How to Paint a Fiberglass Door? – Get Your Answer Here

Randy Charles
Professional Painter

Randy Charles is the owner of, a website dedicated to providing information, tips, tricks, and news about all things paint. With over 10 years...Read more

Are you struggling to refresh your worn-out fiberglass door? Painting a fiberglass door is not as complex as it seems.

This article will guide you through the process of painting your fiberglass door, from preparing the surface to applying the final coat.

Keep reading for step-by-step instructions and expert tips that make this task easy and fun!

Preparing the Fiberglass Door for Painting

To prepare the fiberglass door for painting, start by cleaning it thoroughly to remove any dirt or debris.

Next, fill any holes or cracks in the surface using a suitable filler. Then, sand the entire door to create a smooth and even surface for paint application.

Cleaning the door

First, you need to make sure the door is clean. Here are the steps:

  1. Get a bucket of soapy water.
  2. Wet a cloth or sponge in this water.
  3. Rub the door gently with the wet cloth or sponge.
  4. Make sure to clean all parts of the door, even the corners.
  5. Rinse the soap off with clean water.
  6. Dry the door well before you start painting.

Filling holes and cracks

You need to fill holes and cracks in a fiberglass door before painting. Here is how you can do it:

  1. Look at the door. Find any scratches, holes, or cracks.
  2. Buy a kit to fix fiberglass at the store.
  3. Read the box of the kit. Do what it says on there.
  4. Use a knife putty to fill scratches, holes, or cracks with the kit mix.
  5. Let everything dry before you sand it down.
  6. Sand down the area after it dries.
  7. Wipe away dust with a cloth.

Sanding the surface

First, you need to sand the fiberglass door. Here is how you can do that:

  1. Get fine – grit sandpaper. This helps make a smooth surface.
  2. Lightly rub the sandpaper over the whole door.
  3. Make sure to get all spots on the door.
  4. Brush off dust with a dry paintbrush.
  5. Use a wet cloth to wipe down the door after brushing.

Choosing the Right Paint for Fiberglass Doors

When painting a fiberglass door, it is crucial to choose the right type of paint. Acrylic, polyester, polyurethane, and epoxy resin paints are recommended options for fiberglass doors.

The type of paint should be matched to the specific type of fiberglass to ensure optimal adhesion and durability.

Recommended types of paint (acrylic, polyester, polyurethane, epoxy resin)

For painting a fiberglass door, there are various types of paint that you can use. Each one of them brings its own set of features and benefits.

Below is a table detailing the recommended types of paint, namely acrylic, polyester, polyurethane, and epoxy resin.

Type of PaintDescriptionBenefits
AcrylicAcrylic paint is a latex-based paint that’s highly suitable for fiberglass doors. It’s easy to work with and offers a wide range of color choices.Acrylic paint provides a durable finish resistant to chipping and cracks. It is also easy to clean.
PolyesterPolyester paint is usually used in industrial settings and provides a hard and glossy finish.This type of paint is extremely durable and resistant to scratches and impacts.
PolyurethanePolyurethane paint is a type of oil-based paint known for its high-quality finish.It provides a smooth, glossy finish that’s resistant to water and weather damage, making it perfect for exterior doors.
Epoxy ResinEpoxy resin paint is a heavy-duty paint known for its robust and durable finish.It’s hard-wearing and especially resistant to moisture and abrasion, making it a great option for a long-lasting finish.

Remember, while choosing the paint type, consider the condition and location of your door.

For instance, if your door is exposed to harsh weather conditions, opt for a paint type like polyurethane or epoxy resin for their excellent weather resistance.

Matching paint to the type of fiberglass

To achieve the best results when painting a fiberglass door, it’s important to match the paint to the type of fiberglass you’re working with.

There are different types of fiberglass doors available, including smooth or textured wood-grain finishes.

When choosing paint for your fiberglass door, consider using any latex-based paint as it can work well on fiberglass surfaces.

For exterior doors, it’s recommended to use exterior-grade paint for better durability against weather conditions.

Additionally, if you have a pre-primed or previously painted fiberglass door, lightly sanding the surface before painting will help ensure good adhesion and a smoother finish.

