GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Taping Bottom Seams of Exterior Foam Insulation

Bonai | Posted in General Questions on

Hi,

I understand the seams of the insulation boards need to be taped. I already have the bottom seams of the OSB sheathing taped with the concrete of the foundation. Do I have to tape the bottom seams of the insulation boards to the concrete? I think the answer is yes, as we want to reduce air leak.

I have seen people using regular vapour barrier tape… My plan is to use the Siga wigluv tape for that, as it is exterior/rain rated and…I am building a rain screen… Am I overdoing it?

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Replies

  1. Expert Member
    Malcolm Taylor | | #1

    Bonai,

    - Are you using the insulation as your WRB?
    - What is your primary air-barrier?

  2. Bonai | | #2

    Blueskin VP 100 is the primary WRB.
    Im quite confident both type of tape will initially stick on the foam boards, especially that they are covered with a poly film. But overtime, the normal vapour tape is not exterior/rain rated... Thats why I am thibking to spend more and go with the Siga tape.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |