How To Repair Sheet Metal With Fiberglass

Add catalyst or hardener and mix the resin as instructed.

How to repair sheet metal with fiberglass. Grind the area of the metal that will be getting fiberglass applied to it using an air grinder. Measure mix and apply your resin once your patch materials are prepared pre weigh the reinforcement schedule. Keep applying layers of cloth pieces and resin until the area is repaired completely. Scuff the entire area removing any loose.

Thoroughly clean the area until the rag no. Then place a piece of fiberglass cloth onto the damaged spot and saturate it with the mixed resin. The resin should cover the area that extends 2 to 3 inches beyond repair. I used a piece of pvc pipe a vice mount miniature metal break and body hammer kit.

Use the paintbrush to apply a coat of mixed resin on the damaged area. This seals the fiberglass much like a gel coat for a factory perfect finish. Wipe the ground area of the metal clean with a rag and acetone. 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.

One extra step should be taken which is to use a sprayable polyester primer. I then used the templates to trace out the patch panels on some sheet metal. Sanding the repair smooth and then using a body filler and high build primer to finish it.