Does Bottom Half Of Concrete Knee-wall Have To Be Insulated? - Insulation - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Insulation

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread
Display Modes
Old 02-23-2016, 10:37 AM   #1
Newbie
 
Join Date: Feb 2016
Posts: 1
Rewards Points: 2
Default

Does bottom half of concrete knee-wall have to be insulated?


We live in Oakland, California. We have an unfinished basement that we would like to finish up and insulation is on our list. The house was built in 1920. The basement is rimmed with a knee-wall foundation and the top half is framed out with studs that sits on top of the knee wall. We want to level out the wall and get rid of the "shelf" that the knee wall creates. Do we have to insulate the bottom half? Or is insulating the top half so it juts out and evens out with the knee wall enough to keep warmth in the basement?

Last edited by jet2dresq; 02-23-2016 at 10:40 AM. Reason: more details
jet2dresq is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-23-2016, 11:43 AM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,042
Rewards Points: 878
Blog Entries: 41
Default


Insulate the bottom half as well.

Rigid foam works well in most basement masonry wall applications.
Windows on Wash is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-24-2016, 09:44 PM   #3
Registered User
 
Join Date: Mar 2009
Posts: 11,730
Rewards Points: 526
Default


Welcome to the forums!

R-5 foam or R-13 cavity insulation is required for your location, per Code. Though I'd take that with a grain of salt... your coldest 3 months average temp is 52*F above-grade. 6' below-grade the earth is warmer at 62*F. depends on inspection or not... . Could just add some builders paper and fiberglass batt on the lower 1/2;http://www.diychatroom.com/f103/usin...362354/index2/

Fix any visible water signs/problems first.

Gary
__________________
If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent.
17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?
Gary in WA is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


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
new knee wall in existing cathedral ceiling rtoni Building & Construction 0 07-16-2013 04:52 PM
Mounting 60" LCD to thin concrete wall flatblackstrat Concrete, Stone & Masonry 7 02-18-2013 07:21 PM
Hydronic baseboard mounted to concrete wall Maine1 Remodeling 20 12-26-2012 06:08 AM
Converting Attic Knee Wall Space to Insulated Closet gigascott Building & Construction 7 01-20-2011 10:08 AM
Does the bottom half of basement wall has to be insulated? Johnny Ren Building & Construction 29 12-16-2010 09:18 PM




Top of Page | View New Posts