Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Site Notices
1/22/2020 12:12:56 PM
Posted: 1/19/2015 5:15:55 PM EST
My house was built with 2x4 outer walls, unfaced fiberglass batts with a vapor barrier put underneath the drywall, and untaped Celotex on the outside (no plywood/OSB sheathing). I'm re-siding it this spring with LP Smartside. Should I tape the Celotex seams or could this cause moisture issues being sealed up on both sides? How about a Tyvek wrap to help with air movement, yet allow it to breathe?

Location is northwest Indiana.





Link Posted: 1/19/2015 7:10:06 PM EST
Tyvek
Link Posted: 1/19/2015 7:19:27 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Mousegun:
Tyvek
View Quote



Yep. I would tyvek the whole thing and add rigid insulation prior to siding

Posted Via AR15.Com Mobile
Link Posted: 1/19/2015 7:31:30 PM EST
Is there any let-in bracing since there is no sheathing?
Or other lateral support?
You don't give any dimensions of the house, so I cannot comment on whether the drywall is adequate.

Celotex is an insulation board, no structural diaphragm capacity.

Your house needs an air barrier and the joints should be taped.
Link Posted: 1/20/2015 5:07:05 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By SperlingPE:
Is there any let-in bracing since there is no sheathing?
Or other lateral support?
You don't give any dimensions of the house, so I cannot comment on whether the drywall is adequate.

Celotex is an insulation board, no structural diaphragm capacity.

Your house needs an air barrier and the joints should be taped.
View Quote
Good question. I would assume they notched out and did corner bracing, but I'm not sure. That seemed to be the norm back then. It's a 1300 sq ft ranch style house, built in 1978.

With the vapor barrier under the drywall, wouldn't that trap moisture if I taped the celotex seams?


Top Top