MemBrain 9 ft. x 100 ft. Air Barrier with Smart Vapor Retarder

Thank you for your question Arnie! Our MemBrain product can be used in crawl spaces if it will not be exposed to UV light. The product is not, however, intended for use on crawl space floor. If you have any further questions, please reach out to our Sales Support Group at 800-233-8990. They will be happy to further assist you!

A regular T50 type stapler works well. We used an inexpensive pneumatic stapler with 1/2" T50 staples - it speeds up installation and avoids hand & wrist fatigue.

Yes, it's a good choice to use over brick especially when used in conjunction with mineral wool insulation. It will help prevent moisture build up under your drywall.

No Product is clear w/ the certain logo running across it.

You probaby can, but not needed when you use the kfaft facedinsulation. the kraft paper and its backing act as the vapor redarder.

Thank you for your question! We have many published articles and technical information available that speak to the quality and performance of CertainTeed’s MemBrain product. Please refer to the MemBrain page of the CertainTeed website for technical information. https://www.certainteed.com/building-insulation/products/membrain/ If you have any further inquiries please call one of the members of CertainTeed’s Sales Support Group at 800-233-8990 and they will be happy to assist you!

Dear Steve: Thank you for your question! MemBrain Continuous Air Barrier & Smart Vapor Retarder is a Class A Fire Rated 2-mil thick film of polyamide (nylon). One of the main reasons why the Membrain Continuous Air Barrier & Smart Vapor Retarder is superior to other products is because of the advanced technology that allows the product to sense and adapt premeance to varying humidity in order to keep the cavity dry. Homes using traditional polyethylene vapor retarders may actually trap moisture in the cavity during the summer months- raising the risk of costly moisture and mold issues, structural damage, health consequences and liability. This patented, revolutionary solution can provide a continuous air barrier along with advanced moisture management in a single product, helping achieve Complete Comfort. If you would like more information on CertainTeed’s MemBrain product, please refer to the following page of CertainTeed’s website: https://www.certainteed.com/building-insulation/products/membrain/ If you have any further inquiries please call one of the members of CertainTeed’s Sales Support Group at 800-233-8990.

This is a vapor shield typically used in basements to cover the insulation instead of drywall. We used it in a county that required it specifically as the only alternative to drywall (which was a significantly more expensive finish).

Yes this product is a good vapor retarder and will help keep drafts out. According to the manufacture if it gets damp the material has special pores that adapt to the moisture and can open up more to dry out. This helps to keep mold from forming. Unless you have a basement that stays wet. Then you would need to address that issue first. Just be sure you do not have any mold on or behind the existing insulation. Hope this helps, ED~

Yes, Membrain would be a good choice here. It's much better than poly in that it helps prevent moisture from building up inside the wall. This is important because fiberglass loses R value when it gets damp.