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Build & Remodel

Foundation Question

My Son recently repainted the inside of his home.  During preparation they removed all of the base boards to remove some old wall paper.  In one of the bedrooms in the corner some of the dry wall fell away when they removed the base boards.  We noticed a about a 1/2" gap between the slab and the foundation that runs the length of the wall.  What would cause this, should he be concerned, and how do we repair it.  This was found during repainting so I really don't want to have to pull all of the drywall to fix this gap.  Please help.



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Posted 2012-06-07T18:03:58+0000  by MarkAZ MarkAZ


Hi MarkAZ,

Any crack or gap in a foundation ¼ inch or less can usually be repaired with silicone caulk or epoxy putty.

However any gap ½ wide is a problem to take seriously. Are there any doors or windows in the room that are out of alignment or sticking? Are there cracks in the walls inside or out?

This could be a result of expansive soils, these are soils that expand with moisture and then contract when dry, causing movement in the building and foundation.

My recommendation is to have a foundation repair specialist inspect the gap and give a recommendation as to the needed repairs.

You also may want to contact your insurance company to see if your household insurance will cover the repairs as they could be quite expensive.


The insurance company will have a structural engineer come out to the site, evaluate the situation and make a recommendation.

Don’t wait for more issues to appear, contact your insurance company right away.


Posted 2012-06-07T21:37:42+0000  by Mike_HD_OC
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