Cover bondo with epoxy?

[Azlo]

Is it possible to use marine bondo then cover it with epoxy such as gluv it? I know any bondo will absorb moisture, including marine bondo. But if you use epoxy to seal the bondo?

 

[chargerboy]

Re: Cover bondo with epoxy?

I know if you use automotive bondo, and it gets wet, it's going to swell and crack your epoxy.

Not sure if marine bondo will do the same?

 

[Azlo]

Re: Cover bondo with epoxy?

I figured that epoxy would seal good enough and keep moisture out to keep it from cracking or swelling.

 

[geedubcpa]

Re: Cover bondo with epoxy?

I used to paint cars and for rust work - I would seal the rust with fiberglass resin, apply bondo, then apply a top coat of fiberglass.

 

[chargerboy]

Re: Cover bondo with epoxy?

That's a good idea, I took a course at the college for rust repair, they taught us a different method of fiberglass first, bondo, and then mix the bondo with resin for the top coat, apparently this helps seal it as well, and the thinned bondo makes for an amazing smooth finish, free of air bubbles.