divide the total by 344 square feet per roll.

Q: Where is this product installed?
A: It is installed as an air and vapor barrier sheeting within wall assemblies, typically behind interior finish materials.

Q: What fastens the barrier?
A: The manufacturer’s installation instructions should be followed; cap fasteners or compatible attachment methods and seam sealants are typically required and sold separately.

Q: Is this a breathable membrane?
A: The listing identifies it as an air and vapor barrier sheeting; consult the manufacturer’s data sheet for permeance details not stated in the listing.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Size your order from the net wall area after deducting openings, then add roughly 10 percent for laps, cuts and waste. Continuity matters more than thickness with vapor barrier sheeting, so seal all seams, penetrations and transitions. Keep a detailing product such as compatible tape on hand before you start.

Follow manufacturer installation guidance and local building code requirements for vapor barrier placement in your climate zone.

Order the Johns Manville Vapor Barrier SAR roll for dependable air and vapor control in your wall assemblies.