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re: How to fill in chips in concrete from Demolition hammer ?

Posted on 10/19/17 at 12:06 pm to
Posted by TU Rob
Birmingham
Member since Nov 2008
12782 posts
Posted on 10/19/17 at 12:06 pm to
quote:

just like 1/4 to 1/2 inch chips that are maybe 4x4 inches at the biggest


I would just lay some thinset in there, scrape it level, and let it harden overnight. Then place new tile over that. What is the sub flooring like? Is it on a slab, or is it on a 2nd level where there is a concrete backer? When we did renovations a few years back, I laid tile on my second floor and had some issues like this. Obviously we did a whole tear out so I ended up using hardibacker to make sure it was all level. If you're on a slab then thinset is probably fine.
Posted by fishfighter
RIP
Member since Apr 2008
40026 posts
Posted on 10/19/17 at 12:11 pm to
Thinset is weak. Get a small bag of concrete floor leveler. Mix small batches and fill in the holes. It dries very fast.
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