Block / Discussions

What is the best way to insulate a concrete block house?

...block foundation or wall, at least in a cold climate. Without insulation, the blocks have been warm all this time, so suddenly being exposed to the freeze / tha...

Posted by kent wardecke Oct. 17, 2020, 11 a.m. Foundation and basement improvements 2 Responses

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

...block basement wall. Moisture issue in spring ( and I suspect fall). We get a lot of people asking about the best way to insulate a cinder block (CMU) foundatio...

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

Can you insulate a concrete block basement walls with only rockwool?

...block and we have 2 sides done with interior plastic membrane to french drain and sump pump, one side exterior waterproofing, and one side with no waterproofing...

Posted by Aarne Valikangas Jan. 1, 2021, 9:22 p.m. Basements improvements 1 Responses

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

...block would not be frozen, it would only be the very exterior, if that, that would be below zero degrees. So for a block wall that has been kept warm for its ...

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

Can you Insulate a cinder block basement foundation with Rockwool?

...blocks) Rockwool comfortboard 80 1.25” to remove few studs and slide behind the framing and fix to CMU wall with concrete nails. Comfortbat in studs tight a...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 6 Responses

How do you improve an old block foundation with no insulation or exterior moisture barrier?

...blocks is not cracked or blocks shifting at all, but read here as well first about what causes frost heave and how to prevent it when buildilng basements . But ...

Posted by Wilhelmina Lange March 11, 2021, 4:19 p.m. Foundation and basement improvements 2 Responses

What is your opinion on filling block foundations with concrete?

...block foundation walls in the basement. We’ve got a minor crack in the grout, and we were advised to fill the block with concrete for strength, in addition to r...

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

How do you fix moisture problems in basement?

...block foundation would it be ok if I put Delta MS against the block foundation then apply the rigind insulation Thanks for your help. Putting a membrane like De...

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

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

...block for seismic resistance and attach the studs to the block. The block walls will basically become a veneer. Can I apply a paint vapor barrier, and which sid...

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

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

...block walls and had no barrior between them. I now am going to put 4 new walls up (same as before 3 exterior, 1 dividing). I use Drylok so far on all the exteri...

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

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

...block home with a 2 foot over hang. I studed my inner wall, I put R13 fiberglass and sheet rock, then on the outside I tared the out side and filled most of the...

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

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

...block (or 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 co...

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

What is the best way to install basement insulation with existing framing?

...block that was coated with Drylok. When we remediated the water, we noticed enough evidence of block discoloration & possible fungus to reconsider how the basem...

Posted by Nick Trotta Sept. 20, 2021, 8:29 p.m. Foundation and basement improvements 7 Responses

Is sealing basement concrete floor against radon a good idea?

Now that I have removed everything from my basement, I have this nice pristine unfinished concrete floor and walls. I have heard of a product called radon bl...

Posted by Tim Hanrahan Sept. 18, 2020, 3:11 a.m. Radon in Homes - Mitigation 3 Responses

Should I insulate my basement ceiling?

...block does get a bit of the white stuff gathering under the paint on the blocks. Thanks in advance If your intention to is just to insulate the ceiling for en...

Posted by Nina Hartt March 21, 2019, 8:23 a.m. Basements improvements 1 Responses

How should I install XPS insulation in a basement?

...block” basement wall that transitions to a course of narrower blocks above grade. An uninsulated rim joist sits on top of the sill plate on the narrower blocks....

Posted by Ken Hunold Dec. 27, 2020, 7:22 p.m. Basements improvements 0 Responses

Should I install a poly moisture barrier before the rigid foam board against a basement wall?

...block wall (to be relocated in a new stud wall later) to make room for the new insulation process. From the block wall inwards I am considering the following ...

Posted by DONandCATHY Crenna Dec. 14, 2020, 2:21 p.m. Basements improvements 3 Responses