Spar urathane Masonite and such deviance.

[Mayne]

I'm still kicking initial ideas around and planning. I'm pretty set on covering my tear in aluminum, and I'm thinking of sealing it with helmsman spar thane. I know there are more high end products, but I'm looking for a seal, not a looker. Any experiance with this product (or something similar) and it's sealing abilities, and what to do to seal Masonite. I'm thinking of doing the outer roof with Masonite, and well.... Sealing it too.

As a side, I would really like to avoid the nasties of epoxy. It's good stuff, albeit pricey, but I just don't know that it's needed?


Thank you fr your time

Mayne

[Steve_Cox]

If you are looking to save money why not use Thompson's Waterseal?

Polyurethane will eventually get brittle and check, and might not have the same expansion/contraction rates as the surface it is applied to. In my experience polyurethane had to be refreshed every couple of years, a little hard to do if it is under aluminum.

[afreegreek]

Kilz Premium sealer/primer... this is awesome stuff.. if you're going to cover it with aluminum you don't need a top coat.. it sticks like hell to just about anything and will hang on even to material that gets very wet.. three coats of it makes almost a rubber or latex like membrane.. it's water clean up, dries pretty quick and is a reasonable price for a high quality product..

http://www.masterchem.com/masterchem/v/ ... 0910acRCRD

[bobhenry]

I have said it 2 dozen times on here...... elastopolymer roof seal !

Good old mobile home roof coat. It goes by many names, Polar seal , kool seal and a dozen other trade names.

It is heavy bodied and you can build coat after coat all in the same session as it touch dries in 10 - 15 minutes. It will stretch and flex without cracking and is fairly inexpensive. Eggbert was built in 07 and I stole his frame in 09 the body has sat in the back yard on the ground since this time. I had reason to move it this spring and couldn't help but notice the entire OSB shell is still in excellent shape despite 3 + years in the weather and setting flat on the ground in rain snow and ice.

I simply can not say enough about this stuff. I am sure it could be tinted with tinting at the paint store or maybe even simpler just add a small bit of latex paint.