A paintbrush can be used to work the air out ... houses that do layup fiberglass professionally usually use a applicator that shreds glass fibers and mixes the resin all in one step while ...

Go ahead, grab your safety goggles, choose the right fiberglass epoxy resin, and we know you'll be able to do the entire repair yourself. Related: How to Diagnose and Repair a Rotting Wood Fence ...