Sealing a concrete/ mortor tank?

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da1jewfish

New member
How can you seal a concrete tank? Its about a 1000 gallons in wall setup, its a friends. It hasn't been setup in a year and he's looking to set it up again. Problem was it leaked through the concrete walls. So, he's lookin for a definintive way to seal it and if possible a cost efficient way. I am pretty sure its concrete although some is mortor too. Can I use some kind of marine epoxy or I read (fiber glass resin?) and use it like paint to seal the bottom and side walls? I have done many searches but only found minimal info.
Any help wil be appreciated.
 
Almost every post I've seen about a concrete tank has had a problem sealing it even after they thought they had , it leaked later. The product I've seen them use is fiberglass coating the entire inside i've also seen 2 part marine epoxy . Dryloc and some other type of material made by sanitred.
 
Thanks for the info!
as far as the front acrylic, it is a great question cause he doesn't know eithier. He bought this house with this in it kinda as a bonus, but it needs work. And the acrylic piece is no longer attached and sitting outside the house... so that's another project.

So even after sealing it with either the marine epoxy or fiberglass, it sill leaks? There's got to be something. That G4 that pixelpixi recommends looks like it will work good, as long as it is safe for marine water.
Found this- http://www.seal-once.com/htmls/faq.html#mildew

On second thought I am looking for products that have been used with success,as I don't have the time or oney to "try" products. So for those who have I would appreciate it. Also, if you have any links on this subject.
 
I have seen the Sanitred fail in another forum on a cinder block and mortar build. I have no idea if it was installed correctly but the owner said it was installed to there specifications.
 
That stuff liveforphysics suggested would likely work well. I once checked it out but was derailed by the issues of actually trying to get my hands on any.

Bed liner material is often suggested. I will be using this stuff on my tank, inside and out. Sprayed on hot, it's used to line drinking water tanks.
http://www.line-x.com/

I would suggest calling the local dealer and seeing if it's a portable process. I would think so, as they would have problems remedially doing typical water tanks if the tanks had to be brought in, but I don't know.

Once they line the tank you would just re-silicone the window back in.

This "house" you speak of sounds very familiar... We saw one exactly as you've described that was built up with a 4 sided concrete tank thru one wall. With little testing it was fully stocked up and run. It developed several leaks in a few weeks, and after fighting them, unsuccessfully, for about a month, the guy completely pulled the plug, and just left it dry.
 
<a href=showthread.php?s=&postid=13260999#post13260999 target=_blank>Originally posted</a> by kcress
That stuff liveforphysics suggested would likely work well. I once checked it out but was derailed by the issues of actually trying to get my hands on any.

Bed liner material is often suggested. I will be using this stuff on my tank, inside and out. Sprayed on hot, it's used to line drinking water tanks.
http://www.line-x.com/

I would suggest calling the local dealer and seeing if it's a portable process. I would think so, as they would have problems remedially doing typical water tanks if the tanks had to be brought in, but I don't know.

Once they line the tank you would just re-silicone the window back in.

This "house" you speak of sounds very familiar... We saw one exactly as you've described that was built up with a 4 sided concrete tank thru one wall. With little testing it was fully stocked up and run. It developed several leaks in a few weeks, and after fighting them, unsuccessfully, for about a month, the guy completely pulled the plug, and just left it dry.
Click to expand...


Yeah, I don't really know the background of it except it has 1 or 2 leaks. Who was fighting who?
So this bed liner is water proof and fish safe too? JUst b/c its used to line drinking water tanks, I don't klnow that it makes it fish safe as well.
Thanks all
 
We have used two part epoxy paint, and now I'm looking at The bedliner material for trucks "rhinoliner". Haven't gotten prices yet, but i'm sure that it would work great, LMk how it comes out. Good luck
 
I once did a construction project where we covered an area the size of a basketball court with plastic.
We installed HUGE sheets of 1/8" think polyethelyne and welded the seams to make a single piece.

I imagine you could line the sides of the tank with the sheets then have a pro weld the seams.

We bought it in rolls that were 10-12 feet wide. I believe we found it at a plastics place that specialized in huge pond (lake) liners.

Something like this place:

http://sandhillplastics.com/sizes.html

Stu
 
<a href=showthread.php?s=&postid=13261210#post13261210 target=_blank>Originally posted</a> by da1jewfish
JUst b/c its used to line drinking water tanks, I don't klnow that it makes it fish safe as well.
Thanks all
Click to expand...

I think it does. I don't think I've ever seen an example of where this wasn't the case. If humans can store water in it then it's not going to leach poison.
 
I would definatly use the Line-X product over the rhinoliner product. They are similar, but the Line-x product is a much better polyurethane (acutally polyurea).
 
thanks for the comments.

ricksreefs... it looks good but it says it resits mildew and mold, I thought we are supposed to avoid using products that do that?.?
 
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