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Thread: Gunite pool floated up

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    Gunite pool floated up

    My gunite pool "floated up" approx a foot. It looks bad. My pool contractor wants to drill holes and see if it will settle back down. What are the chances this will work and not have any problems with the pool in the future? Several tiles have come off, several cracks with ground water slowly seaping thru, pool has separated from cement surounding the pool (this has cracked also).
    IG 18 x 36 Gunite/White Marcite, Approx. 21,000 gallons, Triton II Sand filter 24 SM TR60, Hayward superpump 1.5HP,
    Cell Intellichlor IC40

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    Mod Squad Bama Rambler's Avatar
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    Re: Gunite pool floated up

    The number one question is, was it full of water when it floated?

    There is a chance that it'll work but there's also a chance that it won't. It's worth a try at least. If it does work he can install a hydrostatic valve that should stop it from happneing again. There should have been one there to begin with.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    linen's Avatar
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    Re: Gunite pool floated up

    Sorry to here that crafty

    Any chance you have a picture you could show us? I heard of this happening but have never seen it.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Gunite pool floated up

    There was very little water in the deep end, we were having it resurfaced so it was drained.
    I have pictures but i could not get it to upload on here. I think they were to big. If I can figure out how to make them smaller, I will try and put one on here.
    IG 18 x 36 Gunite/White Marcite, Approx. 21,000 gallons, Triton II Sand filter 24 SM TR60, Hayward superpump 1.5HP,
    Cell Intellichlor IC40

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    Re: Gunite pool floated up

    Sorry to hear about your pool. IMHO I seriously doubt that drilling holes now will make a lick of difference. I saw this happen once before to our old neighborhood pool and it never moved back down after they punched holes in the bottom. Plus all of the plumbing was destroyed when it came out of the ground. Granted it did come out a good three feet on the deep end since it was over 9 feet deep. Good luck and let us know what happens.
    Approx 11K Gal. 10'X30' Semi free-form IG - 6 ' raised spa w/6 jets - 10' circle sun shelf with 1 bubbler - Waterfall - 3 / 1.5 HP pumps - Polaris 280 Cleaner - 3 Pentair Color LED Intellibrite Lights - Pentair 400K Master Temp - 2 Valve Actuators - 5 Fiberstar Mini Laminars - 1 Fiberstars 2004 Illuminator - 2 Skimmers - 6 Returns - Caribbean Blue Pebble Tech - 600+ sq ft kool decK - Auto Fill - 2 Boston Acoustics VOYA RK5 Outdoor Rock Speakers - 2 TIC Corporation TFS5CN 6.5-Inch 150-Watt Terra-Forms Rock Speakers - Apple Airport Express - 1 Awesome View.

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    linen's Avatar
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    Re: Gunite pool floated up

    Quote Originally Posted by crafty33
    I have pictures but i could not get it to upload on here. I think they were to big. If I can figure out how to make them smaller, I will try and put one on here.
    You can post your pics to Photobucket or similar hosting site and link them here.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Gunite pool floated up

    Sorry to hear
    One thing to keep in mind if the pool contractor can't fix it and he doesn't warrantee the pool you might be able to claim it on your insurance?
    18' x 33' Aqua leader AGP (~19k gal) w/hayward swimpro voyager cartridge filter and 2hp hayward pump.
    8 Gal LQ, hayward heater.

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    Re: Gunite pool floated up

    How long ago was your pool installed? And WAS there any type of warranty offered?

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    Re: Gunite pool floated up

    Ykes! All I can say is this sucks! Good Luck!

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    Re: Gunite pool floated up

    I'm very worried about this happening with my replaster job in Thursday. Did he have liability insurance? Is he covering the fix?
    IG Gunnite Pool Size: 25K gallons (20 x 40, 3'6" to 6" depth) with 2 huge Baker Hydro cartridge filters under the skimmer baskets on the suction side, 2 mech timers
    BRAND NEW PLASTER! Quartzscapes/Diamondbrite, Newer Polaris 280, Brand New Hayward Maxflo VS, Brand New Pentair Intelichlor
    I will conquer the black algae this pool season!!!

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    Lershac's Avatar
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    Re: Gunite pool floated up

    Wow that sucks. From talking to a soil engineer last year about this issue, I dont think you will see it go back down significantly. Usually soil shifts and keeps it from returning to the correct position and orientation.

    His approach was to dig a drywell near the pool, see where it settled to, then excavate/mudjack to try to get it level. Then do what you can cosmetically to make it livable.

