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CONFUSED ABOUT VAPOR BARRIERS?

One of the most difficult decisions you can be faced with is trying to compare products as “true” alternatives to each other. Thankfully, testing procedures allow you the ability to compare physical properties side by side. W. R. MEADOWS, the originator of below-slab vapor protection, is concerned that confusing information is being provided to you, the specifier. If you design it, you own it, so you need to trust the companies you’re dealing with.

FACT:
There are two vapor retarder specifications with very different performance requirements. They are ASTM 1745 Class A, B, and C for plastic film vapor retarders and the more stringent (lower perm rating) ASTM 1993 specification for critical area use.

Be wary of download specifications that pit an ASTM 1745 material against a material that meets the more stringent ASTM 1993 specification. The ASTM 1993 material is 150 times more effective at stopping water vapor. Confusing? You decide – it’s your building … forever.

ASTM E1745

ASTM E1745 Class A, B, and C for plastic film vapor retarders
3-Part Specification - Underslab Vapor Barrier (PERMINATOR® 10 mil)
3-Part Specification - Underslab Vapor Barrier (PERMINATOR® 15 mil)

ASTM E1993

ASTM E1993, the more stringent (lower perm rating) specification for critical area use
3-Part Specification - Underslab Vapor Barrier - 0.0011 perm rating
PREMOULDED MEMBRANE® VAPOR SEAL w/PLASMATIC® CORE

At W. R. MEADOWS, we believe it’s important to provide the “true” facts, and we’ve built our business on that premise since 1926. We provide easy jobsite identification printed on the product at regular intervals – with W. R. MEADOWS, you know you get what you specify. This isn’t always the case with all vapor barriers. Isn’t it important that you know what’s on your project?

Would you like to learn more about the difference between the two specifications?

Do you want to know how to protect all areas of your building from the ingress of moisture?

You only get one shot at doing it right. Trust the innovator of below-slab vaporproofing,

Call us today 800-342-5976. We provide the straight facts you can trust.


“Quality ... Integrity ... Service”