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Old 11-03-2008, 10:40 PM   #1
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Waterproof cement


I want to put an old dead hot tub in the ground and cement over it and make a pond.

Any ideas?

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Old 11-03-2008, 10:48 PM   #2
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What is the tub made of and does it or will it leak?

That is a noble thought to try to recycle one thing for a different use, but it might be better to sell the old tub and start from scratch (cheaper and faster).

The important thing is what you do to prevent leaks, especially if you have a variable climate or soil moisture/expansion problems.

Dick

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Old 11-03-2008, 10:55 PM   #3
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Originally Posted by concretemasonry View Post
What is the tub made of and does it or will it leak?

That is a noble thought to try to recycle one thing for a different use, but it might be better to sell the old tub and start from scratch (cheaper and faster).

The important thing is what you do to prevent leaks, especially if you have a variable climate or soil moisture/expansion problems.

Dick
Can't sell it. Doesn't work and I ripped the guts out of it.

It could leak after the weight of the cement gets on it.

I could use some mortar and use that to put in some rocks. My wife loves river rock. But it would have to be somewhat waterproof.
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Old 11-04-2008, 09:07 AM   #4
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wish you were closer,,, would save me time/trouble of building my own from icf's & polymer-mod'd cement,,, do you deliver ? ? ?

not sure i understand, marv,,, why not just bury it & backfill w/sand ? ? ? work and I ripped the guts out of it.

seal the outlets/inlets & paint it blue,,, wimmin LOVE blue ponds.
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Old 11-04-2008, 10:23 AM   #5
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wish you were closer,,, would save me time/trouble of building my own from icf's & polymer-mod'd cement,,, do you deliver ? ? ?

not sure i understand, marv,,, why not just bury it & backfill w/sand ? ? ? work and I ripped the guts out of it.

seal the outlets/inlets & paint it blue,,, wimmin LOVE blue ponds.
It's already in the ground. I backfilled it with sand. And it is blue. The holes are sealed.

It just doesn't look natural.

I thought about gunite but that is too expensive.

So I figured that I would just make up some concrete and put it on and use some mesh to hold the concrete in till it sets.

I guess it really doesn't matter if it leaks since it is water tight at the fiberglass. But for added protection water tight would be nice. I even considered a pond liner and then the concrete.

This is a new area for me and I have no idea what I am doing.
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Old 11-04-2008, 05:29 PM   #6
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I doubt a concrete product would bond to the fiberglass.
Ron
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Old 11-04-2008, 09:33 PM   #7
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ok - if you REALLY want to do it, here's how - d/a the tub to remove glaze then staple expanded wire mesh overlapping & staggering the seams 2",,, this is best done w/either air/elec stapler as you'll need to space them 1" to 2" o/c & i'd hate to have you come back on the forum in 3 months after your carpal tunnel operation :-) next trowel on a 2 coats of polymer-modified concrete which you can buy at any pro const supply house,,, i'd suggest elitecrete but you need a license - might also try surecrete, decosup, stardek, forevercrete, or gawda'mightycrete - there're many mtls out there - sika/sonneborn/l&m/dayton,,, while mixing up the concrete, you can color it w/pigment - either powder or liquid.

ordinarily i wouldn't think an avg h/o-diy-er has the ability to do this but your posts suggest you're not he.

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Last edited by yesitsconcrete; 11-05-2008 at 06:27 AM.
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