Can you paint composite doors

Can You Paint Composite Doors?

With decades of painting and decorating experience, customers frequently ask me whether it is possible to paint a composite door.

Composite doors have gained popularity due to their durability and low maintenance. In this comprehensive guide, I will address whether you can paint composite doors, the necessary materials, a step-by-step process, and alternative options.


What are composite doors?

Composite doors are made out of a combination of materials, including uPVC, fiberglass, and wood. These materials are used because of their durability, weather resistance, and insulation properties.

Can You Paint a Composite Door?

Dulux says it’s safe for adults and children to sleep in a freshly painted room as soon as the paint has dried.

Most Dulux paints suitable for painting a bedroom will take 2-4 hours to dry. But you should always check the instructions on the paint tin for exact drying times. While you are waiting for your walls to dry, you can use the time to clean your dirty paint brushes.

The drying times will vary based on the type of paint you used for your walls, ceilings, and skirting boards.

Also, every paint brand will have slightly different paint drying times, so bear that in mind before deciding when it’s safe to sleep in your newly painted room.

Materials Needed to Paint a Composite Door

Materials Needed

Before you begin painting a composite door, gather the following materials:

  1. Mild detergent or soap
  2. Clean water
  3. Soft sponge or cloth
  4. Fine-grit sandpaper (180-220 grit)
  5. High-quality bonding primer suitable for composite materials
  6. Exterior-grade paint suitable for composite doors
  7. Paintbrushes (synthetic bristle) and/or rollers
  8. Masking tape
  9. Drop cloths or plastic sheets

The Process of Painting a Composite Door

To ensure a successful painting project for your composite door, follow these step-by-step guidelines:

  1. Clean the door: Start by thoroughly cleaning the door’s surface using a mild detergent or soap and clean water. Remove any dirt, dust, or grime, paying close attention to the areas around hinges, handles, and glass panels. Rinse the door and allow it to dry completely.

  2. Sand the door: Gently sand the door’s surface using fine-grit sandpaper. This step helps to create a textured surface for the primer and paint to adhere to. Remove any dust or debris after sanding.

  3. Apply primer: Apply a high-quality bonding primer specifically designed for composite materials. Follow the manufacturer’s instructions regarding drying times and coverage. The primer helps create a strong bond between the door surface and the paint, promoting better adhesion and durability.

  4. Paint the door: Once the primer is dry, apply the exterior-grade paint using high-quality synthetic bristle brushes or rollers. Begin with the recessed areas and work your way out to the flat surfaces. Apply thin and even coats, allowing each coat to dry before applying the next. Multiple thin coats are preferable to one thick coat for better durability and a smoother finish.

  5. Finishing touches: Once you have achieved the desired color and finish, remove any masking tape carefully. Inspect the door for any touch-ups or imperfections, and make necessary adjustments using a small brush.

Considerations and Alternatives

While painting a composite door is possible, it’s important to note that some manufacturers may void warranties if the door is painted. Therefore, always check the manufacturer’s guidelines before proceeding. Additionally, composite doors are available in a wide range of colors and finishes, eliminating the need for painting. If you desire a different look, consider alternative options such as vinyl wraps or replacement inserts that offer flexibility without the need for painting.


In conclusion, painting a composite door is a viable option when done correctly. By following the necessary steps and using suitable materials, you can transform the appearance of your composite door to suit your preferences. However, always refer to the manufacturer’s guidelines and consider alternative options to ensure you make an informed decision.

Also, if you’re in the spirit of giving the rest of your home’s exterior a new lease of life, check out my article on how to paint a pebbledashed wall.

Or, if you’re planning to paint other parts of your home’s exterior or interior and aren’t up for a tricky DIY job, you can contact our local painters and decorators in Camberwell.