Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I recently bought a non-inflatable, steel frame above ground pool (12 ft diameter, 3 ft depth). I want to set it up on a slab of concrete, but I have a couple of concerns about the wear on the bottom liner of my pool:

  • Joints in my concrete may stretch the liner to fill the joints (under water pressure)
  • Roughness of my concrete may scratch the liner

Are these valid concerns? If so, what type of underlayment should I use? I'm considering 1/2" thick foam insulation, but I'm not sure if that minds getting wet or not. Also, I'm not sure if I can put the legs of my pool on top of it without the legs tearing through over time.

Any suggestions?

share|improve this question
1  
My gut reaction is to use sand, but I'd follow recommendations of the manufacturer of the pool. You'll need to do that if you want any warranty support. –  DA01 May 3 '12 at 21:59
    
@DA01, I'm not that worried about warranty - it's a cheap pool, and the warranty is only 90 days and doesn't cover "water loss". Not a super compelling warranty. –  Eric May 3 '12 at 22:42
1  
Ha! A pool warranty that doesn't include the one thing you don't want a pool to do...leak. ;) Hmm...as for the joints, fill those in with sand. Then maybe a layer of ice and snow roofing barrier or even just roofing felt to smooth out the concrete? –  DA01 May 3 '12 at 23:23
    
@DA01 Thanks for the tip! I think your suggestion would make a good answer if you'd care to add it. –  Eric May 3 '12 at 23:49
add comment

3 Answers 3

up vote 3 down vote accepted

Per request, I'll expand my comment into an answer:

as for the joints in the concrete, I'd use polymeric sand (typically used for locking pavers).

Then the key is to create some sort of smooth pad in between the concrete and the bottom of the pool. Some options:

  • roofing felt (tar paper).
  • Ice and Shield roofing membrane
  • rubber pond liner
  • epoxy (if it's not terribly rough, a few coats of epoxy concrete sealer might smooth it out)
share|improve this answer
add comment

We installed an 18' diameter pool on top of a concrete pad using the 2' x 2' interlocking square foam pieces between the pool and the concrete. It feels great underfoot and the pool has been going strong for 4 years now.

share|improve this answer
add comment

You could use some foam underlayment like used for laminate flooring. It is about 3/16 inch thick, cheap and you can use typar or packing tape to hold the seams. The same train of thought, how about blue vinyl siding insulation. It is 1/4 " thick, 4 ft wide and folds out to about 16 feet. Also pretty cheap.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.