General performance characteristics of sheathing wraps are summarized the table below. Because of differences in data sources the perm ratings for some of these materials may vary a bit from those given in the general building materials permeability table given above. The table above gives perm … See more Here are permeability numbers for some common building materials. Our references below include perm data for many other materials. See more Questions & answers or comments about how to approach finding and fixing building leaks or high moisture troubles. Try the search box just below, or if you prefer, … See more
How many coats of paint for a vapor retarder - GreenBuildingAdvisor
WebMoisture Vapor Barrier Primer/Finish Interior Latex is a coating designed to reduce the loss of moisture through walls and ceilings. It combines a primer and finish in a single, fast … WebThe 2009 IRC defines Class I vapor retarders as a material or assembly with a rating of ≤0.1 perm. Examples of Class I vapor retarders include rubber membranes, polyethylene sheeting, glass, aluminum foil, sheet metal, foil-faced insulating sheathings, foil-faced non-insulating sheathings, and vinyl wall paper. dancin chords
Vapor Barrier Paint & Primer Works Better than …
WebProduct Details. The PPG Seal Grip Perm Sealer Vapor Barrier is designed for use on interior walls and ceilings where a non-breathing, vapor barrier primer sealer is required. This product retards interior moisture migration from a warm moist area of a home or building to a cold dry area. As a result, the insulation is protected from getting ... WebFeb 1, 1995 · Vapor-retarder paints typically have a perm rating of .8 to .45, but the actual perm in the field depends on the number of coats and the degree of coverage. A … WebJan 21, 2024 · Reading more about the perm ratings, it became clear to me that something was wrong with this picture. This link: http://www.energy.wsu.edu/Documents/BFG%20Chapter%205-Jan2011.pdf shows that Latex Primer/Sealer is 6.28 perms, while PVA Primer is 5.5 perms. So, what I used is a … dancingalacarte.net