Ethan Clarke
Before applying a bedliner to plastic, it is important to properly prepare the surface. This process typically involves cleaning and degreasing the plastic to remove any contaminants, such as wax, grease, or dirt, that may interfere with the adhesion of the bedliner. Light sanding may also be necessary to create a rough surface that promotes better bonding. For rigid or flexible plastics that are difficult to sand, an adhesion promoter can be used to ensure proper adhesion. Once the surface is adequately prepared, a primer can be applied for optimal results, although this step may be skipped in some cases. The specific preparation steps may vary depending on the manufacturer's recommendations and the type of bedliner chosen, such as a drop-in or sprayable product.
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What You'll Learn
Remove loose material, clean and degrease the surface
To prepare plastic for a bedliner application, it is important to start with a clean surface. Begin by removing any loose material from the plastic surface. This includes dirt, debris, mud, and old paint. A light sanding can help with this process, using sandpaper with a grit of around 600. After sanding, wipe down the surface to remove any remaining dust or residue.
Once the surface is free of loose material, it is important to clean and degrease the area. This step ensures that all organic and petroleum-based contaminants are removed, promoting proper adhesion of the bedliner. Use a wax and grease remover for this purpose, following the instructions on the product for proper application and removal.
If the plastic surface has any stubborn contaminants or residue, you may need to use a stronger solvent or cleaner. However, be sure to choose a product that is safe for use on plastic and will not damage the surface. It is important to follow the manufacturer's instructions or recommendations for cleaning and preparing the surface.
After cleaning and degreasing, it is a good idea to re-clean the area before proceeding with the bedliner application. This ensures that any remaining residue or contaminants are removed, providing a clean and prepped surface for the bedliner to adhere to. Remember that proper preparation is key to achieving a durable and protective finish.
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Lightly sand the plastic
Lightly sanding the plastic is an important step in preparing plastic for a bedliner. This process will ensure the bedliner adheres properly to the surface. It is recommended to use 600-grit sandpaper for this task. Begin by gently sanding the plastic surface to create a rough texture. The goal is not to remove all the paint or smooth out the surface but to create a slightly abraded surface that will allow the bedliner to bond effectively. Take care not to apply too much pressure during sanding, as you only want to create a light texture and not damage the underlying plastic.
Once you have lightly sanded the entire surface, it is important to remove any remaining dust or debris. Use a clean, dry cloth to wipe down the sanded areas, ensuring no residue is left behind. This step is crucial as it ensures that the bedliner will adhere to the plastic and not to any loose particles, which could compromise the bond. A wax and grease remover can also be used to ensure the surface is thoroughly cleaned and free of any contaminants that may hinder adhesion.
After sanding and cleaning the plastic, it is generally recommended to apply an adhesion promoter. This step is especially important for plastic surfaces or areas that are difficult to sand thoroughly, such as corners or intricate details. The adhesion promoter will further enhance the bond between the bedliner and the plastic, ensuring a durable and long-lasting finish. Follow the instructions on the adhesion promoter product, as application methods may vary.
In some cases, you may choose to apply a primer before the bedliner, especially if you are working with larger exposed areas of bare metal or new panels. An epoxy primer can be applied directly over surface rust and does not always require sanding prior to bedliner application. However, it is crucial to follow the manufacturer's instructions for the specific products you are using, as they may have varying requirements.
By lightly sanding the plastic, cleaning the surface, and potentially applying an adhesion promoter or primer, you will create an optimal surface for the bedliner to adhere to. This preparation process will ensure a strong and long-lasting bond, protecting your plastic surfaces and maintaining the durability of your project. Remember to wear the appropriate safety gear, including gloves and a respirator, during the sanding process to protect your hands and lungs from dust and debris.
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Use wax and grease remover
When prepping plastic for a bedliner, using a wax and grease remover is an important step. This is because improper or incomplete cleaning and preparation is one of the top reasons for product failure.
Firstly, ensure you have chosen your DIY bedliner of choice. One source recommends Rustoleum, which can be used on rear bumpers, cowls, gas cap doors, fenders, and bull bars.
