4300 Gallon Plywood Build (3600+ Take 2)

[fishbum]

Funny, he says the wife is fine...

http://www.monsterfishkeepers.com/f...e-sale-EVERYTHING-must-go-Pick-up-Ankeny-Iowa

She is fine. Once again your speaking of something you know nothing about.

Seriously, when was the last time your wife went to the dentist? I can find the pic of the train wreck of a smile she has if I need to.

And referring to women as "the wife" is the most neanderthal thing a guy can say. Good job.

 

[nolapete]

Plan

1) Sheath the front wall around the window (not the part that jogs around the house support beams) with 1/4 sanded plywood.

2) Sheathing will be glued with Liquid Nails in place. We can use drywall screws to secure it.

3) Coat the new sheathing with Max ACR epoxy resin and fiberglass matt.

4) Run a bead of Dow 795 in the corners where the sheathing meets the Permadri Rubber Coat coated walls.

Any concerns?

 

[Ozkar]

One concern, I have not used Permadri, but how sure are you about the Dow 795 bonding to both the MaxACR and the Permadri? I thought silicone products like the Dow 795 did not adhere very well to rubber, which the Permadri is very similar to. I could be wrong on this, but you should research or test it first.

Here is an example using my own experience: I found GE silicone 1 adheres VERY well to PondShield epoxy dry, only to have it fail and peel off after being under water for a little while. So you may want to do a small scale test using the appropriate materials and check it under water.

My 3000 gallon build using PondShield on wood only lasted 4 years. I am considering Permadri for my rebuild, so I am very interested in your experiences and hopefully success with that product.

Good luck Pete.


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[nolapete]

Dow 795 bonds very well to Permadri in my experience.

I'm considering pulling off the 2x6 frame from behind the window in order to make sheathing the front wall easier. I don't really like the way it partially impairs the view into the tank. I think it will look cleaner and remove all the screws that punctured the original sheathing. I'm hesitant because the Dow 795 bonds to Permadri so well. I guess if I take it off I'll find out how well.

Thoughts?

 

[nolapete]

Ozkar this may be an obvious question and answer, but did you sand the Pond Shield where you applied the silicone?

 

[Ozkar]

I dont know for sure. That was 4 years ago. I knew at the time to sand the surface to give it some bite, but could I have neglected to do that where the silicone peeled off? Yes, its possible. Good point.

Is there any sanding necessary or other prep for using the Dow 795 on the Permadri?

Did you have to do anything between coats of Permadri?

One piece of advice I will recommend is to definately use fiberglass cloth in the seams, joints, and corners when using the MAXACR, PondShield, and similar epoxy products.


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[blacktarotannis]

Omg so excited..... Go Pete.... I'm going to pick up some sand for my tank. What are you going to use for yours? Sand or gravel... Maybe river rocks? If you has said it... That was pages ago lol.. I'm still pulling for you!

 

[nolapete]

Nope, no sanding with Dow 795 and Permadri. Both are rubber. As you might know, Dow 795 doesn't cure the same method as regular silicone. There's virtually no smell to it at all.

You don't have to do anything between coats other than give it a little time to tack up (couple hours or so).

Don't know for sure on the substrate. Sand would be nice for some rays, but I'll have to be sure to have a settling trap on the intake plumbing.

 

[stempy]

As you might know, Dow 795 doesn't cure the same method as regular silicone. There's virtually no smell to it at all.

No smell at all just takes damn near a month to fully cure :/ Really good stuff.

 

[nolapete]

Cure time is actually 7-14 days. Full adhesion 21, so that's what you must be referring to.