making plywood waterproof?

High Time 420

Well-Known Member

Oct 22, 2009

• #21

Geozander said:

Use marine ply!

Click to expand...

use that or a 5:1 mix of water and pva glue.

 

torontoone

Well-Known Member

Oct 22, 2009

• #22

for your drain fittings, you need whats called a tank bulkhead fitting.
Lowes and Home Depot doesn't have them, but some plumbing
supplys, and Tractor Supply carry them in 3/4", 1", and 1 1/4" !
Get the 3/4" then get a 3/4"MIP threaded hose bibb at a hardware store.

http://www.tractorsupply.com/agriculture-farming-ranching/pumps-transfer/tank-pump-parts-accessories/tank-bulk-head-fitting-3-4-in--2125602

 

J

JanesGreenFinger

Active Member

Oct 23, 2009

• #23

pond liner it is

whats so special bout the tank bulk head?

 

torontoone

Well-Known Member

Oct 23, 2009

• #24

gives you a drain fitting for your res !

 

J

JanesGreenFinger

Active Member

Oct 23, 2009

• #25

ahh i see now
youve been great help

you wouldnt know anything about bubblponics would you?

 

Fditty00

Well-Known Member

Oct 23, 2009

• #26

I think ur looking for' Wolmanized' its not waterproof but it is treated to resisted rot, mold and all that crap. I built my tables in my griw room out of it.

 

Fditty00

Well-Known Member

Oct 23, 2009

• #27

Or u can get synthetic decking witch is recycled plastic.

 

RobMar

Active Member

Oct 23, 2009

• #28

I'm tellin ya dude. build your box out of plywood then line it with red seal. simple as that.

 

Geozander

Well-Known Member

Oct 24, 2009

• #29

The stuff you paint onto concrete ponds, i think its called g4. Its not toxic to fish. So i would imagine it would not be toxic to your plants.