Steps to Paint a Fiberglass Door

To paint a fiberglass door, follow these steps: Apply primer to the surface, choose the desired paint color, and carefully paint the door.

Applying primer

Before painting your fiberglass door, it’s important to apply primer. Primer helps the paint adhere better and creates a smooth surface for a professional finish.

Use a latex-based primer that is specifically designed for use on fiberglass surfaces.

Apply the primer evenly using a brush or roller, making sure to cover the entire door. Allow the primer to dry completely before moving on to the next step of choosing your paint color.

Remember, proper priming is essential for achieving lasting and beautiful results when painting your fiberglass door.

Choosing the paint color

When choosing the paint color for your fiberglass door, consider the overall look you want to achieve.

You can go with a classic white, which is versatile and timeless. If you want something more vibrant, consider bold colors like red or blue to make a statement.

Earth tones like beige or brown can create a warm and inviting look. Additionally, consider the style of your home and its surroundings when selecting a paint color for your fiberglass door.

By choosing the right paint color, you can enhance the curb appeal of your home while expressing your personal style.

Painting the door

To paint a fiberglass door, start by applying primer to create a smooth surface for the paint to adhere to.

Use a latex primer specifically designed for fiberglass doors. Once the primer is dry, you can choose your paint color.

Any latex-based exterior paint will work well on a fiberglass door.

When painting the door, it’s best to use either a brush or roller, depending on your preference and the size of the door.

Apply thin coats of paint rather than thick ones to avoid drips and ensure even coverage.

Allow each coat to dry completely before applying another.

Remember, it’s important to follow all manufacturer instructions when it comes to drying time and recommended number of coats.

And don’t forget about maintenance! Regularly inspect your painted fiberglass door for any chipping or scratching and make touch-ups as necessary.

Tips for a Successful Fiberglass Door Painting Project

Use a brush or roller to apply the paint in thin coats, allowing sufficient drying time between each coat.

This will help prevent drips and ensure a smooth finish. Want to learn more about achieving great results when painting your fiberglass door? Keep reading!

Using a brush or roller

To paint a fiberglass door, you can use either a brush or a roller. Both options work well, so it’s up to your personal preference.

If you choose to use a brush, make sure it’s high-quality and designed for smooth surfaces like fiberglass.

Use long, even strokes to apply the paint in thin coats. This will help prevent drips or uneven coverage.

On the other hand, if you prefer using a roller, opt for one with a short nap (the thickness of the fabric).

Roll the paint onto the door using light pressure and back-and-forth motions. Remember to work in small sections at a time to ensure even application.

Whichever method you choose, always follow the manufacturer’s instructions on drying time between coats and how many coats are required for optimal coverage.

Applying thin coats

When painting a fiberglass door, it’s important to apply thin coats of paint. This helps prevent drips, runs, and uneven coverage. Thin coats also dry more quickly, allowing you to apply additional coats sooner.

To achieve thin coats, use a high-quality brush or roller and avoid overloading it with too much paint. Start by applying a light layer of primer and then follow up with thin layers of your chosen paint color.

Allow each coat to dry completely before applying the next one. This will help you achieve a smooth and professional-looking finish on your fiberglass door.

Allowing proper drying time

After you have finished painting your fiberglass door, it’s important to allow enough time for the paint to dry completely.

This ensures a smooth and durable finish. The drying time can vary depending on factors like temperature and humidity.

On average, it may take around 24 hours for the paint to dry completely. Avoid touching or placing any objects on the door during this time to prevent smudging or damage to the paint surface.

To speed up the drying process, you can try keeping the area well-ventilated by opening windows or using fans.

Remember that even after the paint feels dry to touch, it might still be curing underneath. It is advisable to wait at least a few days before subjecting the painted surface to any wear or cleaning activities.

Finishing Touches and Maintenance

To complete the painting process, remove any tape used to protect surrounding areas and ensure a clean finish. Consider applying a clear topcoat to provide added protection against wear and tear.

Remember to regularly maintain and touch up the paint on your fiberglass door for long-lasting results.

