Yes, you can repair fiberglass doors. You can fix these doors if issues like cracks and dents appear.
Fiberglass is a strong and durable material but it is brittle compared to metal. Instead of denting when impacted, fiberglass will fracture or break if hit hard enough. However, when fiberglass cracks or breaks it can easily be repaired and restored to it's original strength.
Auto body filler works for exterior and interior fiberglass doors. Removing nails, doorknobs, latches and other items from fiberglass doors leaves holes and possibly scratches.
Apply a small amount of polishing compound to a soft cloth if the petroleum jelly fails to remove the scratch. Rub the compound into the scratch in a circular motion. Rub your finger over the scratch to assess your progress. Repeat this process several times, or until the scratch disappears.
The biggest advantage of using Bondo over a regular wood filler is the short dry time. Wood filler can take hours to dry and require more than one coat. Bondo dries in less than 30 minutes and only requires one coat! This means more projects in less time.
Every hole in a fiberglass boat is an opportunity for water to invade the core material, but filling open holes with a thickened epoxy resin before either making the holes disappear or before drilling a new hole in the same spot, ensures that any water only meets with epoxy – and that's the end of the road for moisture ...
Sand away all burrs or raised edges on the crack in the fiberglass with sand paper. Cut away larger burrs with a razor blade if necessary. Sand the crack to a smooth edge. If the damage is a hole, bevel sand the edge of the hole with sand paper and cut away the loose shards with a razor blade, if there are any.
Yes, fiberglass doors can dent or scratch if someone really tried. But compared to wooden doors or steel doors, they're much more resistant to things that make doors look old.
The product labeled Minwax High Performance Wood Filler is a great product for what it is designed. It is a two part system like Bondo and even dries grey. It does not come in a tube that can be already cut nor can it dry out. It is harder than wood and lasts years.
Coming in as our number one pick is DAP Plastic Wood. This all-purpose, solvent-based wood filler is formulated with real wood fibers. It looks and acts like actual wood, except once it hardens, it's three times as strong.
Wet-Sanding Scratched Gelcoat
Often very minor scratches and scrapes can be wet-sanded away. Try using 400-grit wet-sanding sandpaper, followed by 600-grit. Always use a sanding block so you don't over-sand one particular spot, and use a gentle, circular motion. If the scuff or scratch disappears, great.
Use boiling water
Simply boil water in a teapot, protect yourself from burns with rubber gloves, and have a pot of cold water on hand. Then, pour the hot water from the teapot over the dent. Before it cools down, pop the dent out from the inside.
Pops-A-Dent saves you money and is the economical alternative to costly dent professionals. Developed and utilized by professional auto-body experts. Unique patent-pending arched bridge design eliminates the chance for additional damage.
Use epoxy filler material to fill the damaged area and bring it flush with the finished surface. Create a silicone mold of the finished surface texture of the door (in this case, a faux wood grain texture) Use the silicone texture mold and casting resin to reproduce the texture over the filled and sanded patch.
You will have to use a bonding filler intended for metal to get this job done right. Auto body fillers are best for repairing metal doors because they are formulated to adhere to metal surfaces.
Take a rubber mallet, or a flat hammer, and with medium force, strike the dent. You should have a hard flat surface behind the opposite direction of the dent to ensure that the dent evens out. Using light to medium force, strike the dent a few times.