Replies

1. Expert Member
   Zephyr7|May 12, 2020 07:10pm|#1

   Smart vapor retarders like membrain and intello are safer than polyethylene sheet.

   I would use urethane sealant around the perimeter (to seal the sheeting to the framing), and 3M flashing tape to seal and joints between sheeting sections wherever you can’t use a continuous piece. I wouldn’t use acoustical sealant for a vapor retarder/barrier sealing application like this.

   Bill

2. Expert Member
   Akos|May 12, 2020 08:34pm|#2

   I've used a PL sealant that is very close the OSI and Titebond. Much friendlier than standard black acoustical sealant. Not as sticky but much easier to clean up. If you are putting the drywall up right after the VB, either one would work. If you will let it sit for a couple of days, these sealants will harden so make sure you smooth the edges flat.

   The black stuff is great as it will stay flexible and never set, but it is a pain to work with. It will also get on everything near it so make sure you change your clothes before you get into your car or sit on a chair you care about.

3. 
   Wesley Pracht|May 12, 2020 10:20pm|#3

   Thanks for the responses. I feel like it is wasting money to buy a smart barrier, as I live in a pretty dry climate. Sierra Nevada mountains California, cold snowy winters, dry summers.

4. 
   Vlad Shpurik|May 13, 2020 02:18am|#4

   I have 7 or 8 29 Oz tubes of Tremco left from last year when I've used it for sealing sill plates. Let me know if you are interested.

1. 
   Wesley Pracht|May 13, 2020 10:57am|#5

   Hello Vlad, I don't see a way to message you privately here, so could you email me please? Wesley.Pracht at Gmail

   Thanks