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Thread: Need to repair spa dam wall

  1. Back To Top    #1

    Join Date
    May 2007
    Round Rock, TX

    Need to repair spa dam wall

    My spa spills over into my pool. Currently it is constructed with 8" glass blocks. Four of the blocks have now cracked and get filled with algae. This algae is very difficult to clear up so I'm constantly fighting it.

    I had a pool repair guy come out to look at it. His suggestion is to tear out the glass block and replace it with concrete. The thinking is that the glass blocks broke due to the concrete around them expanding/contracting, which fatigued the glass and it broke. He also says that it has been ~7 years since he built a pool using the glass blocks for the spa wall and spill way. This makes me think that there were issues so they don't build them this way any more.

    Does anyone out there have any experience with this? I'm leaning towards replacing it with concrete, but the cost is ~ 1.75x that of the glass. Of course if the glass breaks again . . .

    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  2. Back To Top    #2

    Join Date
    Apr 2008
    Central Texas

    Re: Need to repair spa dam wall

    My bathroom windows are acrylic "glass" blocks. They look like the real deal, but are made of plastic. Perhaps they wouldn't crack? But I don't know how they would like pool chemicals.
    26,000 Gallon Gunnite IGP
    2 HP Challenger High Head Pump
    60sf Nautilus DE filter
    Polaris 280

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