Next, apply the wax and grease remover to the plastic parts. This will ensure the plastic is completely clean and free of any waxes or grease that could prevent the bedliner from adhering properly. After applying the wax and grease remover, the plastic parts should be thoroughly dried.
After using the wax and grease remover, you can then sand the plastic parts with 600-grit sandpaper. This will help to roughen the surface of the plastic, which will help the bedliner to adhere better. Once the sanding is complete, you can apply another coat of wax and grease remover to ensure the surface is completely clean and free of any contaminants.
Finally, you can apply an adhesion promoter to further enhance the adhesion of the bedliner. This is an optional step but is recommended, especially for plastics, as they tend to have a very shiny finish that can hinder the adhesion of paint. After applying the adhesion promoter, you can then spray your bedliner of choice, following the manufacturer's instructions for the best results.
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Apply an adhesion promoter
To ensure proper adhesion, it is recommended to use an adhesion promoter before applying the bedliner. This is especially important for rigid or flexible plastic components like bumpers or side cladding, or hard-to-reach painted areas that are difficult to sand, such as internal corners.
First, remove any loose material present from the area you will be working on. Then, clean and degrease the surface to ensure that all organic and petroleum-based contaminants are removed for proper adhesion. You can use a wax and grease remover for this step. Next, sand the surface with 600-grit sandpaper. This will help to create a rough surface for the paint to adhere to. After sanding, wipe down the surface with a cleaner. You can use dish soap or a wax and grease remover for this step.
Now you are ready to apply the adhesion promoter. Spray two coats of the adhesion promoter onto the surface. This will help to ensure that the bedliner adheres properly and does not flake or peel off. Allow the adhesion promoter to dry completely before moving on to the next step, which is applying the bedliner.
It is important to follow the manufacturer's instructions and recommendations for the adhesion promoter and bedliner products you are using. There may be slight variations in the recommended application methods and drying times.
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Choose your bedliner and application method
Choosing the right bedliner and application method is crucial for achieving the desired results and ensuring the longevity of the coating. Here are some detailed instructions to guide you through the process:
Selecting the Bedliner
When choosing a bedliner, you have various options available, including drop-in bedliners and sprayable products. Two-component sprayable bedliners are a popular choice for their durability and protective finish. Rustoleum is a well-known brand that offers effective results. Additionally, consider the colour options available, such as black, white, and tintable kits, to match your preferences or vehicle colour scheme.
Application Methods
The application method you choose depends on your preference and the tools you have available. Here are some common application techniques:
- Applicator gun: This method allows for precise and controlled application, especially when using an applicator gun designed for two-component bedliners.
- Roller: Using a roller can be efficient for larger surfaces, as it enables even coverage and can be part of a two-component kit.
- Brush: For smaller areas or intricate details, a brush can provide more precision and control during application.
- Aerosol: Aerosol options are convenient for smaller applications and can be applied to various areas, including roll bars, running boards, and wheels.
Adhesion Promoter or Primer
Before applying the bedliner, consider using an adhesion promoter, especially for plastic surfaces or areas that are challenging to sand. This step ensures proper adhesion and helps the bedliner bond effectively. Alternatively, a primer can be applied, although it is generally not required. For larger metal surfaces or new panels, an epoxy primer is recommended to improve the coating's performance and longevity.
Remember to follow the manufacturer's instructions and recommendations for the chosen bedliner product, as they may provide specific guidelines or include application equipment with their kits.
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Frequently asked questions
The first step is to remove any loose material and then clean and degrease the surface to ensure that all organic and petroleum-based contaminants are removed.
After the plastic is clean, you should lightly sand the surface.
It is recommended to use 600-grit sandpaper to sand the plastic.
After sanding, you should wipe down the surface and then apply an adhesion promoter to ensure proper adhesion of the bedliner.
Yes, you can apply the bedliner directly after the adhesion promoter. However, some people choose to apply a primer first for better results.
