Undercoat question...

[Arne]

I think roof tar is the product of choice because of the perception that stones kicked up by tires won't nick it, as it might paint. Also, it is black, so it won't show dirt.

[Ivar the Red]

I Bondo'ed all the seams and screw holes and then painted on a coat of the black goo.

Is this step necessary? Is there a way other than bondo?

[johnb]

The roof tar process sounds a lot worse than it really is. Just put three coats of the Henry stuff on from Home Depot this Sunday. Dried super fast and was only a little more of a hassle than paint. Some latex gloves and disposable brush and you're good to go.

[planovet]

The roof tar process sounds a lot worse than it really is.

I agree. Like I said, it went on nice and easy. Didn't get any on me either LOL

Is this step necessary? Is there a way other than bondo?

The bondo probably wasn't necessary. But I had some seams that weren't completely true and I wanted a waterproof bottom. It took some extra time but I'm pleased with the results. I know I may be overbuilding but it seems to be common in first time builds. I only see me doing one of these and I want it to be just right.