Smart Membrain installation details
I am installing CertainTeed’s Smart Membrain product over 5.5″ of Owens Mineral Wool insulation. The installation instructions are not very clear in the fine details unless I am installing the product as an ‘air barrier’ in addition to vapor retarder. Located in zone 5.
My insulation is obviously face-less and has no barrier. I have 7/16″ OSB and Greenguard 3D Rraindrop House Wrap over that, with Vinyl siding covering the house. The house wrap was taped, but I am certain every staple and siding nail has punctured it in many ways.
I am just stapling the edges of this membrain product per install instructions. It’s not clear about outlets and fixture openings. I’m considering cutting the product tight and fitting it over the outlet boxes and then taping that seam – but this seems pointless if I am not taping and sealing the product at windows, top and bottom plates, and where partition walls meet into exterior walls.
What should I be doing here? I’d like to install the product properly, but I am not sure taking time to seal around punctures in the product will do me any good? This also applies to every location that I staple to the stud. Without caulking, there will be leaks around each staple. Any suggestions on what installation method I should follow?