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

Old wall adding insulation

askeena7 | Posted in General Questions on

Hi all,

the front wall of my house is the old heart pine lap siding nailed directly to the studs. I’m getting ready to insulate it and weighing my options.

my plan as of now is to 30# tar paper between the stud bays (left a few inches wide in order to create stapling tabs on the studs) then r 15 comfort batt Rockwool followed by airtight drywall followed by the original interior wood wall covering. 

Any thoughts? Should I “back prime” from the siding from inside prior to the tar paper and insulation? 

I’m in hot humid Deep South!
Thanks in in advance for any tips!

-Frankie

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. b_coplin | | #1

    You'll need an air gap between the insulation and siding. Several approaches are outlined in the article below.

    https://www.greenbuildingadvisor.com/article/insulating-walls-in-an-old-house-with-no-sheathing

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |