Cinderblock pool walls?

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Cinderblock pool walls?

Postby Nancy » Tue 27 Mar, 2007 19:15

I saw a DIY website for building a swimming pool (you can find it yourself if you google swimming pools and cinderblock).

He claims that...

"The pool wall is fabricated out of standard 8" X 8" X 16" cinder blocks as shown. The first course of block is set into a concrete footing and the remaining blocks are stacked, not mortared, 5, 6 or 7 blocks high and filled with rebar and concrete. The pool bottom can be either compacted sand or a more professional perlite and concrete mix. A custom vinyl pool liner, ordered to your exact pool dimensions, attaches to the top of the pool via a track and is cushioned from the concrete block with packing foam. "

We're thinking about building a pool and as you guys all sound like you know your pools, can you answer these questions for us?

Is cinderblock commonly used in the building process for swimming pools?

From an engineering stand point, would this work? Would it be safe?

Thanks kindly for any info you can give us!


Postby Guest » Thu 29 Mar, 2007 14:03

I'm waiting patiently. :)

my pool is block but no liner

Postby nota » Sun 01 Apr, 2007 13:50

my pool is block but no liner solid concrete bottom and filled block walls
the large 38x18 poolwas built in 1955 and they just donot build them like that any more do to costs
we are in miami

Postby Nancy » Sun 01 Apr, 2007 18:57

Thanks Nota
I've done a little research myself and been told that if it's in ground and back-filled with a continuous pour for the floor, it should be fine.
We're not going to put in a liner either, just going to plaster it with a white plaster.

Postby Guest » Mon 02 Apr, 2007 18:53

plan on the plaster cracking in a step pattern that follows the block in about 2 years even if chicken wire and a brown coat are applied. Cinder block pools were not meant to be plastered.

Postby Nancy » Tue 10 Apr, 2007 02:05

Pool User
Is there that much difference between plastering over poured cement and cement cinderblocks? What causes the cracking?

Nota, have you had any problems with the plaster cracking?

Postby lunitcfringe » Thu 12 Apr, 2007 12:28

of course you can build a pool that way-its how it was done decades ago, just like most basements walls used to be cinderblock and most our poured concrete nowadays

sound like you shouled get a few cases of beer and invite your friends over for a pool building party-you can knock it out on a saturday

post pictures when youre done!

Cinderblock pool walls?

Postby dmay85 » Sat 07 Mar, 2009 19:17

So, if I understand you all correctly, cinder block pools are old school but reliable, and notably cheaper that nearly any other in ground option. I am thinking of doing this myslef next year...hire a guy to dig the hole, run the electric, and the rest myself. Is this an example of the industry making something more complicated than it has to be so us mere mortals won't attempt it without all their overpaid help?
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Cinderblock pool walls?

Postby Larry » Sun 08 Mar, 2009 03:22

nota wrote:solid concrete bottom and filled block walls

I think this is the key. Unfilled cinderblock will result in cracking over time and may not provide the absolute durability/ rigidity a pool requires.

Cinderblock pool walls?

Postby funinthesun » Mon 13 Apr, 2009 08:56

i am also attemptimg to do an inground pool with blocks this summer. it is surely a reliable way to construct a pool. i am still in the research steps myself, but i have some things to think about. one being your plumbing and electrical. drilling through filled blocks and rebar is a nightmare, so it is crucial i think to get all your plumbing and fixtures in before you fill the blocks. another thing is your backfill process. to relieve stress on your walls it may be a good idea to have your pool ready for water prior to backfilling the dirt. this gives you an opportunity to test all your plumbing and electrical before it is covered up. also you are able to fill the pool as you fill in the dirt allowing an even pressure to both sides of your walls. this will relieve stress on the walls. as i go further in my project i will update my progress. best of luck in your projects :thumbup:

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