Patching the cracks in foundation blocks?

Oct 17, 2004 3 Replies
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ZZonka Tonka

My old house was built on hand poured cement blocks. The blocks are two halves held together by wire. They are only one block below grade and high clay content soil. You've heard of floating floors? Well I have a floating foundation. I think the old house was built between 1910…

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I'd like to keep some of the cold air from getting under the house this winter. I've got a lot of cracks and missing mortar between the blocks used for the foundation of my old house. I'm using mortar mix to fill them and finish them. Is there a better way? This seems like it will work but if there is a better way I'm open to suggestions. I'd buy the stuff in a caulking tube but it's going to take a lot and I'd have to buy out Lowe's to get enough to do the job. I'm using the ready mix mortar.



Hi, Expanding spray foam or concrete/masonry sealant? Tony

Umm.... why is your block foundation coming apart?

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