Chloe Zhang
Spray-on bed liners are a great way to protect your truck bed from daily use and damage. They are made from materials like polyurea, polyurea hybrid, or polyurethane, which can be repaired in case of scratches, cracks, or gouges. Spray-on bed liners offer better protection than drop-in liners, which are made of plastic or rubber and are more prone to cracking, breaking, and warping over time. Spray-on bed liners also have better traction support, especially when wet, and do not vibrate and rattle like drop-in liners. To apply a spray-on bed liner, the surface must be prepared properly for the product to stick, especially if the plastic has a shiny finish. This involves sanding, cleaning, and using an adhesion promoter before spraying on the bed liner.
Characteristics and Values
| Characteristics | Values |
|---|---|
| Preparation | Roughing the surface of the plastic with sandpaper to help paint adhere better |
| Use an adhesion promoter, especially for plastics that are difficult to sand | |
| Clean the plastic with soap and water, or brakleen (not directly on the plastic) | |
| Wax and grease remover | |
| Spraying | Spray two coats of adhesion promoter |
| Spray two coats of bedliner | |
| Allow 30-60 minutes drying time between coats | |
| Ensure the liner is applied evenly and with enough thickness | |
| Use a roller or aerosol spray | |
| Pour the coating into a roller tray and dip the roller into the tray | |
| Roll the bed liner onto the surface, starting at the top | |
| Use a UV-stable topcoat to prevent fading or discolouration | |
| Rattle cans are also available | |
| Drop-in liners are an alternative to spraying | |
| Maintenance | Regularly remove dirt, debris and grime buildup with a hose or pressure washer |
| Avoid harsh chemicals | |
| Conduct regular inspections |
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What You'll Learn
Preparation is key: roughen the surface with sandpaper, then clean
Preparation is key when applying a bed liner to plastic. Most plastics are made with polypropylene, which has a shiny finish that makes it difficult for paint to stick. To ensure that your bed liner adheres properly, you must first roughen the surface of the plastic. This can be done by sanding the plastic with grit sandpaper. The specific grit number may vary depending on the product and surface, but some sources recommend using 400-grit, 600-grit, or even 100-grit sandpaper. After sanding, it is essential to clean the surface thoroughly to remove any remaining dust or residue. One recommended method is to use a wax and grease remover on the sanded plastic. For a very thorough clean, some people use brakleen, but it is important to spray it onto a rag and then wipe the plastic, as applying it directly can damage some plastics. Once the surface is roughened and cleaned, you may also want to apply an adhesion promoter to further improve the adhesion of the bed liner.
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Use an adhesion promoter for better paint adhesion
When it comes to spraying a bed liner on plastic, one crucial step to ensure the paint's adhesion is to use an adhesion promoter. This is especially important when dealing with plastics, as most plastics have a shiny finish that can hinder paint adhesion.
An adhesion promoter is a product that helps improve the adhesion of paint to a surface. It is designed to create a stronger bond between the paint and the underlying material, in this case, plastic. By using an adhesion promoter, you can increase the likelihood of the bed liner adhering properly and reduce the chances of flaking or peeling.
To use an adhesion promoter effectively, it is essential to follow the manufacturer's instructions and allow adequate time for each layer to dry. After sanding and cleaning the plastic surface, you would apply the adhesion promoter as per the product instructions. This step involves spraying the adhesion promoter onto the prepared surface. It is crucial to follow the specified time frame for drying, as outlined in the product instructions, to ensure the adhesion promoter can effectively bond with the subsequent layers.
Once the adhesion promoter has been applied and allowed to dry, you can proceed with spraying the bed liner. By using the adhesion promoter as a base, you create a stronger foundation for the paint to adhere to, resulting in a more durable and long-lasting finish. This process is crucial for achieving satisfactory results when spraying a bed liner onto plastic surfaces.
Additionally, it is worth noting that some products, such as the Gorilla Truck Bed Liner, do not require a primer. However, for the best results on plastic or challenging-to-sand surfaces, they recommend using an adhesion promoter. This further emphasizes the importance of adhesion promoters in achieving optimal paint adhesion on plastic surfaces.
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Apply two coats of bed liner
To apply two coats of bed liner, follow these steps:
First, you need to prepare the plastic surface. Most plastics have a shiny finish, so roughing up the surface will help the paint adhere better. Use sandpaper to scuff up the plastic surface—a grit of 400 or 600 is recommended. Clean the surface with dish soap or a grease remover, and ensure there is no gloss left on the plastic. You can use a product like brakleen, but be careful not to spray it directly onto the plastic as it can eat away at the material.
Next, you'll want to apply an adhesion promoter to help the bed liner stick to the plastic. You can find these products at auto stores or online. Spray the promoter onto the sanded and cleaned plastic surface.
