Grouting Pool floor

JohnnyG66

Active member
Jul 7, 2023
42
Ontario, Canada
Pool Size
17870
Surface
Vinyl
Chlorine
Salt Water Generator
Miserable story - I hired a local "pool contractor" to do the pool floor. I usually do pretty much everything myself but didn't want the hassle. Big mistake! The "pool contractor" didn't take a single measurement, didn't run a single string line, and royally f'ed up just about everything. It's a 52" depth flat bottom pool with 42" polymer walls. The sides, per the provided specs, are 45 degrees from one foot out from the walls. He paid no mind to the specs and basically created a bathtub - with sloping coves instead of a sharp 45 degrees. At one foot out, the average depth (it wasn't at all consistent) was 47". Thankfully, he ran out of grout without finishing most of the floor. Then he wanted to charge me double because he needs more grout since it's a "freaking massive" pool! After realizing how messed up it was, I told him to either fix it or get lost. He choose the latter. So I ended up spending the weekend with a jackhammer breaking up about 2' around the entire perimeter of the pool. Part of it were over 6" thick!

Now with that backstory out of the way, my question is this - is there any good reason why I can't (or shouldn't) finish the floor over a few days? Since I'm going to be a one-man show, I'm thinking I'd rather mix mortar on site as needed rather than bring in a truck and be under a ticking clock. Doing a section at a time is more palatable and realistic. Also thinking to do the entire floor flat first, then go back and add the cove. Thoughts and opinions welcome!

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Doing a section at a time should be no problem.

What you are doing is not structural and there are no issues with "cold joints".
 
Finally got all the "bad" parts broken up yesterday so the pile in the middle is now larger. Will be going in with the jackhammer (Hilti TE2000 - love this thing!) to break up the bigger pieces, then some additional smashing with a sledgehammer. Once the pieces are of reasonable size, they'll be tossed over the wall and become part of the backfill.

It's sad because he and his team worked their butts off in hot humid weather - all for nothing! What's the point of putting in the effort if you don't do it right? It was like a Lamborghini Countach moulded by hand out of silly putty.
 
Thoughts on putting the sand/portland mix down dry? I've seen this method mentioned a few times. Would certainly be easier.

Also, understanding that mortar is "rougher" on the liner than vermiculite, is there anything I can put on top of the cement to reduce the friction? Thinking like a sealant, although you might not want that?! How about landscape fabric?
 
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