All of our information is sourced from manufacturer data.
WRB (Weather/Water Resistant Barrier)
Sloped Roof, Wall
Concrete, Masonry, Wood Sheathing
Standard Sizes: 9-3/4", 1' 7-1/2", 4' 11"
Standard Sizes: 9' 7"
Manufacturer Design Notes
DELTA®-VENT SA is a vapor-permeable WRB, allowing moisture within the building enclosure to escape through the membrane via diffusion. Its permeability and air-tightness make it an ideal air and water-resistive barrier membrane for energy-efficient construction.
Roll 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
Product Weight Per Area
lb / ft ^ 2
Minimum Temperature Rating
The lowest temperature that the product has been confirmed to still function at.
Minimum Application Temperature
Minimum temperature that the product can be applied or installed
Rate of airflow through the barrier per square foot at a specified pressure difference
cfm /ft^2 @ 1.57 psf
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