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The problem that you face is external rather than internal in that spalling usually happens where the internal surface freezes but that seems so unlikely

There are a number of epoxy-resins and similar concrete repair products on the market as since I'm in England I can only give you generic keywords to search on

If it is possible, I would advise you to install some sort of land drainage around the property like a gravelled trench to drain away the excess water that settles in the wall That should remove the cause of the spalling

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โˆ™ 2015-07-15 20:52:45
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Q: How do you fix a spalling concrete retainer wall in a bedroom?
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