Sealing Hulls.

[fleetmaster]

What method do you use on the inside of your wooden hulls to waterproof them?

[tnt_coastie]

I use epoxy resin on the inside of the hull. I give two to three coats. Has worked good for me so far.

[patmat2350]

I like to waterproof from the OUTSIDE, so's not to have to worry about the inside!
But I've decided that I'll always put fiberglass on the outside, just don't trust a wood hull to stay tight with the big humidty swings I have here. Then a layer of polyurethane on the inside for the occaisonal bit of water.
Pat M

[LtDoc]

fleetmaster,
Sort of depends on what you have and what you are comfortable using. I tend to 'lean' toward epoxy. Not that there's anything wrong with polyurethane, I just never seem to mix it correctly (not to mention not liking the smell!). The only 'biggy' being that if you don't do it before you finish the hull there are going to be some places you just won't be able to reach. ;)
- 'Doc

[retoabcr]

I use 20 minute epoxy with denatured alcohol on inside except where i will attach the 1/32" ply to the frame. The transom area is most important due to it is the lowest part of boat and rot can set in pretty fast. The outside i don't seal till after paint is applied and dried for x amount of time and then seal with low gloss clear coat. I then sand wet with 2000 paper lightly and makes for a smooth surface!

[ooby]

Mix a batch of 45 minute epoxy, then add about 30% Xylol or Xylene to thin it. Works great, and looks super on the interior of a planked hull.

Also have used Interlux, #1026, Clear, especially where there is more than a little plywood, which is its intended application. Dries to a "honey" color.

In both cases, I usually leave the interior "clear" to show the planking.

[Kmot]

Minwax poly:

http://www.minwax.com/products/protective/highbuild.cfm

[fleetmaster]

thanks for the suggestions fellas.think i'll go the thinned epoxy route for ease of obtainment.

[remondo]

stuff called 'sander sealer' helps 'seal' the balsa and strengthens it. I find it in my local hobby shop