Fiberglass garage doors are light but strong. The surface is also easy to clean, but the door itself can break if you hit it with a car or tractor. Repairing the doors requires some work and depending on the size of the crack can be extensive. Too much cracks, your best bet is to replace the entire fiberglass panel with a new one directly from the manufacturer. For smaller cracks, a quick and easy fiberglass repairs all you need. Things you need to repair a fiberglass garage doors. Soap, water, sponge, towel, sandpaper, 200 grit, 300 grit, razor, fiberglass repair kit, primer, and also paint.
How to repair a fiberglass garage doors. Clean the damaged area with soap and water and a cloth or sponge. Remove all dirt and grease. Wipe the area completely with a towel. Sand away all degrees or raised edges on the glass fiber glass with sandpaper. Cut out larger degrees with a razor blade if necessary. Sand the crack to a smooth edge. If the damage is a hole, sand the sand edge of the hole with sandpaper and cut off the loose cutters with a razor blade, if any. Cut fiberglass sheets to fit over the hole or damage as needed. Small cracks with some spaces do not need fiberglass sheets but large holes wider than an inch will.
Then to repair a fiberglass garage doors. Mix the base and hardener in a container and apply it to the blades. Place the sheets over the area of the damage and allow the resin to cure completely. It can take up to 24 hours depending on the climate and the amount of hardeners used in plastic. Or, for small holes simply apply resinous compound over the damaged area and let it cure. Finally to repair a fiberglass garage doors. Release repair to match the rest of the door using 200 sandpaper. Wipe the grind with a towel. Apply fiberglass primer for repair. Leave this dry and apply the coating to the repair area. If necessary, paint the entire panel of the garage door with matching cover color, exterior color.