Roof Coating for sealing a plywood tank??

  • We are currently upgrading MFK. thanks! -neo
As an addendum, Snow Seal is now listed as water potable as well according to the Ames site. You can also buy Maximum Stretch if you'd like to have tan for a color. I think I would prefer tan or grey to white anyday.
 
Well like I told you... I've used it.

"Super Elasto-Barrier is used primarily for roof, wall, and roof deck waterproofing, and is recommended for extreme wet situations such as ponding water."
 
I might still have some posted on a few old websites. Let me go look...

Well I found the old post but sadly my old hosting site is long gone and I never backed up the pictures. The tank is currently in use in Nampa, Id. It painted on well but thinner than i wanted. It was pvc grey in color and completely flat. There was no shine or reflectivity which i really appreciated. If I did it again I would pour the product on whatever side I was working on and spread it. It is a better way to get the thickness they recommend. (about the thicknet of a quarter)

http://www.fishforums.net/index.php?showtopic=66174

That a link to the post i could find, the picture links are long gone. This was done back in November of 2004. Tank still holds water but then of course I went way overboard with coats since they were soo thin and did something like 12 or 15.
 
Gator;2803112; said:
:ROFL: I've heard of Snow seal as many times as I've heard of Kool Seal... Zero. and No one here has ever mentioned the two products before so dont get all high and mighty on me for telling someone not to use a cheap roof coating for fish.

KLee79 again I wouldnt use that stuff for anything to do with fish. it might resist water but its not made to be constantly submerged in water so use it at your own risk. If you cant afford epoxy then use Drylock, that IS a product many people have used with success.

Guess again...
I have commented several time on the kool seal product.

THey have changed there formula or found a way around the ponding problem now.

But lets remember..Ponding is a 24hr type of instance and not continuous.

63300, 63320, 63325, 63600 when used with kool-lastic primer is recommended for ponding water. There is no mention of total and constant immersion in water.


Ames
Super Elasto-Barrier is recommended for extreme wet situations such as ponding water.

Snow Seal® is potable water compliant.

Ames'® Iron Coat is potable water compliant.

Ames' Block & Wall Liquid Rubber will withstand up to 100 P.S.I. water pressures. Is relatively non-toxic to the environment. http://www.amesresearch.com/images/boat/index.htm

Blue Max™ is impervious to water when applied in a uniform and seamless fashion with adequate millage. It can be used as a potable water coating. (I've commented on this one too.)

Drylock is a masonary waterproofer.

Note: none of these are to be used directly on wood.

Epoxy and pin holes...Let cure and wet sand with 600 grit w/d sandpaper, clean and dry completely, then re-coat (if re-coating a third time wet sand second coat).

Some epoxies will 'blush' when submerged for extended periods of time.

There are no "cheap" ways of waterproofing a tank / pond or this question would never have to be asked.;)

Dr Joe

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All of that is good and correct information. However the Ames products state that they can be applied directly to wood in several places. Also, when applied with the primer they bond quite well with wood. Also, The Elasto Barrier, Iron Coat, and Maximum Stretch are all potable compliant.

"Ames Research Laboratories' Super Primer is a unique, elastomeric plastic sealant, primer and adhesive for concrete, tile, rubber, wood, metal, and many hard-to-stick surfaces. It penetrates deeply into the surface to actually bind together the molecules of the surface it is being applied to."

As a show of faith to the idea I will use the Super Primer and Maximum Stretch on my next project. I will be getting the wood tomorrow. I'll create a thread for people to follow. This will be a roughly 100gal setup, nothing extremely massive.
 
Sounds good..this is the kind of information i was looking for. Thanks for all the comments. I know its not cheap to coat tanks for fish use, however, it gets pretty expensive when you have several tanks to coat. Im creating my fish room in the basement and im making several pond like tanks. Just looking for something that is fish safe, long lasting and goes a long way for my money...
 
Instead of trying to find a cheap alternative, save the money and but the something that is fish safe, long lasting (roof patch crap is not long lasting), flexable and submergable.

There are products out there you can use. I havn't done much research but Koi Kote is one product that is offered outside of the US, you might be able to get it shipped over.
 
KLee79;2799608; said:
Cool..i wasnt sure. i know people have used rubber coatings before. Didnt know which ones were safe. Anybody know any other cheaper alternatives to epoxy?? I've used sweetwater and its great, but just too expensive. And im currently trying the boat building epoxy from USComposites.com. I'm pretty positive its safe and its definately cheaper.

I would stick with the 100% resin systems. They are the tried and true approach and if you shop around are priced about the same as some of the elastomeric products I have priced locally. Maybe the stuff linked to in the first post is cheaper but that savings is quickly lost if it has to be applied thicker than other products. In fact I think a few years back that exact point was made on another forum when comparing Elasto-Barrier to epoxy resin. The final cost difference was not all that great.

I really like the epoxy paints like sweetwater but the solvents are really nasty and I'm pretty sure they are too thin to wet out fiberglass, if that is needed for your project. And you can thin out epoxy resin yourself if you think it's necessary for the first coat to penetrate the wood fibers of your build.
 
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