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

Garage Wall Assembly

pico_project | Posted in General Questions on

I’m in the middle of insulating our attached garage. It will not be heated except for a small utility closet.

2×4 walls consist of the following:

1/2 Plywood (interior)
R15 Rockwool
1/2 Plywood
Siga Mavjest 500 SA
Hardie Lap Siding (no rain screen)

I don’t plan on painting the interior plywood. I might seal/coat it with something simple.

Should I be concerned about moisture getting into the walls? Would it be smart to put something like Intello on? Or would it be fine on its own?

I was thinking about filling gaps with putty before sealing. But there will be exposed screws and I want to keep the panels somewhat easily removable for future services/updates (most things come into the house from W garage wall).

The ceiling is drywall. The attic floor will air sealed

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.


Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |