Perm-A-Barrier Wall Flashing - 36" x 75' Roll

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Quick ID: Q25048
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Usually Leaves Warehouse Same/Next Business Day

Helpful Hint

Priming is required for this product. Apply the primer directly to the concrete. Do not apply primer to Bituthene membrane. You can find Perm-A-Barrier W.B. Primer here


Grace Perm-A-Barrier Wall Membrane is a self-adhesive, rubberized asphalt/polyethylene waterproofing membrane for air and vapor barrier applications. The 40 mil total thickness is a cold applied tape consisting of 32 mils of rubberized asphalt integrally bonded to a 8 mil high density, cross laminated polyethylene film. The cross laminated film provides dimensional stability with the flexibility to accommodate minor settlement and shrinkage. It has high tear strength, is puncture and impact resistant while self-sealing around mechanical fasteners. Apply to masonry, concrete, steel, gypsum and wood at a surface temperature above 25 degrees.


  • Fully bonded to resist wind loads and prevents water tracking behind the tape
  • Waterproof and impermeable to moisture
  • Cross laminated film provides high tear strength, puncture and impact resistance
  • Cold applied - no flame hazard
  • Self-sealing around fasteners
  • Ripcord split release on demand
  • Foldless release paper for quicker one-man installs
  • Apply to masonry, concrete, steel, gypsum and wood
  • ** Prime with Perm-A-Barrier W.B. Primer and allow to completely dry before installation


Manufacturer Part Number45548
Sub BrandGCP Applied Technologies
Coverage - Square Feet225
Installation MethodSelf-Adhering; Must be pressed firmly into place with a hand roller as soon as possible. May be applied vertically or horizontally. Ensure all side and end laps overlapped by minimum of 2 in. and are water-sheding - top membrane layer over bottom membrane
Installation Temperature25 Degrees Fahrenheit or Higher
Length - Feet75
Package Quantity1
Ultraviolet Protection60 Days
Width - Inches36
Ships to HI/AKNo