How To Fix Thermal Break In Cinder Blocks - Carpentry - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 07-14-2011, 06:53 PM   #1
Join Date: Feb 2010
Location: Minnesota
Posts: 16
Rewards Points: 10

How to fix thermal break in cinder blocks

I removed some old brick from the front of my house and found open cinder blocks underneith. I'm affraid this is a thermal break so I 'd like to fill it, but I'm wondering if I could pour some sort of insulation in them (like polystyrene beads) then put some concrete over it to cap it off? The holes look like they go about 4 feet deep. Any thoughts?


Last edited by tsg234; 07-14-2011 at 06:56 PM.
tsg234 is offline   Reply With Quote
Old 07-15-2011, 12:01 PM   #2
Mold!! Let's kill it!
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,849
Rewards Points: 2,012

How to fix thermal break in cinder blocks

You could. It's not really a thermal break. More like an air infiltration issue. The styrofoam will stop some air convection through the cores, but won't really insulate much. I trust you're going to put the brick back into place. If so, you may want to look at putting a through-wall flashing on top of the block to prevent any moisture or condensation from reaching the framed wall along with some weeps on the bottom course of brick.


Maintenance 6 is offline   Reply With Quote
Old 07-15-2011, 12:32 PM   #3
AGWhitehouse's Avatar
Join Date: Jul 2011
Posts: 1,378
Rewards Points: 500

How to fix thermal break in cinder blocks

The block itself is the thermal break. Filling the cores won't remedy that, it may help thermal efficiency slightly though. If you want really insulate this wall and removal thermal breaks then rigid foam sheathing is the way to go...
AGWhitehouse is offline   Reply With Quote

insulation , thermal break

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
Can cinder blocks be ground and used for gravel drive? Bill007 Building & Construction 3 06-20-2011 09:55 AM
How to prevent cinder blocks from "popping out" Red Squirrel Building & Construction 4 03-21-2010 09:11 PM
heat loss through hollow cinder blocks diy4life Building & Construction 11 11-19-2009 10:37 AM
cinder blocks under tub? Leoskee Building & Construction 8 09-03-2009 04:52 PM
Filling concrete cinder blocks Clutchcargo Building & Construction 7 07-25-2008 06:54 AM

Top of Page | View New Posts