Personal tools
log in | join | help
Sections

I have a 1909 home in North Dakota with a pitched roof that needs insulating.

by LiveModern Webmaster last modified Feb 14, 2013 01:08 AM
Editorial Rating: 1 2 3 4 5
Average Rating: 1 2 3 4 5 ( 0 votes)
by last modified Feb 13, 2013

I have a 1909 home in North Dakota with a pitched roof. I have a dormer with the slanted plaster ceiling under the roof. Amazingly, there is no insulation in many places between the ceiling and the roof deck. On snowy days, you can see where there is no insulation since the snow melts. The joist are 2 x 4. My thought is to open up the ceiling and install 3 inches of rigid foam insulation or do spray foam. If I do spray foam (or even blown in cellulose), there will no be air flow under the deck. I'd like a professional's take on this problem. I'm not worried about the demolition or redoing the ceiling to match. Thanks.




 

 

I have a 1909 home in North Dakota with a pitched roof. I have a dormer with the slanted plaster ceiling under the roof. Amazingly, there is no insulation in many places between the ceiling and the roof deck. On snowy days, you can see where there is no insulation since the snow melts. The joist are 2 x 4. My thought is to open up the ceiling and install 3 inches of rigid foam insulation or do spray foam. If I do spray foam (or even blown in cellulose), there will no be air flow under the deck. I'd like a professional's take on this problem. I'm not worried about the demolition or redoing the ceiling to match. Thanks.

What you are describing is commonly called a hot roof system and is actually my favorite type.

With that said, even if you filled that cavity full with closed cell foam like...


 

 

 
 
 

Website migration, maintenance and customization provided by Grafware.