CMU / Discussions

How do you apply vapor barrier and insulation to a CMU house?

...CMUs (aka Cinder block foundations ), are trickier to fix than poured concrete foundations . They are not nearly as strong since it is only the mortar between b...

Posted by Scott Brekke Nov. 22, 2019, 9:37 a.m. Basements improvements 2 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...CMU wall. I was planing on the following assembly : CMU Wall (cinder blocks) Rockwool comfortboard 80 1.25” to remove few studs and slide behind the fra...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

Spray Foam for basements, which of the different types are best environmentally?

...CMU basement walls and floor in northern California. We want to do this basement conversion as sustainably as possible with good air quality and there seem to b...

Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 1 Responses

What insulation should I put on basement block walls that is resistant to mold?

...CMU) foundation wall, I would say the first place to go is this discussion here which I think already answers all your questions - How to insulate a cinder bl...

Posted by Ken Gee July 31, 2019, 3:25 p.m. Basements improvements 4 Responses

What is your opinion on filling block foundations with concrete?

Our house is a little over 100 years old, with a cinderblock foundation walls in the basement. We’ve got a minor crack in the grout, and we were advised to fil...

Posted by Nina Hartt March 21, 2019, 8:06 a.m. Foundation and basement improvements 1 Responses

How would I rectifiy problem of foundation wall cracks with finished basement?

...CMU) foundation wall from the inside in cold climates is risky as it can cause cracking . A cinder block foundation wall is not as strong as poured concrete as ...

Posted by Terry P July 22, 2020, 7:07 p.m. Basements improvements 3 Responses

What is the best practice to insulate a crawl space floor?

Rear porch was was enclosed. Framed walls, insulated and drywalled Crawl space has dirt floor, 3 cement block walls, open lattice wall to access crawl space,...

Posted by austin Fanning March 16, 2020, 8:55 a.m. Crawl spaces 4 Responses

What is the best way to insulate a 1780 brick federal with stone foundation in New York?

...CMU or cinderblock foundation, they are not as strong as a poured concrete foundation and they rely only on the mortar between blocks and stones to hold them to...

Posted by carole roseman Jan. 5, 2020, 2:39 p.m. Foundation and basement improvements 1 Responses

I have many issues with my house where should I start?

...CMU cinder block foundation The best way to insulate a basement to avoid mold How to insulate an attic and avoid ice daming How to install sid...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

Should I vent the space between a block wall and vapor barrier?

I bought my house about a year ago and I recently took out 4 of the exisiting basement walls. 3 of which where exterior and 1 was just dividing the finished ar...

Posted by Nick Santore Oct. 10, 2020, 2:03 a.m. Basements improvements 1 Responses

Why does interior insulation cause a freeze/thaw cycle- cinder block foundation?

...CMUs - concrete masonry units) are more at risk of cracking when insulated on the interior because they no longer have the interior heat to keep them warm. Thin...

Posted by P Mci July 5, 2021, 11:17 p.m. Foundation and basement improvements 1 Responses

Should you put insulation on the outside of a cinder block wall in a desert?

I have a home about 3000 sq. the top is about 1700 and the rest in the basement, being a cinderblock home with a 2 foot over hang. I studed my inner wall, I pu...

Posted by Michael Apodaca March 9, 2020, 3:10 p.m. Wall assemblies - renovation 1 Responses

How do you fix moisture problems in basement?

I am redoing a basement wall that has a lot of moisture and has rotted the studs I see you mentioned to do drywall, studs with mineral wood then 2" of rigid in...

Posted by John rodrigues Nov. 27, 2020, 8:50 a.m. Basements improvements 3 Responses