A few notes about Gacoroof:
-Caulk, caulk, caulk & caulk. I expected the product to be a lot thicker then it was so I only caulked the joints and used a wood filler on the screw holes not paying extra close attention thinking the Gacoroof would cover more. I am sure it is completely waterproof but it did not have the esthetic I was looking for especially around the knots in the wood.
- Mask anything you plan to glue later because you will not get this stuff off and based on the surface when it is dry nothing is going to stick to it.
- Buy a HIGH quality roller. The Gacoroof is thicker then paint and very tacky. All the lint from the roller sticks and stays there.
- Don't be put off on calling customer service. It took me a few calls to get through to a person but once I had them on the phone they were great. They answered all of my questions and then some.