Introduction to Permeable Vapor Retarders

Air Barrier Types

Quick Building Science Basic

When Air Moves So Does Moisture

Water piggybacks on air - when air moves, so does moisture. Air movement accounts for 70-90 percent of moisture vapor transport, making it the primary driver of moisture movement.	95% more water vapor is transported by air flow.

More Gaps = More Moisture Transported into Roof Assembly

Using conventional staggered ISO as an air barrier allows significant moisture transfer from interior spaces into the roofing assembly, leading to compromised performance due to water-related issues or damage.	In a 10,000 sq.ft. roof those gaps would allow 1,172 gallons of condensation in the roofing envelope assembly, resulting in damp roofing components, unable to dry out.

Reduce moisture transfer up to 90 percent

Using SlopeShield Plus SA as Your Continuous Air Barrier Reduces Moisture to Approximately 0.075 Gallons per Year

Using SlopeShield Plus SA as a continuous air barrier and vapor retarder, you can achieve long-lasting roof integrity by reducing air and moisture infiltration by over 90%.	With a 10,000 sq.ft. roof, the HVAC system quickly absorbs the minimal moisture, preventing it from remaining in the roofing envelope assembly.

The SlopeShield Plus SA Difference

Moisture Protection Beyond the Surface

SlopeShield Plus SA functions as a continuous air barrier and permeable vapor retarder membrane: Reducing 90% of air and moisture infiltration Safeguarding from prolonged moisture-related damage Enhancing building health and energy efficiency

Learn More About SlopeShield Plus SA for Your Application

Specify SlopeShield Plus SA in DIV 07 as Your Preferred Code-Compliant Continuous Air Barrier