Now you're ready to apply the bed liner. Choose a bed liner product that suits your needs—popular options include Rustoleum, Duplicolor, and Raptor Liner. Make sure to mix the bed liner thoroughly before use. Carefully pour the bed liner into your chosen application tool, such as a roller and tray kit or an aerosol spray.
Starting at the top of the surface, apply the first coat of the bed liner evenly to the prepared surface. Allow this first coat to dry for at least 30 to 60 minutes. Once the first coat is dry, apply the second coat using the same method.
By following these steps and allowing adequate drying time between coats, you will achieve a durable finish that protects your plastic surface.
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Avoid harsh chemicals when cleaning to prevent damage
When it comes to spraying a bed liner on plastic, preparation is key. Most plastics have a shiny finish, which can make it challenging for paint to adhere. To ensure the bed liner sticks to the plastic, it's essential to roughen the surface. This can be achieved by sanding the plastic with grit sandpaper. However, before sanding, it's crucial to clean the plastic surface thoroughly.
To effectively clean plastic, it's important to avoid harsh chemicals that can damage the surface and potentially harm your health. Conventional cleaning supplies often contain toxic chemicals such as ammonia, bleach, phthalates, and triclosan. These chemicals can not only damage the plastic but also pose serious health risks, including cancer, heart disease, hormone disruption, and respiratory illnesses. Therefore, it's advisable to opt for non-toxic and natural cleaning alternatives.
Baking soda, castile soap, and vinegar are excellent choices for cleaning plastic surfaces. Baking soda, available in cardboard packaging, is a versatile cleaner, especially effective in the kitchen and bathroom. Castile soap, packaged in paper or glass, provides a non-toxic option for cleaning. Vinegar, combined with citrus peels, creates a powerful cleaning solution. These natural alternatives effectively clean without leaving behind any harmful residue.
Additionally, it's essential to avoid microplastics, polyethylene glycol (PEG), polyvinyl alcohol (PVA), and chlorine-based chemicals when selecting cleaning products. These substances can have negative environmental and health impacts. By choosing plastic-free and non-toxic cleaning options, you can further reduce your exposure to toxic chemicals and create a safer environment for yourself and the planet.
After thoroughly cleaning and sanding the plastic surface, you can proceed with the adhesion promoter and the application of the bed liner. By following these steps and avoiding harsh chemicals, you can achieve a durable and long-lasting finish on your plastic surface.
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Apply a UV-stable topcoat to prevent fading
When applying a bed liner to plastic, it is important to consider the longevity of the coating. To prevent fading, you can apply a UV-stable topcoat. This is a clear coat that can be pigmented to match the colour of your liner.
There are a few options for UV-stable coatings. The first is an aliphatic coating, which is not sensitive to UV light and provides excellent colour and gloss stability. The fade is so gradual that it is barely noticeable over time. Aliphatic coatings are more expensive, toxic, and require more safety procedures during use.
Another option is an aromatic coating, which is more affordable and performs extremely well. However, it is affected by UV light due to the presence of aromatic rings. If you choose an aromatic coating, the colour black will have the least noticeable fade when exposed to sunlight.
To apply an aliphatic top coat, you can use a product such as VFI-2580 Aliphatic Top Coat, which can be applied to various polyurea and polyurea hybrid coatings. This will protect your bed liner from UV rays and extend its life.
Additionally, you can use a product like Rhino Shine, which is a water-based pigmented product that restores the shine and colour of the liner. This is a less expensive option that can be applied annually to maintain the appearance of your bed liner.
Remember, proper preparation of the plastic surface is crucial to ensure the bed liner adheres well. Sanding, cleaning, and using an adhesion promoter will help create a strong bond between the plastic and the bed liner.
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Frequently asked questions
A bed liner is a way to protect your truck bed from daily use and damage.
There are two main types of bed liners: spray-on and drop-in. Spray-on bed liners are made from polyurea, polyurea hybrid, or polyurethane, and conform to every curve of a truck bed. Drop-in bed liners are plastic or rubber sheets that are "dropped into" the truck bed and are more affordable and temporary.
First, sand the plastic surface and clean it with a wax and grease remover. Then, spray on an adhesion promoter followed by the bed liner of your choice. Allow the first coat to dry for at least 30-60 minutes before applying the second coat.
It is important to properly prepare the plastic surface by roughing it up to help the paint adhere better. You can use a primer, but it is not necessary. Make sure to apply the bed liner evenly and thickly to prevent it from being easily cut or gouged.
Spray-on bed liners provide better traction support, especially when wet, and are less likely to cause noise from rattling. They also last longer and provide a more custom fit, reducing the risk of scuffing the paint or causing dents.
