
Plastic-coated wood doors can be refinished in a variety of ways to give them a new lease of life. The process of resurfacing a plastic-coated wood door involves removing the old finish, repairing any damage, and applying a new finish. This can be done by sanding down the door, filling in any imperfections, and then applying a new coat of paint, stain, or varnish. It is important to choose the right finish for the door, taking into consideration the desired aesthetic, maintenance requirements, and protection against sun, abrasion, and weather damage. The process of resurfacing a plastic-coated wood door can be completed as a DIY project or with the help of professionals, depending on the extent of the damage and the desired outcome.
How to Resurface Plastic-Coated Wood Doors
| Characteristics | Values |
|---|---|
| Tools | Orbital sander, sandpaper, scrapers, brushes, paint thinner, bucket, wood filler, epoxy, plane, hinges, finish/varnish, stain, gloves, wax and polish remover, steel wool, lint-free cloth, sponge, glue, wooden doweling, mallet, hand saw |
| Preparation | Remove hardware, set up a disposable plastic sheet, vacuum, reinstall deadbolt |
| Repair | Fill in imperfections with wood filler, sand the filled areas, use epoxy for deeper gouges, plane the edges if the door has warped |
| Staining | Use a gel stain for vertical surfaces, apply with a brush or cloth, work in the direction of the wood grain, wipe off excess promptly, allow to dry |
| Varnishing | Use a high-quality brush, work in long, smooth strokes, soak brush in paint thinner, dip into finish, start on panels, move to moldings, rails, and stiles, wipe off any mistakes, allow to dry and cure |
| Top Coat | Choose an exterior finish coat with UV protection, apply a top coat to protect the door |
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What You'll Learn

Removing hardware and setting up a workspace
Refinishing a plastic-coated wood door is a simple project, but it does require several days to complete. Before you begin, it's important to remove the hardware from the door and set up a workspace.
First, remove all the hardware from the door, including knobs, locksets, hinges, and decorative plates. You may want to leave the inner workings of the deadbolt in place, as this will make it easier to reinstall later. It will also allow you to anchor a string to keep the door from accidentally shutting. Label each piece as you remove it to simplify reassembly.
Next, set up a workspace in a well-ventilated area, preferably outdoors or in a garage with the doors open. Use a workbench or padded sawhorses to keep the door elevated and protected during the refinishing process. Lay a dust sheet or plastic covering beneath the door to catch any dust or mess from sanding and paint stripping. If you are working indoors, be sure to keep the door away from carpets or flooring, as the process can be messy.
When your workspace is set up and your door is prepared, you can begin the refinishing process.
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Stripping paint and sanding the door
Stripping paint and sanding a plastic-coated wood door is a simple project, but it can be time-consuming. It is important to prepare the area and yourself before you begin. If you are working inside, ensure the area is protected with dust sheets, and always wear a dust mask and eye protection. If you are working outside, make sure you have enough time in your schedule to complete the task, as you don't want the stripper to dry out.
First, remove the door from its hinges and take it off its frame. If you are stripping paint from the hinges as well, leave them attached to the door. If not, you can remove them. Remove any hardware, like door handles, before you start. If this isn’t possible, protect the hardware from scratches and dust with masking tape.
Next, select the appropriate sandpaper grade for the job. You will need two or three different grades in combination to get a professional finish. Start with the most abrasive from your selection, working your way down to the least abrasive. Sweep away the dust as you go.
If your door has panels with intricate moulding, tackle these areas separately. Use sanding sponges for intricate sections, or fold a piece of sandpaper to create a sharp edge to get into tight gaps. Always sand with the grain of the wood.
Once you have worked your way around the door, check you haven’t missed any spots. First, remove any dust with a soft brush or vacuum and wipe it over with a damp cloth. The wood should be smooth and even without visible scratches or marks and no traces of paint and varnish.
Now you are ready to strip the paint. Use a paint stripper like Peel Away 1, which is good for removing many different types of paint. If you are concerned about lead paint, use a swab test kit to check for lead. If the test is positive, avoid sanding and use a chemical stripper or citristrip, which is non-toxic. Cover the door with plastic wrap to keep the stripper from drying out.
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Filling in scratches and repairing damage
Assess the Damage:
Start by evaluating the location and severity of the scratches or damage. This will help you determine the best approach to repairing the door. Deep scratches or gouges may require wood filler, while minor scratches can be sanded out.
Prepare the Area:
Before beginning any repair work, it is important to prepare the area. If the door is still attached to its hinges, cover the surrounding area with a disposable plastic sheet to catch the dust and debris. Remove all hardware from the door, except the hinges, and consider leaving the inner workings of the deadbolt in place to simplify reinstallation later.
Sand the Scratches:
If the scratches are not too deep, you may be able to sand them out. Use sandpaper or an orbital sander to smooth out the scratches, blending them into the surrounding wood. Start with a coarser grit and gradually move to finer grits to create a smooth, uniform surface. Remember to work in a well-ventilated area and wear a dust mask to avoid inhaling the dust.
Fill Deeper Scratches:
For deeper scratches or gouges, you will need to use wood filler. Choose a filler that matches the colour of your door and apply it with a putty knife. Slowly build up the filler in thin layers, allowing each layer to dry completely before adding the next. This will ensure a strong repair that can be sanded smooth once fully cured.