Removing tape and protecting the surrounding area

To ensure a clean and professional-looking paint job on your fiberglass door, it’s important to remove any tape used for masking and protect the surrounding areas.

Here are some tips to help you with this final step:

  1. Carefully remove any painter’s tape or masking tape from the door. Peel it back slowly and gently to avoid damaging the freshly painted surface.
  2. Use a utility knife or a sharp blade to cut through any paint that may have seeped under the tape. This will prevent peeling or tearing when removing the tape.
  3. Once the tape is removed, inspect the edges of the painted area for any touch – ups that may be needed. If you spot any imperfections, use a small brush to carefully fix them.
  4. Protect any surfaces adjacent to the door that you want to keep clean by covering them with plastic sheets or drop cloths. This will prevent accidental drips or splatters from ruining other areas.
  • Properly removing tape and protecting surrounding areas helps prevent damage to other surfaces during painting.
  • Using a utility knife can help cut through painted edges for cleaner removal of tape.
  • Inspecting for touch-ups after removing tape ensures a high-quality finish.
  • Covering adjacent surfaces with plastic sheets or drop cloths prevents accidental drips or splatters from damaging other areas.

Applying a clear topcoat for added protection

To give your painted fiberglass door extra protection, you can apply a clear topcoat. This will help to seal the paint and make it more resistant to scratches, UV rays, and weather damage.

A clear topcoat also adds a glossy or satin finish, depending on your preference. Before applying the topcoat, make sure the painted surface is clean and dry.

Then, use a brush or roller to evenly apply the topcoat in thin coats, following the manufacturer’s instructions for drying time between coats.

Once dry, the topcoat will provide an additional layer of durability and longevity for your freshly painted fiberglass door.

Regular maintenance and touch-ups.

Regular maintenance and touch-ups are important to keep your painted fiberglass door looking its best. Here are some tips:

  • Inspect the door regularly for any chips, scratches, or signs of wear.
  • Clean the door with a mild soap and water solution to remove dirt and grime.
  • Use touch – up paint to fix any small areas that need attention.
  • If the paint starts to fade or peel, consider repainting the entire door for a fresh look.
  • Apply a clear topcoat every 1-2 years to add an extra layer of protection against UV rays and weather damage.
  • Avoid using harsh cleaners or abrasive materials that could damage the paint.
  • Keep an eye out for any water damage or moisture buildup around the door, as this can affect the durability of the paint.


Painting a fiberglass door is a simple and rewarding project that can be done by amateur painters.

By following the steps outlined in this guide, you can prepare the door, choose the right paint, and apply it correctly for a professional-looking finish.

Remember to clean the door, fill any holes or cracks, and sand the surface before painting.

Use a latex-based paint suitable for exterior use on fiberglass doors and apply thin coats with a brush or roller.

Allow proper drying time between coats and consider adding a clear topcoat for added protection.

With these tips in mind, you’ll have a beautifully painted fiberglass door that will enhance your home’s appearance!


Can I paint a fiberglass door myself?

Yes, you can paint a fiberglass door yourself by following the proper steps and using the right materials.

What do I need to prepare before painting a fiberglass door?

Before painting a fiberglass door, you should clean it thoroughly, remove any hardware or accessories, sand the surface lightly, and apply a primer.

What type of paint should I use for a fiberglass door?

It is recommended to use an exterior-grade acrylic latex paint for painting a fiberglass door as it provides good durability and weather resistance.

How many coats of paint should I apply to my fiberglass door?

It is usually best to apply two coats of paint to ensure good coverage and an even finish on your fiberglass door.

How long does it take for the painted fiberglass door to dry?

The drying time of the painted fiberglass door depends on various factors such as temperature and humidity but typically takes around 24 hours before it is fully dry and ready for normal use.

Randy CharlesProfessional Painter

Randy Charles is the owner of, a website dedicated to providing information, tips, tricks, and news about all things paint. With over 10 years of experience in the painting industry, Randy has become an expert in the field and is passionate about helping others learn more about painting. He has written numerous articles on the subject and is committed to providing accurate and up-to-date information to his readers.

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