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


Thread Tools Search this Thread Display Modes
Old 01-19-2010, 07:50 PM   #1
Join Date: Dec 2008
Location: WV
Posts: 64
Share |

attic insulation / knee wall

Okay, the pics are part of a finished attic, behind the knee wall. Looking for suggestions on what I should do to insulate it. I am not seeing moisture issues. The cellulose is only about 5 inches. The silver you see is fiberglass in bags, silver on one side, brown paper on the other side, R11. The top and bottom show the side wall does not have insulation, is there a reason for this? The knee walls do not have any insulation. The duct work, for a second furnace, is only insulated about half the distance with fiberglass and plastic wrap.

Current thoughts, first looking for leaks, put in durovent attic vents, insulation over that. Was thinking about adding some insulation to the knee walls. For the duct work seal joints then wrap with insulation the foil/fiberglass stuff they sell. I've read some of the other threads, I'm looking more for any spoilers or oddities that you guys might see.

oscarMadison is offline   Reply With Quote
Old 01-19-2010, 08:06 PM   #2
Join Date: Oct 2008
Location: Wisconsin
Posts: 228

attic insulation / knee wall

The knee walls should be insulated. I have a similar condition in my attic, and I installed r-13 between the studs plus nailed 1" thick rigid insulation to the back of the studs to get the equivalent of R-19 in the walls.

It seems like the insulation in the rafters and ceiling joists could be redundant, but it's not clear from the pictures. Either way, it's probably not enough for your area. Typically, you either insulate the ceiling joists space and leave the rafters/roof framing exposed, or you insulate the rafters and leave the ceiling framing open. See the link on the following site for an idea of what I'm talking about:

Some advice you receive on the internet can be worth exactly what you paid for it - be careful.
stubborn1 is offline   Reply With Quote
Old 01-19-2010, 08:37 PM   #3
Join Date: Dec 2008
Location: WV
Posts: 64

attic insulation / knee wall

Yeah that's what I thinking for the knee walls fiberglass and rigid board if they needed it. Rigid board to add extra insulation to both bay and stud.

I thought the insulation in both the joists and ceilings might be redundant but wasn't sure. I love the energysavers sight
oscarMadison is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
attic knee walls gregt848 Building & Construction 2 09-27-2009 11:07 AM
2x4 Exterior Wall Insulation stubits Building & Construction 4 03-19-2009 07:03 AM
Attic moisture Carstonio Roofing/Siding 14 01-29-2009 11:35 AM
Attic insulation Hammiamm Roofing/Siding 5 12-02-2008 02:39 PM
attic knee wall insulation improvments truebaca Building & Construction 1 07-07-2007 10:04 AM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.