righter101
Gold Member
- Joined
- Dec 5, 2009
- Messages
- 604
From the 2009 IRC:
R506.2.3 Vapor retarder. A 6 mil (0.006 inch; 152 μm) polyethylene or approved vapor retarder with joints lapped not less than 6 inches (152 mm) shall be placed between the concrete floor slab and the base course or the prepared subgrade where no base course exists.
Climate is NW Washington, so quite wet.
Anyone allow just R-10 rigid (closed cell) with Tyvek taped seams?
Yes/No? By policy or just tradition? or not allowed?
Slab is heated, residential space, none of the R506.2.3 exceptions would apply.
Just renewed my Sawhorse. Thank you to everyone for keeping this forum up and running with some great code discussions. I have really enjoyed reading such a variety of posts and opinions.
R506.2.3 Vapor retarder. A 6 mil (0.006 inch; 152 μm) polyethylene or approved vapor retarder with joints lapped not less than 6 inches (152 mm) shall be placed between the concrete floor slab and the base course or the prepared subgrade where no base course exists.
Climate is NW Washington, so quite wet.
Anyone allow just R-10 rigid (closed cell) with Tyvek taped seams?
Yes/No? By policy or just tradition? or not allowed?
Slab is heated, residential space, none of the R506.2.3 exceptions would apply.
Just renewed my Sawhorse. Thank you to everyone for keeping this forum up and running with some great code discussions. I have really enjoyed reading such a variety of posts and opinions.