How To Repair Sheet Metal With Fiberglass

The resin should cover the area that extends 2 to 3 inches beyond repair.

How to repair sheet metal with fiberglass.

This seals the fiberglass much like a gel coat for a factory perfect finish. You should target a 50 50 fiber to resin ratio for your repair so once you have weighed your reinforcements measure out the same weight of resin. Wipe the ground area of the metal clean with a rag and acetone. Grind the area of the metal that will be getting fiberglass applied to it using an air grinder.

Add catalyst or hardener and mix the resin as instructed. One extra step should be taken which is to use a sprayable polyester primer. Thoroughly clean the area until the rag no. I used a piece of pvc pipe a vice mount miniature metal break and body hammer kit.

Keep applying layers of cloth pieces and resin until the area is repaired completely. Sanding the repair smooth and then using a body filler and high build primer to finish it. Scuff the entire area removing any loose. I then used the templates to trace out the patch panels on some sheet metal.

After slicing the patches out with a cutoff wheel next came the bending hammer and dolly session until the patches matched the holes and fit snug and flush into the flanged seat. How to fiberglass over metal. Then place a piece of fiberglass cloth onto the damaged spot and saturate it with the mixed resin.