    I would cry and curl into a ball.
    (DIY):16K Gal 20X30 rectangular IG Gunite, w/spa, CCP 520 filter,2 Pentair VS pumps, 400KBTU Pentair gas heater, Heat Pump for cooling, **update5.25.2013** added an intellichem with acid pump that will control existing SWG. My Build Thread Here

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    Re: Gunite pool floated up

    I put some photos on photobucket and here is the link, I think. password Floating pool
    http://s1147.photobucket.com/albums/o555/crafty33/Pool/

    So far the company is taking responsibilty, I am just worried that since it has shifted/raised the intergity of the structure has been compromised. They did come by and drill hole(s) and it has gone down some. The 1st and 3rd pictures (at least the order I see them in) show after they drilled the holes and it going down. I am also worried about the small cracks on shallow end letting in small amount of gound water. There is pictures of this too but will be hard to see crack, can see wets spots.

    Let me know if link does not work and any thoughts on future problems.
    IG 18 x 36 Gunite/White Marcite, Approx. 21,000 gallons, Triton II Sand filter 24 SM TR60, Hayward superpump 1.5HP,
    Cell Intellichlor IC40

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    Re: Gunite pool floated up

    Quote Originally Posted by mrswhitsie
    I'm very worried about this happening with my replaster job in Thursday. Did he have liability insurance? Is he covering the fix?

    Mrswhitsie, I am not too far from you, so you may not want to do it yourself.
    IG 18 x 36 Gunite/White Marcite, Approx. 21,000 gallons, Triton II Sand filter 24 SM TR60, Hayward superpump 1.5HP,
    Cell Intellichlor IC40

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    Re: Gunite pool floated up

    password is: floatingpool
    IG 18 x 36 Gunite/White Marcite, Approx. 21,000 gallons, Triton II Sand filter 24 SM TR60, Hayward superpump 1.5HP,
    Cell Intellichlor IC40

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    Re: Gunite pool floated up

    You might want to consult with a geotechnical engineer. This is unlikely to be resolved by drilling a few holes in the bottom to try to sink it back down. It might go down a little, but probably not back to where it was. I would think that the following might need to be done:

    1) Add well points to control the groundwater.
    2) Redo all plumbing, including the light conduit.
    3) Remove decking as needed and replace.
    4) Cut out some of the bond beam and replace as needed.
    5) Remove and reset all tile.
    6) Epoxy inject cracks.

    If you have a main drain, it is probably lost, and not worth fixing. The pool might have to end up being higher, which would mean replacing all decking to get the correct slope on the decking.

    This kind of float puts a lot of stress on the transition from the deep end to the shallow end because the deep end is being pushed up and the shallow end is not. The pool might end up cracking across the transition line at some point.

    You might be able to fill the pool while pumping out the groundwater to get it to go back down. However, I think that consulting an engineer is necessary in this case to get a professional evaluation.

    How deep is the water table?

    Is the contractor doing anything to manage the groundwater?

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    Gunite pool floated up

    Good to hear they are taking care of it, at least they are not running off on you. Sounds like a reputable co.
    be sure to let them know you want that hydrostatic valve installed when repaired but chances are they will be installing after this. I would think that could be installed fairly easily now that it's going to be repaired and all.
    Let us know how it goes
    18' x 33' Aqua leader AGP (~19k gal) w/hayward swimpro voyager cartridge filter and 2hp hayward pump.
    8 Gal LQ, hayward heater.

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    linen's Avatar
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    Re: Gunite pool floated up

    Crafty, thanks for the pics...wow, I have not seen that before. I hope it gets resolved quickly.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Lershac's Avatar
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    Re: Gunite pool floated up

    Holy cow. And to think for a couple of hundred bucks (a drywell) this could have been avoided. Way down the line when its time to replaster, I will put TWO in.
    (DIY):16K Gal 20X30 rectangular IG Gunite, w/spa, CCP 520 filter,2 Pentair VS pumps, 400KBTU Pentair gas heater, Heat Pump for cooling, **update5.25.2013** added an intellichem with acid pump that will control existing SWG. My Build Thread Here

  19. Back To Top    #19

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    Re: Gunite pool floated up

    Whoa!

  20. Back To Top    #20

    Re: Gunite pool floated up

    Concrete Pool Floated.

    Was it under construction, or being emptied?

    Not to sure about things in the USA but we install what is called a Grease Trap Hydrostatic Valve in our pools most engineers on there drawing say to install it however some builders use a small bottom drain with a small about 2 in flap valve and of course tilers use the little bit of water in the sump to wash up their tools, which blocks it and up floats the pool.

    I have seen several attempts to lower the pool back down not always a success, as for drilling holes the best thing to try is to de-water all the water from under the pool and full it up it may take it back down, sinking it drilling holes wont help one bit. Even then you may have to re-tile because it wont be level, you said it was cracked, inject the cracks with Epoxy Grout under high pressure you may get lucky

    So in the short term your builder seams to have tried to save about $100.00 and done a shoddy job. IF HE HAD DONE HIS JOB RIGHT IT WOULD NOT HAVE FLOATED.

    Sometimes it is covered by you house insurance but from my experience 30 years plus cut it out and start again.

    Kiwi Norman.

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