Sand the Filled Area:
Once the wood filler is completely dry, use sandpaper to sand the filled area. Start with coarser sandpaper and gradually move to finer grits, such as 320-grit sandpaper, until the filler is flush with the surrounding wood. Sanding the filled area will create a smooth, seamless finish that blends with the rest of the door.
Apply a Fresh Coat:
After sanding, the door is ready for a fresh coat of paint or stain. Choose a colour that matches the original colour of the door, or opt for a clear finish to showcase the natural beauty of the wood. If staining, work in the direction of the wood grain and wipe off any excess promptly. When applying paint or varnish, use long, smooth strokes and allow adequate drying time between coats.
Protect Your Work:
Once you are happy with the colour and finish of your door, it is important to protect it with a top coat. Choose an exterior finish coat with UV protection to prevent sun damage. You can opt for a water-based or oil-based topcoat, depending on your preference and the desired finish. Always read the label on your chosen products to ensure proper application and drying times.
Repairing scratches and damage on a plastic-coated wood door can be a rewarding project, giving your door a fresh, new look. Remember to take your time, work in a well-ventilated area, and follow all safety precautions when using tools and chemicals.
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Applying stain, varnish, or paint
When refinishing a door, you have several options: staining, varnishing, or painting. Each method has its own advantages and will give a different aesthetic to your door. Here is a detailed guide for each:
Staining
If you wish to keep the natural, grainy wood finish of your door, staining is a great option. Most wood stains are available in dark or light orange hues, but lighter colours like white, grey, and pastels are also available. Before staining, ensure you have properly prepared the door by sanding and filling in any imperfections. When staining, use a clean cloth or brush to apply the stain evenly. Work in the direction of the wood grain and wipe off any excess stain immediately to avoid blotching. Gel stains are a good option for vertical surfaces as they do not drip, and they provide excellent coverage.
Varnishing
Varnishing is a great way to protect your door from sun and weather damage. Oil-based varnishes are durable and provide a rich, warm glow, while water-based varnishes are easy to apply and clean, with low odour. When applying varnish, use a high-quality brush and work in long, smooth strokes. Start on the panels, then move to the surrounding mouldings, followed by the horizontal rails, and finally, the vertical stiles. Proper drying and curing are essential for a durable finish.
Painting
Painting a door can brighten up your doorway and bring life to a tired aesthetic. You can use a bright colour to open up a room and promote better natural light reflection or darken a door to accentuate carved details and make woodwork appear more elegant. When applying paint, use a lint-free cloth or a paintbrush to evenly apply the paint in long strokes, going in the direction of the grain. Wipe away any excess immediately to avoid dark patches. Allow the paint to dry completely before closing the door to avoid marring the finish. Two coats of enamel paint over a primer will provide the best and longest-lasting protection against sun, abrasion, and weather.
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Sealing and protecting the finish
Before applying any finish, it is essential to prepare the door's surface. Start by removing all hardware, including knobs, locksets, hinges, and decorative plates. If possible, leave the inner workings of the deadbolt in place to simplify reinstallation later. Set up a disposable plastic drop sheet to catch dust and mess during the process. Then, use sandpaper or an orbital sander to smooth out the door's surface, removing any existing paint or finish. Fill in any dents, scratches, or gouges with wood filler, and sand the filled areas until they are flush with the surrounding wood.
Once the surface is prepared, it's time to select the appropriate finish. For plastic-coated wood doors, you may choose from a variety of options, including paint, varnish, polyurethane, or stain. Each option has its advantages and protection levels. For example, paint offers practicality and protection against sun, abrasion, and weather. On the other hand, a clear finish like polyurethane provides durability and enhances the natural beauty of the wood.
When applying the finish, follow the manufacturer's instructions for the best results. For example, if using a stain, wear latex gloves and apply it evenly with a rag, ensuring you wipe off any excess. If using a varnish, use a high-quality brush and work in long, smooth strokes. Always allow adequate drying time between coats, as this is crucial for a durable finish.
To seal and protect the finish, focus on the edges of the door, as sealing all edges is vital to prevent moisture absorption. For exterior doors, a two-part clear coat, such as an outdoor-rated polyurethane, is highly recommended. This type of coating will cure hard and provide excellent protection against water and sun damage. Apply two coats of exterior-grade polyurethane to start and then reapply one fresh coat every two years to maintain protection.
Additionally, consider the surrounding climate and the level of maintenance you are willing to perform. For example, if you live in an area with extreme temperature variations, consider using an automotive lacquer or a product like Sikkens Cetol, which can be maintained without removing the door. Regular upkeep, such as sanding and reapplying topcoats, will also help maintain the finish and protect your door from the elements.
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Frequently asked questions
First, remove all hardware from the door except the hinges. Then, use a paint stripper or varnish remover to remove the plastic coating. Next, sand the door to smoothen the surface and prepare it for refinishing. Finally, apply your chosen finish—be it paint, stain, or varnish.
You will need basic tools such as an orbital sander, sandpaper, a vacuum, paintbrushes or lint-free cloths, and your chosen finish (e.g., paint, stain, or varnish).
Refinishing a door can give it a new lease of life, improving its appearance and protecting it from sun, abrasion, and weather damage.
The process can be completed in a few days, but it is important to allow sufficient time for each coat of finish to dry before applying the next one.
Common mistakes include not preparing the surface properly (e.g., not sanding or filling imperfections), not choosing the right finish for your needs, and not allowing enough drying time between coats, which can lead to an uneven or sticky finish.






































