The Stovebolt Site Forums The Shop Area Paint and Body Shop Fiberglass for rust repair?

I've got a little rust hole right under my pass side windshield that I want to fix. Ideally I would like to try to weld a patch in from the back but don't want to get that complicated right now. I plan to do a frame off on my truck one of these days and do everything right. For now I want to get it watertight and stop all the rust I can. I got pretty good working with fiberglass rebuilding and old boat a while back and am thinking about making the repair with f/g for now. Question is, should I prime with Zerorust before applying the f/g or apply to bare metal?

I saw an artical in one of the classic truck mags, They were introducing a patch glue on a 57 door. That looks like a good alturnative. Ask local body shops about it. They put the glue on then just stuck the patch on to cover the speaker hole hacked into the door, then just bondoed it up. Lot o luck. I looked for the artical but can't find it.

Fiberglass will adhere better to naked steel than primer or paint. Clean it up, slap some 'glass in the hole, then smooth it out. Shoot the primer over everything at once and it should be nearly invisible.

IMO...I wouldnt glass it. It'll come right back and probably be an uglier spot than before. The "glue" you were talking about is used from the factory on few cars and would work better. **** uses "Fusor" on thier vans and suv's to hold the roofs on! You should be able to buy it at any local body shop supply store.

fiberglass will work just fine if it is properly preped and ir you can get rig of mot of the rust and no water and air can get at it

I filled a 3" round hole in my Jeep body with fiberglass and it stood up to the abuse of offroading and physically removing the body from the frame. It was exposed to water on both sides, too. I filled it with resin and mat, then sanded the fiberglass to knock off the mat fibers that were sticking out, and resined a couple more coats on it to seal it up, skimmed bondo on it and painted over it. It held up great. The hole was in the rear fender where someone tried to add a gas tank.