For extra protection against moisture, the MemBrain Continuous Air Barrier and Smart Vapor Retarder is your weapon of choice. It lets wall cavities dry out, to help prevent mold. In summer, when humidity is high, it increases permeability so that moisture can escape, as air tightness is maintained. In winter, when humidity is low, it continues to block moisture. Use MemBrain with un-faced insulation in place of kraft faced insulation or polyethylene. Not all climate zones require vapor retarders.

Brand Name: CertainTeed
Sub Brand: MemBrain
Width: 9 ft.
Length: 100 ft.
Product Type: Air Barrier and Smart Vapor Retarder
Roll or Batt: Roll
Coverage Area: 933 sq ft
Formaldehyde Free: Yes
Usage: Attics and Walls
Vapor Retardant: Yes
Thickness: 2 mil
Number in Package: 1 pk
Energy Star Certified: No