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

When OSB Sheathing Gets Wet

Mecajunboy01 | Posted in General Questions on

With all the rain lately, as I’m waiting to apply the Shingles to my shed, anyone have any idea how much water the exposed OSB sheeting will tolerate b4 it starts to deteriorate / swell.

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
    KYLE WINSTON BENTLEY | | #1

    OSB can handle rain OK, but it resists water better when it's a vertical surface, such as a wall. If you're going to put shingles on later, I'd go ahead and at least cover it with #15. That'll alleviate a large portion of the water that ever touches the surface, and will allow it to dry between rains.

    A month isn't the worst thing in the world. Obviously the sooner you cover it the better it'll be.

    1. Mecajunboy01 | | #2

      Just tack it over the wet OSB?

      1. Expert Member
        MALCOLM TAYLOR | | #3

        Mecajunboy01,

        Yes. Building paper and house-wrap are permeable. That is they designed top allow drying to the outside, without letting rain water in.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |