11 Applied Tips: How to Clean a Fiberglass Door

Fiberglass doors have become popular in recent years. To keep it last longer, you need to know how to clean a fiberglass door properly.

Short answer: mix equal amount of vinegar and warm water in a spray bottle. Then, spray the mixture to the door thoroughly. Then, scrub it with a rag. Use an old toothbrush to clean the sticky area. Rinse with plain water and wipe it with a microfiber cloth.

A fiberglass door is a kind of material created by melting small pieces of glass and combining them with resin. The final product is a durable material similar to plastic that can be used to make garage doors as well as most anything else.

Fiberglass is one of the most versatile materials in use throughout the world. It is flexible and can be formed into almost any shape. The purest resin-reinforced fiberglass fabric is used for doors, so it provides good insulation.

If you want to have a door with a unique design and material, a fiberglass door can be considered an alternative that is much more durable and insulating.

However, fiberglass door surfaces can become dirty over time due to environmental factors or from household activities that accidentally make the door gross. Not only that, but if there is too much dirt, it can be difficult to remove.

Wondering how to clean a fiberglass door? On this page, you’ll discover 11 applicable options for polishing and cleaning fiberglass doors in your home.

Why should you use fiberglass doors?


1. It’s durable

Durability is one of the advantages of using fiberglass doors. Since they’re made of strong materials as opposed to wood, they are resistant to termites, rot, and other conditions that could compromise their integrity.

Since fiberglass doors do not have to be replaced as often as wooden doors, they are considered less expensive in the long run.

2. It’s fire-resistant

Fire can cause a lot of damage, and it is necessary to take precautions. When choosing materials for your building’s doors, be aware of the risks associated with them.

One of the advantages that using fiberglass doors is that they can sustain high temperatures and they provide resistance to flames and heat.

3. It’s customizable

Another benefit of using fiberglass doors is that they are customizable.  We may choose the size and color we want for a door, which is something that other materials can’t offer. 

Fiberglass doors come in all different sizes and colors, so you can match them to your walls and interior decor.

How to clean a fiberglass door

1. White vinegar

White vinegar is a great cleaning solution. It disinfects, it’s safe to use around kids and pets, and it is an odor neutralizer. And what’s more important, it is cheap!

Prepare the following materials:

  • a cup of vinegar
  • a cup of water
  • 2 pieces of microfiber cloth
  • old toothbrush

To do this, you first take a cup of white vinegar and mix it with a cup of water. Then, put this mixture into a spray bottle and spray it onto your fiberglass door. Let it sit for five minutes, then wipe it off with a microfiber cloth.

If you find tough stains, use an old toothbrush to scrub off the stain. Next, rinse the residue with plain water. Last, wipe the wet door with a dry microfiber cloth.

2. Lemon water


Lemon is an excellent tool for cleaning a fiberglass door. Lemons contain citric acid, which aids in the removal of grease and grime. 

Prepare the following materials

  • a lemon
  • 250 ml of water
  • 2 pieces of microfiber cloth

Cut the lemon in halves and put the juice into a spray bottle to clean the yellowed fiberglass door. After that, pour 250 mL of warm water over them and gently shake them. Spray the liquid on the door and let it sit for 10 minutes.

Scrub it with a microfiber cloth after that. Use an old toothbrush to remove stubborn spots. Then, with simple water, wash the door. Finally, wipe the door dry with a microfiber cloth.

3. Baking soda


Baking soda is a common element in cleaning products. Grease and other filth may be removed from your fiberglass door with a simple mixture of baking soda and water. This abrasive substance cleans your door’s surface of any grease and debris.

Prepare the following materials:

  • 4 tablespoons of baking soda
  • 4 tablespoons of water
  • a microfiber cloth
  • a scrubbing sponge

Simply fill a container with 4 tablespoons of baking soda, 4 tablespoons of warm water, and a scrubbing sponge. Make sure to wring out the sponge, so that it’s damp but not wet.

Then, just scrub the fiberglass door, and the grease and grime should come right off. Rinse with water and wipe it until dry with a microfiber cloth.

4. Hydrogen Peroxide


You can use a mixture of hydrogen peroxide and water to clean your fiberglass doors.

Prepare the following materials:

  • a cup of hydrogen peroxide
  • 250 ml of water

To make the mixture, you should use one cup of hydrogen peroxide and 250ml water. Then, you should fill a spray bottle with the mixture.

Apply the mixture to the entire door. If you find yellow spots on the door, you should use an old toothbrush to get rid of them. Rinse it with water to clean the residue.

6. Dishwashing liquid

Dishwashing liquid is a good ingredient to clean fiberglass surfaces. This is because it contains surfactants, which make the water wetter and cause them to become more attracted to dirt so that it can lift the dirt off the surface.

Prepare the following materials:

  • dishwashing liquid
  • water

First, add a few drops of dishwashing soap with water in a spray bottle. Shake them well and spray them on the stained fiberglass door. After that, wash the whole door with a microfiber cloth.

If you are finding a yellow stain, use a toothbrush to scrub off it. Next, rinse with plain water to get rid of the soapy effect. Last, wipe with a dry microfiber cloth.

7. Combination of vinegar and baking soda


You can clean a fiberglass door with baking soda and vinegar.

Baking soda is slightly abrasive, but it won’t harm most surfaces. Vinegar creates a slightly acidic environment that’s not friendly to bacteria. Both are natural deodorants as well, so they’re great for getting rid of odors too.

Prepare the following materials:

  • 2 cups of baking soda
  • 1 cup of vinegar
  • 1 cup of water

First, mix one cup of vinegar and 1 cup of water in a spray bottle. Then, spray it on the fiberglass door. Then, using a sponge, apply baking soda to the sponge and wipe it on the door completely.

Wait for 30 minutes to give it time to work on the stains. After that, you can rinse it with water. If you found a stubborn stain on the door, use an old toothbrush to scrub your door before rinsing it.

8. Chemical liquid cleaner

It’s really easy to clean a fiberglass door using a chemical cleaner. In fact, you can even find a chemical cleaner that is safe for a fiberglass door.

This is perfect for anyone who doesn’t have time to manually clean it. Be sure to read the manufacturer’s instructions on how to use it before you use chemical liquid cleaner on your door.

Always wear protective gear when cleaning fiberglass, because you don’t want to risk skin exposure.

9. Combination of baking soda and liquid castile soap

You can clean a fiberglass door with baking soda and castile soap. The combination of these ingredients not only cleans your fiberglass doors but also neutralizes odors.

Prepare the following materials

  • 1 cup baking soda
  • ¼ cup liquid castile soap
  • water
  • a scrubbing sponge
  • a microfiber cloth

To start the cleaning process, mix baking soda and liquid castile soap, and water in a bucket. Make a paste with enough water. After that, soak your scrubbing sponge in the paste and scrub the door with it.

Remove any soap residue by rinsing with water completely. Finally, a dry microfiber towel should be used to wipe it down.

11. Amazing DIY Cleaner

This DIY cleaner is amazing as it gets rid of dirt on fiberglass doors.

Prepare the following materials

  • 2 tablespoons of baking soda
  • 2 tablespoons of vinegar
  • 2 tablespoons of liquid castile soap
  • 2 cups of warm water

You can make your own cleaner at home by combining 2 tablespoons of baking soda, 2 tablespoons of vinegar, t tablespoons of liquid castile soap, and 2 cups of warm water.

Fill a spray container halfway with the mixture and shake vigorously. Spray it on the soiled fiberglass door and wipe it down with a rag.

Scrub the sticky filth with an old toothbrush as well. Finally, give it a good rinse with plain water until it’s completely clean. To finish, dry the door with a microfiber towel.

How to keep your fiberglass door clean


1. Clean it once a week

If you want to keep your fiberglass door clean, remember that it needs to be cleaned regularly. It’s best to clean it at least once a week with a wet sponge or damp cloth.

Regular cleaning will make dirt easier to remove and prevent residue from building up on the surface.

2. Make sure you have good air circulation

The best way to keep fiberglass doors clean is to ensure good air circulation.

It is crucial to prevent mold, mildew, and dirt on the fiberglass door.  The mold and mildew could cause damage to the structural integrity of your door.

Sooner or later, it’ll develop into water damage that might cause more serious problems along with the damage and destruction to your door.


How do you remove stains from a fiberglass door?

When it comes to cleaning the fiberglass doors, vinegar is a great natural cleaning solution. Mix vinegar and water in an equal ratio of 50:50 and spray it on the stains using a spray bottle. Wait about 5 minutes for the mixture to work. After that, you can wipe the door with an old toothbrush in order to remove the vinegar mixture with ease.

What is the best method you clean a fiberglass door?

Dishwashing liquid can be used to clean a fiberglass door. This is safe, cheap, and easy to do. To remove the stains, use a non-abrasive pad or cloth with dishwashing liquid on it. Rub the door gently so that the stains will come off without any damage.


Fiberglass doors offer a combination of beauty and durability that makes them great options in many homes. However, they can collect a variety of stains, which may be hard to get rid of. By following our tips, you can clean fiberglass doors and have them look like new!

  1. White vinegar
  2. Lemon water
  3. Baking soda
  4. Hydrogen peroxide
  5. Dishwashing liquid
  6. Combination of vinegar and baking soda
  7. Chemical liquid cleaner
  8. Combination of baking soda and liquid castile soap

Do not hesitate to leave a comment!