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Our slab foundation is 2.5 years old and Im seeing various small pits in the garage and patio like in the photo. Is this a concern with the structure of the foundation itself? There’s also some pretty extensive cracks in the garage but I’ve always been told not to worry about those. enter image description here enter image description here

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  • Does this answer your question? Spalling and Efflorescence
    – isherwood
    May 31, 2023 at 13:41
  • Or this? What is this white powder on my foundation?
    – isherwood
    May 31, 2023 at 13:42
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    Are the pits new or always been there? Pits(of a small/tiny size) usually not a concern except if they are new/developing. Cracks in walls are a concern. Is that a pit in the picture or a lump? Cannot tell from the picture, but probably my eyes are seeing it odd.
    – crip659
    May 31, 2023 at 13:42
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    Maybe pit is a wrong word, but there’s a chunk out of it. Almost like someone dropped a very heavy weight and took a chunk out of it. It’s like it’s decaying in a few places. Also have several long cracks. Let me see if I can add another photo
    – 4Kiki
    May 31, 2023 at 13:52
  • The pits/dents are new developing. Were not there when we closed on the house 2 years ago. They are just starting to appear.
    – 4Kiki
    May 31, 2023 at 13:57

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A few small pits could be attributed to air pockets when the slab was poured or dropping something heavy and pointed on it. You can fill them in with an exopy mix or concrete patch.

The cracks in the garage floor are minor at this time. Keep an eye on them.

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