Will putting a concrete patio right next to my foundation be damaging to the foundation?
I had a concrete patio put in last summer. They said they were going to be putting in the expansion joint that goes between the patio and the foundation on the house but when they were finished they didn't put it in and told me it wouldn't be necessary. Now after the thaw, (I am in MN), the patio top is chipping away because it shifted along the foundation. Is this going to cause problems for me? I am afraid my foundation may have been weakened by this.
Answer by DR. DIRT
it could be damaging---water will enter the crack between slab and foundation and have no way to get out thus it will keep moving with freezing and thawing --they should have drilled the foundation installed 1" rebar bout 12" apart and bout 12 " deep in foundation slab best thing to do now is to seal the crack with a hydraulic sealant to keep the water out--clean the area real good of all dust and particles,,,then pour sealant in crack,,, to top of patio slab
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