
Painting over a plastic truck bed liner is a feasible task, with some users opting to use a brush and roller method, while others prefer to spray paint. Before painting, it is important to clean the surface thoroughly and consider using an adhesion promoter for better results. Some users have recommended specific products such as Sherwin Williams' all-purpose enamel, Duplicolor, and Rustoleum Bedliner. It is also suggested to lightly sand the surface to achieve a smoother texture and a better base for the top coat. Additionally, mixing colour into a bucket of bed liner is an option to achieve the desired finish.
| Characteristics | Values |
|---|---|
| Bedliner products | Durabak, Raptor liner, SMART liner, Rhino liner, X-treme liner, Rustoleum Bed Liner, Grizzly Grip |
| Bedliner types | Spray-on, roll-on, brush-on |
| Preparation | Clean the surface, sand the surface, use a pressure washer, use a self-etching primer, use a promoter for better adhesion |
| Paint types | Enamel, Fusion paint, urethane paint, gloss paint, clear coat |
| Paint application | Spray-on, brush-on, roller |
| Additional notes | Some bedliners cannot be top-coated, some bedliners come in different colours and finishes, bedliner can be applied directly over plastic |
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What You'll Learn

Sanding the truck bed coating for a hammered look
Step 1: Prepare the Surface
Before you begin sanding, it is crucial to prepare the surface of your truck bed. This includes removing any plastic liner in the truck bed and thoroughly cleaning the surface to ensure it is free of dirt, grease, or debris.
Step 2: Sand the Surface
Once the surface is prepared, you can start sanding. Use a sanding block or a scuff pad with sandpaper, starting with 80-grit sandpaper to remove any existing paint or coating. Progress through the grits, moving to 120 and then 180-grit, until the surface feels smooth and even. Pay particular attention to deep rust or corrosion, sanding it down to the bare metal. It is important to take your time during this step to ensure a consistent finish.
Step 3: Wipe Down the Surface
After sanding, use a clean cloth to wipe down the truck bed, removing all the sanding dust. You can also use a blower to blow out the dust from the bed. This step is important to ensure that the dust does not interfere with the adhesion of the new coating.
Step 4: Apply a Primer
To enhance the adhesion of the new coating, apply a coat of rust converter, primer, or sealer over the bare metal areas. Ensure that you do not use a lacquer-based primer. Allow the primer to dry completely before proceeding to the next step.
Step 5: Create the Hammered Look
To achieve the hammered look, you can use a textured roller or a brush to apply the new coating. Work in small sections, starting with the front and side panels, and then move to the tailgate and the floor of the truck bed. The textured roller or brush will create a hammered or stippled effect on the surface as you apply the coating.
Step 6: Apply a Second Coat
Once the first coat has dried, apply a second coat to enhance the finish and protect the surface. Ensure that you follow the manufacturer's instructions for drying times and application techniques for the best results.
By following these steps and taking your time during the process, you can achieve a professional-looking hammered finish on your truck bed coating.
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Using a brush and roller method for a thicker coating
The brush and roller method for applying a truck bed liner is a great way to get a thicker coating and avoid the mess of overspray. This method is also more cost-effective than a spray-on liner, and with careful preparation and application, you can achieve a durable and good-looking finish. Here's a step-by-step guide to help you through the process:
Step 1: Preparation
Before you begin, make sure you have all the necessary tools and materials, including a roller, roller tray, roller cover, handle, brush, bed liner paint, and any other recommended supplies. It is also important to ensure your work area is well-ventilated.
Thoroughly clean the truck bed to remove any dirt, debris, or existing coatings. Use a wire brush, sandpaper, or sandblast to remove any loose, peeling paint or rust on the sheet metal, and ensure there is no remaining loose rust. If there are any spills or oil stains, clean them with mineral spirits. Then, use a vacuum or blower to remove any remaining debris.
Step 2: Priming
Once the truck bed is clean and dry, apply a primer to any bare spots. A zinc-based primer is a good option, and you can either spray it on or brush it on. Be sure to follow the instructions on the primer and allow adequate time for it to dry.
Step 3: Masking
Use painter's tape and drop cloths to mask off any areas you don't want to apply the coating to, such as glass, chrome, or painted areas. This step is important to ensure a neat finish and protect other parts of your vehicle.
Step 4: Stirring and Pouring
Open the bed liner and stir it thoroughly according to the manufacturer's instructions. Typically, you'll need to stir for about 10 minutes with a provided stir stick or a similar tool. Once it's well-mixed, pour the product into the roller tray.
Step 5: Applying the First Coat
Start by using a brush to apply the bed liner to the tight corners and seams where the roller won't reach. Then, use the roller to apply the first coat to the larger, flatter areas. For the first coat, focus on getting an even coat without any missed spots, drips, or sags. The final texture will not be visible at this stage.
Step 6: Applying the Second Coat
Allow the first coat to dry according to the manufacturer's instructions before applying the second coat. The second coat will reveal the uniformly rough, high-traction surface created by the roller. If needed, apply additional coats until you achieve the desired coverage and thickness, making sure to follow the instructions for drying time between coats.
Step 7: Cleanup
Once you've finished applying the bed liner, remove the masking tape within 4 hours. Then, let the bed liner dry for about 24 hours or longer if the weather is cool. Dispose of any disposable tools and materials, and clean your reusable tools with xylene or mineral spirits to prevent the bed liner from drying on them.
