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Thread: maybe leak in waterfall - how to seal- silicone or grout?

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    maybe leak in waterfall - how to seal- silicone or grout?

    The waterfall has been off for 2 days now and the pool level is holding fine. A close inspection of the waterfall shows a couple of places where there is heavy enough efflorescence that I think this may be pointing to where water is getting behind the rocks. In both spots, a bit higher, there was a spot or two where the grout between the rocks might be bad. The waterfall only runs about 2 hours normally this time of year and so those spots would have to take a lot of water to make a difference in the pool in a weeks time.

    Now the question is how to seal this. The grout between the rocks is colored brownish. The pool builder says it is "chocolate" color but I cannot find that concrete/grout color at Home Depot. I got some "brown" but We do have grout in a tube, not sure what color, maybe just grey. In order to use this grout in a tube I guess I need to chip out some of the grout to make it larger and have a chance to hold on there. Or maybe I just want to use clear silicone caulk? I also have 2 part pool epoxy but it is white, I don't know if the concrete color could be added to that to color it.

    Does anyone have any advice on this?
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    Re: maybe leak in waterfall - how to seal- silicone or grout

    Take some pictures and show us what the waterfall looks like. The best way to seal water out is to make it so that water doesn't want to get in. For example a roof is not water proof but doesn't leak since the shingles are overlapped and the water comes from above. Regardless it may be an expensive fix but plast-aid can be tinted to any color with acrylic paint.
    -Kevin
    X-Pert Pool Service
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    X-Pert Pool on Facebook and @XPertPoolServic on Twitter
    22,000 gal / 16' x 32' / Vinyl / Hayward s244t /Pentair SuperFlo 1 hp

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    Re: maybe leak in waterfall - how to seal- silicone or grout

    I can do that. Tonight I am doing a bucket test while running the waterfall for 14 hours to simulate a week of normal operation.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    Join Date
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    Buckeye, AZ 85326
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    Re: maybe leak in waterfall - how to seal- silicone or grout

    Does efflorescence always point to a leak? I have some around my sheer descent.
    TIA
    11,872 Gallon IG Shotcrete play pool
    Blue Granite Pebble Sheen finish
    Hayward SwimClear c4025, Navigator & Tristar 1.75hp pump
    2' Powerfall

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    Re: maybe leak in waterfall - how to seal- silicone or grout

    Quote Originally Posted by Shane1
    Does efflorescence always point to a leak? I have some around my sheer descent.
    TIA
    My understanding is that it is a sign that water is seeping through the rock.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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