Terrible Cantilever Concrete Coping on an FRP Pool - Any fixes?

sigma1525

Member
Sep 25, 2024
5
Rhode Island
Hello,

We just installed an inground 12'x25' OKEANOS (Canadian MNFR) Fiberglass Pool with a 4" fiber reinforced concrete pad around it. Unfortunately, because the concrete contractor did not know what he was doing with the Styrofoam forms and did not shape the edges when the concrete was still workable (pliable) we ended up with horrible bull-nose cantilever coping all around the pool. Despite my many calls, emails and text messages to come and shape and smooth the coping edges when the concrete was still workable they showed up 24 hours later when there was not much they could do. However, once they realized they had a problem they tried to fix it with grinders, chisels, jack hammers, etc to no avail (see photos attached)

The Pool Contractor appears to cooperate for now, but he has no solutions. He is bringing in a "expert" concrete cutting contractor to cut, grind and reshape the edges but I don't see how cutting and grinding the edges will help but I would listen to what he has to say. Another solution offered by an "expert" landscaper/hardscaper is to cut and remove a strip of concrete and replace it with coping stones but given the shape of this pool I think it will be very difficult to cut a perfect line parallel to the edges of the pool. Removing the entire pad and redoing it will be an option but that will be expensive and probably very messy.

Please note that even though the concrete pad is not attached to the top FRP plate, the screws installed to hold the Styrofoam forms in place are embeded into the concrete and may damage the Fiberglass plate if they try to remove the perimeter concrete strip or the entire concrete pad.

Has anyone had to:
1. Cut and reshape the edges on cured concrete and what happens to the concrete when the aggregate is exposed adjacent to salt
2. Cut a strip of concrete all around and replace it with coping stones. If yes how did they solve the different thickness of the coping stones and the concrete pad. Was there a problem with the screws damaging the fiberglass plate
3. Totally remove and replace the entire pad
4. Any other solution will be greatly appreciated
Thank you

IMG_20240925_072345299.jpgIMG_20240925_072404870.jpgIMG_20240925_072333143.jpg-1389341611814692755.jpgwater.

2. Cut a strip of concrete all around and replace it with coping stones. If yes how did they solve the different thickness of the coping stones and the concrete pad. Was there a problem with the screws damaging the fiberglass plate

3. Totally remove and replace the entire pad

4. Any other solution will be greatly appreciated

Thank you
 
Welcome to TFP.

Has the Concrete Contractor been paid?

Was the Concrete Contractor a sub-contractor to the Pool Contractor?

Who owns the problem and is responsible for delivering to you an acceptable product?
 
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I think the concrete pad needs to be removed and start over with a different concrete contractor.

I don’t fully understand the screws issue to know how that complicates things. Your Pool Builder needs to figure that out.

How much do you owe your Pool Builder?
 
You described the concrete deck as cantilevered. A cantilevered deck will not be coupled to the pool structure and have a slip joint between the deck and the pool.

The rods and screws embedded in the concrete couple the deck to the pool.

When the deck is demoed they will need to carefully chip the concrete out around the rods and screws. It adds to the time and cost of the demo.


Cantilevered_Coping.png
 
The rods are there to hold the Styrofoam forms. The rods (similar to form ties) will brake when they are twisted but the screws are embeded into the concrete and screwed into the shell and that's my concern. I don't know if they will pull out of the FRP shell or tear it.

Thank you.
 
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