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Cleaning the plastic bed with a pressure washer
Before painting over a plastic truck bed liner, it is important to thoroughly clean the surface. This will ensure that the paint adheres properly and that any dirt or grime is removed. Here is a step-by-step guide to cleaning a plastic truck bed with a pressure washer:
Firstly, remove any large debris, such as sticks and rocks, from the truck bed. Use a regular broom to sweep the bed from front to back. This will help to clear away any loose dirt or debris. Next, using a pressure washer, spray the bed liner with water. Start at the front of the bed and work your way backwards, moving the water stream from side to side. Pay extra attention to the corners and crevices, as dirt and grime can build up in these areas. Spray these areas for a few seconds to loosen any built-up dirt.
Once the bed liner is thoroughly wet, apply a suitable cleaner. For minor dirt, a car wash soap or degreaser can be used. For more stubborn dirt or grease, a citrus cleaner or dishwashing liquid is recommended. These products will help to cut through the grease and grime without damaging the plastic surface. Use a scrubbing brush to work the cleaner into the liner, being careful not to scratch the surface.
For particularly tough spots, a high-pressure washer can be used. This is especially effective for removing paint spills. However, be patient and avoid using excessive force, as it can take several scrubbing sessions to remove large spills. After scrubbing, rinse the bed liner thoroughly with the pressure washer to remove any remaining soap or cleaner. Ensure that all residue is removed before moving on to the next step.
Finally, dry the bed liner thoroughly. Use a microfiber towel to absorb any remaining water, especially in crevices and grooves. A bone-dry surface is crucial for a flawless coating application and to prevent streaks or uneven results. With the truck bed liner clean and dry, you can now move on to the painting process, ensuring a smooth and durable finish.
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Using a self-etching primer for better adhesion
If you're looking to paint over a plastic truck bed liner, a self-etching primer is a great way to ensure better adhesion. Self-etching primers are unique in that they contain acid in their formula, which helps to erode the surface and create a strong bond for the paint to adhere to. This is especially useful when painting onto difficult surfaces, such as galvanised steel or aluminium, as the acid in the primer creates a rougher surface for the paint to stick to.
When it comes to using a self-etching primer on a plastic truck bed liner, there are a few things to keep in mind. Firstly, make sure you are working in a well-ventilated area, as the primer contains toxic chemicals that can be harmful if inhaled. Follow the instructions on the primer you have chosen and prepare the surface of the truck bed liner by sanding and cleaning it thoroughly. This will ensure that the primer adheres properly and creates a strong bond.
Once the surface is prepared, you can apply the self-etching primer. It usually comes in an aerosol can and can be sprayed directly onto the surface. Hold the can about 12 inches away from the surface and use a steady, back-and-forth motion to ensure an even coat. Allow the primer to dry completely, which typically takes around 30 minutes. Depending on the brand, you may need to wait up to an hour before applying the next coat.
After the primer is dry, you can begin painting over your plastic truck bed liner. Choose a paint that is suitable for use on plastic surfaces and follow the instructions on the paint can. Typically, you will need to apply several thin coats of paint, allowing each coat to dry before applying the next. A spray paint designed for use on automotive plastics may be the best option, as it will be formulated to adhere well to the primed surface.
Using a self-etching primer will not only improve the adhesion of the paint but can also provide additional benefits. Some self-etching primers contain anti-rust technology, creating a protective barrier that prevents steel from rusting and aluminium from corroding. This adds a layer of protection to your truck bed liner, ensuring that it not only looks good but also lasts longer.
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Applying a top coat for a smoother texture
Firstly, it is important to prepare the surface properly. Clean the bed liner thoroughly to remove any dirt, grease, or debris. You can use a pressure washer or a rotary turbo washer nozzle to ensure a deep clean. Additionally, if there is any rust on the surface, treat it with naval jelly or epoxy putty to create a smooth base for painting.
Once the bed liner is clean and dry, you can begin the process of smoothing out the texture. This can be done by lightly sanding the surface with fine-grit sandpaper or steel wool. Sanding will help remove any loose pieces and create a more even base for your top coat. It is important to note that you should not over-sand, as this can damage the bed liner. A light sanding is usually sufficient to achieve the desired smoothness.
After sanding, it is a good idea to apply a primer to ensure better adhesion of the top coat. A self-etching primer or an adhesion promoter can be used for this purpose. Follow the instructions on the product you choose for the best results.
Now, you are ready to apply the top coat. Select a high-quality paint that is suitable for use on bed liners, such as urethane paint or a product specifically designed for this purpose, like Duraback or SMART liner. You can apply the paint with a brush, roller, or spray, depending on your preference and the instructions of the product you choose. If you want to achieve a specific colour, consider tinting the paint to your desired shade.
Finally, allow the top coat to dry thoroughly according to the manufacturer's instructions. You may need to apply multiple light coats to achieve the desired smoothness and coverage. Once it is dry, you can optionally apply a clear coat for added protection and shine.
By following these steps, you can achieve a smoother texture on your truck bed liner, resulting in a sleek and professional finish.
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Frequently asked questions
Yes, you can paint over a plastic truck bed liner. However, it is important to prepare the surface by cleaning and sanding it to ensure the paint adheres properly.
There are a few ways to paint over a plastic truck bed liner. You can use a brush and roller method, as this allows for more control and avoids overspray. Alternatively, you can use a spray-on method, which can give a more uniform finish.
It is recommended to use a self-etching primer or an adhesion promoter, as this will help the paint adhere to the plastic surface. You can also use all-purpose enamel paint or a tintable bed liner kit.
Yes, you can clear coat a plastic truck bed liner. A clear coat can protect the paint and give it a glossy finish. However, some bed liners cannot be top-coated, so it is important to check the manufacturer's instructions.
Yes, you can remove the plastic liner and spray the bed directly with a bed liner. This will achieve the same result and may be more durable than painting over the existing liner.


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