Fiberglass doors and sidelights can be smooth or textured with a wood-grain finish. This material usually does not need to be primed, but painting is required. Premium steel doors are factory-primed and should be painted but not stained.
Use a hard topcoat.
Otherwise in hot environments the weatherstripping may stick to softened paint and damage the door. The door's topcoat should be reapplied often — every two years if not exposed to direct sunlight and up to every six months if there is no overhang and a lot of direct sunlight.
The bad news: fiberglass is so durable that it often outlives its own paint job. That means you're likely going to need to have your boat painted or re-painted if you want it to continue looking its best throughout its lifetime.
Fiberglass front doors exposed to strong sunlight should be finished with paint, not stain. Textured front fiberglass doors look better when stained, however, either finish can be used. If your preference is a look of wood rather than fiberglass, staining can be used to accomplish this.
Use acrylic, polyester, polyurethane, or epoxy resin paint on your fiberglass door. Try to pick a paint that matches the type of fiberglass for the best results. Do not use oil-based paints because these can damage the door. Fiberglass-friendly paints are often available in matte, neutral, and gloss finishes.
Fiberglass doors and sidelights can be smooth or textured with a wood-grain finish. This material usually does not need to be primed, but painting is required. Premium steel doors are factory-primed and should be painted but not stained.
If you kick a fiberglass door, it won't dent or ding. Plus, unlike a steel door it looks exactly like wood, and you can stain it (although it's a little more complex than staining a wood door). Even though fiberglass is a bit more expensive, it was actually more affordable than a new wood door with a storm door added.
How do I stain my fiberglass entry door? If a stained wood appearance is desired on wood-grain fiberglass door panels, sidelights and glass frames, apply gel stain and clear finish according to the stain manufacturer's directions. For best results, always apply stain in the direction of the grain.
Available in a wide range of styles, paints and stains, fiberglass can be repainted or stained by do-it-yourselfers in a method similar to painting natural wood. Good surface preparation is the key to any successful paint job, and this applies to fiberglass doors.
Acrylic Latex
Acrylic paint adheres well to fiberglass, overcoming one of the main challenges to painting this material. Acrylic paint is less likely to crack and blister, and will hold up well to cleaning. This water-based paint is easy to apply, and contains fewer chemicals, so is more environmentally friendly.
Fiberglass Exterior Doors
In a reasonably protected location, a fiberglass exterior door will never need painting or staining and can last 15 to 20 years. Although it feels lighter than wood or steel, it is extremely durable and features an extremely durable coating that is difficult to breach.
Fiberglass doors have a much higher resistance to weathering than wood and steel, but exposure to sunlight can fade them, as you have discovered. Depending on the fading, you may be able to patch the stain. Before you paint or stain the surface, clean your door properly.
If your fiberglass door's stain coat is flaking, chipping, or peeling off unevenly, you'll have to remove the layer before applying a fresh stain coat. Re-staining fiberglass doors is a good weekend project.
Use heavily pigmented oil-based stains or gel stains. Dip the brush about an inch into the stain, using the rim of the can to remove excess. Slowly apply the stain using long, even strokes. Rub the stain into the fiberglass with a cheesecloth, using either back-and-forth or circular motions.
To refinish your door, you need to remove the old paint with a water-based stripper, apply a layer of gel stain, add at least two layers of fiberglass top coat, and allow to completely dry. You may use acrylic over your gel stain, as acrylics are known to have longer lifespan.
If you have a drab fiberglass door in your living room, give it a quick, inexpensive facelift. Clean the door to remove grease and dirt. Apply a base coat using either paint or stain. Then use a quality gel stain and a wood-graining tool to create faux wood grain in the door.
Kohltech recommends you use a high quality, UV stabilized, clear exterior polyurethane coating (satin or low gloss) used for exterior fiberglass applications. It is important that you apply sealant once a year to ensure maximum protection.
Fiberglass doors should be wiped clean with a solvent such as acetone or mineral spirits. Allow the cleaning solvent to dry completely – until there is no residual odor. Next, the door must be washed with a mild detergent in warm soapy water, rinsed and then dried.
Cleaning Fiberglass Doors
The best way to clean front doors made of fiberglass is to combine a cup of white vinegar with a gallon of water. Apply the mixture to the door using a soft lint-free cloth or sponge. For stubborn stains, use a soft-bristle scrub brush but be gentle to avoid damaging the surface.
Unlike wood, fiberglass surfaces are nonporous, making them unsuitable for spray paint adhesion. Before you can spray paint any type of fiberglass surface, you will need to employ specific preparation techniques to condition the fiberglass to accept paint, or the finish will peel soon after application.
Rust-Oleum Oil-Based Door Paint is designed to bring great color retention and durable protection for your exterior and interior doors. Ideal for metal, wood and fiberglass doors.