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-   -   Patio puddle (https://www.askmehelpdesk.com/showthread.php?t=315825)

  • Feb 10, 2009, 03:05 PM
    remodlr
    Patio puddle
    We had a new patio poured a few months ago. Unfortunately a puddle now appears each time it rains. It is near one of the expansion grooves. Can we drill holes into the expansion groove to drain the water? There is about 2" of sand under the 4" of concrete. Thanks
  • Feb 10, 2009, 06:32 PM
    ballengerb1

    Where do you live and does it hrad freeze in the winter?
  • Feb 11, 2009, 06:36 AM
    remodlr

    Thanks. Dallas TX. It does not freeze very hard here. We do get some below freezing temps overnight, but not usually sustained.
  • Feb 11, 2009, 11:07 AM
    ballengerb1

    OK, good, I was afraid hard freezes would allow water into the base and then heave when it freezes. Drill a 1/4" hole with a start drill or hammer drill.
  • Feb 11, 2009, 09:22 PM
    21boat

    remodlr.

    Just on a side note 2" of sand should never be under a concrete slab. This is why it heaves in the winter the sand doesn't let enough water drain through it and freezes and heaves the Crete. 4 inches of stone is what supposed to be under slabs. Sand is for dry laid paver's with no mortar.

    Signed 21 Boat

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  • Feb 11, 2009, 09:30 PM
    remodlr

    Thanks for info... looks like I'm in the wrong boat and it has already sailed...
  • Feb 11, 2009, 09:59 PM
    ballengerb1

    It is what it is and you got what you got! You can't really change much at this point but I might question the local building inspector to see if your contractors pulled a permit, an inspection and di it all pass. We can't use sand in the midwest because of our weather but Texas may be a different story.

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