All of our information is sourced from manufacturer data.
CertainTeed
MemBrain
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Overview
Vapor Retarder (Class II)
Mechanically Attached
Polymer
Ceiling, Sloped Roof, Wall
Concrete, Masonry
Design Options
Product Description
Sheet Width
Width
Standard Sizes: 8' 4", 9' 4", 10' 4", 12' 4"
Height
Thickness
Sheet Length
Width
Height
Standard Sizes: 8' 4"
Thickness
Thickness
Width
Height
Thickness
Standard Sizes: 0"
Manufacturer Design Notes
It is appropriate in cold and mixed climates, but it is not suited for hot climates with high outdoor humidity because it would always be under high, relative humidity conditions.
Performance Data
Air Permeance
Rate of airflow through the barrier per square foot at a specified pressure difference
Tensile Strength
Weight needed to break the roll, per inch of width
Water Vapor Transmission
An imperial perm is defined as 1 grain of water vapor per hour, per square foot, per inch of mercury
perm (imperial)
0.9
Product Weight Per Area
lb / ft ^ 2
545, 555, 593, 608
Certifications
ASTM
E-84 Certified
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