Upstairs/attic Room Insulation - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools
Display Modes
Old 04-06-2010, 12:12 PM   #1
Join Date: Apr 2010
Posts: 2
Rewards Points: 10

Upstairs/attic room insulation

We have a playroom upstairs. The ceiling and 2 walls are adjacent to the un conditioned attic. Should the walls be insulated to the same R-value as the ceiling? the walls have sprayed foam in 2x4 walls plus 1" rigid foam with foil on the attic side. ceiling has cellulose at 8" nominal. House is in the deep south. Maybe a dumb question but in this instance why wouldn't the walls need the same amount as the ceiling?
Jmcc64 is offline   Reply With Quote
Sponsored Links
Old 04-06-2010, 01:43 PM   #2
Remodeling Contractor
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Rewards Points: 2,000

stack effect. hot air moves up, so more heat loss and gain is thru the ceiling. at the top and at the bottom of these knee walls you need to air seal the joist bays completely to avoid air wind washing the insulation and rendering it useless. Basically isolate the unconditioned attic completely from the conditioned space.
Bob Mariani is offline   Reply With Quote
Sponsored Links

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
advice/Help on non-permitted bonus room? Orange_County General DIY Discussions 43 06-11-2010 05:06 PM
Adding attic insulation pomelo Building & Construction 3 10-22-2009 05:19 PM
How hard to install insulation yourself? techprincesse Building & Construction 26 10-17-2009 09:57 AM
Old home insulation woes nowwhatnapster Building & Construction 15 11-02-2008 11:59 PM
Heat pump in non insulated nor heated room robdville HVAC 3 01-21-2008 02:51 PM

Top of Page | View New Posts