Staining a Fiberglass Door

Finishing Fiberglass Doors TIPS

Must Be Clean

The fiberglass door must be perfectly clean to achieve the best results.

You can’t assume the door is clean.

Most oils are clear and you’d have no idea they’re on the surface.

The stain or paint will not bond well if the surface is dirty.

You can do it with a standard soap and water solution such as Top Job, Dawn Dish Soap or any other liquid type soap. Rinse the door with clear water and dry it. The door must be dry before you stain it.

CLICK HERE to get FREE & FAST BIDS from local painters that specialize staining fiberglass doors.

Deep Cleaning

Stain Solver is MADE in the USA with USA ingredients that are food-grade quality. CLICK THE IMAGE to order some NOW.

If you want to deep clean the door removing all mildew, algae, oils, etc. then use Stain Solver.

Stain Solver is made in the USA with USA ingredients. It’s a pure powder you mix with warm water.

Once dissolved, you can brush it onto the door. Work in the shade keeping the door wet with the solution for about 15 minutes.

Follow up cleaning with liquid dish soap solution, rinse well and allow to dry.

Most fiberglass doors allow you to use mineral spirits to clean the door, but never use turpentine! Follow the finishing instructions that come with your door if you have them.

Stain Colors

If you have a new door, look at the stain kit. Most have some sample pieces of fiberglass.

The stain in this kit was specially formulated for fiberglass doors. It’s not NORMAL oil stain for wood. CLICK HERE NOW TO GET THIS AMAZING STAIN KIT.

You use one of these to test the stain color. If you don’t have a scrap, well, you may be out of luck. If the hinge edge is fiberglass (most are), then you can try to sample the color near the bottom of the door on this edge.

Depth Of Color = Time

Stain color can be adjusted by the amount of time you allow the stain to sit on the door / sample before brushing and how much pressure you apply when brushing. If you want a lighter color, let the stain sit for a short while and remove lots of it with the brush.

Do the opposite for a darker look.

Rub in Circles

The stain is applied to the door with a cloth rubbing it in a circular motion. Work from the center of the door to the outer members. Don’t try to do the entire door at once. Work in small areas and feather out stain in overlap portions.

Don’t forget to stain the fiberglass sample. You’ll need this finished as well as the door. You’ll use the sample to test the door for gloss loss due to sun exposure.

CLICK HERE to get FREE & FAST BIDS from local painters that specialize staining fiberglass doors.

Stain Must Be Dry

Most fiberglass stains need 48 hours to dry. You can test for dryness by applying a piece of acrylic painters masking tape to the door or better yet, to the fiberglass sample.

Use this kind of tape to do the *dry-stain* test. CLICK THE IMAGE NOW TO ORDER THIS MAGIC TAPE.

Rub the tape with a piece of wood or knife handle. If the stain is dry the tape will be clean when you pull it off the stained object. If the stain is dry, you are now ready to go to the final steps.

Applying the Top Coat

Here is where many people goof up. The temptation is to apply thick coats of finish to protect the door.

Most fiberglass door manufacturers want you to apply two thin coats.

IMPORTANT TIP: Thick coats will not dry properly. Try to coat the door in a dust-free environment if at all possible.

Milky But Clear

The top coats often look like thin milk.

Don’t panic! If you apply them sparingly they’ll dry crystal clear. Avoid dipping the entire brush in the clear coat. Try to just get the tip of the brush wet.

VERY IMPORTANT TIP: Work quickly and don’t over brush. Apply some in an area and move on.

If you brush back and forth over the same area too much, you can dissolve the stain! Always brush in the direction of the grain! Work from the center of the door out towards the edges.

Don’t forget to apply a clear coat at this time to the fiberglass sample if you have one.

The Second Coat

Follow the instructions on the top coat container. Many will indicate a short drying time of less than 4 hours.

Don’t sand the door after the first coat.

Apply the final coat as you did the first coat. The surfaces normally look wet when you apply a thin coat – not milky.

A milky appearance may be a clue that you are applying too much finish.

Painting a Fiberglass Door

Several readers wrote to me asking if they can paint a fiberglass door. Absolutely!

You paint one as you would any exterior surface. Clean the door with soap and water and allow it to dry.

Use a latex primer matched to a 100 percent acrylic top coat paint.

This is a special paint formulated to BOND to fiberglass. It can be tinted. CLICK THE IMAGE TO ORDER IT NOW.

Remove Weatherstripping

I always like to remove the weather-stripping if at all possible. This allows you to work more quickly and keeps the door from sticking to the weather-stripping.

Keep the weather-stripping out of the door if at all possible for a week to 10 days. This drying time will allow the paint to fully cure and harden. If the paint is tacky it can stick to weather-stripping.

CLICK HERE to get FREE & FAST BIDS from local painters that specialize staining fiberglass doors.

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