Vapor retarder class

A measure of a material or assemblyÕs ability to limit the amount of moisture that passes through that material or assembly. Vapor retarder class shall be defined using the desiccant method of ASTM E96 as follows:

Class I: 0.1 perm or less.

Class II: 0.1

« Back to Glossary

The Best Commercial Roofing Company

Our Office
6649 Peachtree Industrial Blvd Ste K

Peachtree Corners, GA 30092

Call us at
(678) 264-3686

Let's get to know each other

Email Us At
info@parsonsroof.com

Expect a response within 24 hours

Our Office
6649 Peachtree Industrial Blvd Ste K

Peachtree Corners, GA 30092

Call us at
(678) 264-3686

Let's get to know each other

Email Us At
info@parsonsroof.com

Expect a response within 24 hours

Do NOT follow this link or you will be banned from the site! Scroll to Top