Ethan Clarke
Plastic is a versatile material used in modern cars, but it can be prone to fading, discolouration, and deterioration over time due to sun exposure, weather conditions, and other factors. This is especially noticeable on exterior car components such as bumpers, trim, and headlights, which can make a vehicle look older or less well-maintained than it is. Fortunately, there are several methods to restore car exterior plastic, ranging from DIY treatments to commercial products. The most common approaches involve the use of heat guns, plastic restorers, or protective coatings, each with its own advantages and considerations.
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What You'll Learn
Using a heat gun
The first step is to clean the plastic surface with soap and water to remove any dirt or grime. Once the plastic is clean, you can begin using the heat gun. It is important to set the heat gun to a low or medium setting to avoid warping or damaging the plastic. Move the heat gun slowly and in sweeping motions, maintaining a distance of about 3 inches from the plastic surface to ensure even heat distribution.
The heat from the gun will cause the polymers in the plastic to soften, allowing them to realign and bringing the original pigments to the surface. This process can restore the plastic's colour and give it a rich, glossy appearance. However, excessive heat can cause the plastic to warp, melt, or become brittle, so it is crucial to control the heat and maintain a safe distance from the surface.
Once the trim has darkened, apply a UV protectant to maintain the results and prevent further fading. While this method can be effective, it is not a long-term solution as the natural oils in the plastic will eventually deplete, and the process can be repeated only a few times before the plastic becomes more brittle.
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Applying a plastic restorer
To restore the exterior plastic of your car, you can apply a plastic restorer. This is a short-term solution, as torched plastic will eventually turn dull and grey again. However, it is an easy and cost-effective way to improve your car's appearance. Here is a step-by-step guide on how to apply a plastic restorer:
Clean the Plastic Surface
Start by cleaning the plastic trim with a suitable product, such as isopropyl alcohol, to ensure there is no residue, only bare plastic. This step is important to ensure that you are working on a clean surface and avoid any contaminants burning into the plastic when applying heat.
Apply Heat (Optional)
Using a heat gun, you can heat the plastic trim to restore its colour. Heat the plastic surface one area at a time to avoid damage, and be careful not to heat any area for too long. This method works by drawing out the natural oils within the plastic and restoring its colour. However, it is important to note that this method can be risky, as it is easy for the plastic to warp or melt. Additionally, the results may vary, and the treatment may only last from weeks to a year.
Treat the Surface
After heating, you can treat the surface with olive oil, WD-40, or a trim restoration product to make the surface darker and protect it from the elements.
Apply Plastic Restorer
Using a microfiber or foam applicator, apply the plastic restorer onto the plastic trim. You can use products such as Solution Finish Trim Restorer, which is designed for plastics and comes in grey and black. Alternatively, you can try products like Cerakote, which is said to be permanent and long-lasting. Make sure to follow the instructions carefully and be careful during application to avoid getting the product on the paint.
Wipe Off Excess and Allow to Dry
After applying the plastic restorer, wipe off any excess product with a clean towel. Then, allow the plastic to dry for a specified amount of time, which can range from 6 hours to 20-30 minutes, depending on the product.
Reapply as Needed
Some plastic restorers may require a second application for longer-lasting results. Additionally, certain products, such as Solution Finish Over The Top Plastic Sealer, can be used as a topper to enhance and extend the life of the treatment. Remember to follow the specific instructions and recommendations for the product you are using.
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Using a propane torch
First, ensure that you are working in a well-ventilated area and that you are wearing the appropriate safety gear, including heat-resistant gloves and eye protection. Propane torches can generate extremely high temperatures, so it is crucial to take the necessary precautions.
Next, inspect the plastic surface you intend to treat. This method appears to work best on plastic that has faded to a grey or whitish colour. It may not be effective on plastic that is already a dark colour or has a different finish. Additionally, some types of plastic may not respond to this treatment, so it is advisable to test on a small, inconspicuous area first.
Once you have confirmed that the plastic is suitable for treatment, slowly and carefully apply the propane torch to the surface. Hold the torch approximately 3 inches away from the plastic and move it continuously to avoid concentrating the heat in one spot for too long. You should see the plastic change colour almost instantly as the natural oils are released.
After treating the plastic with the propane torch, you may want to apply a product to restore shine and protect the surface. Some people recommend using car wax or automatic transmission oil for this purpose. Be sure to follow the instructions on the product you choose and test it on a small area first to ensure compatibility with the plastic.
Finally, it is important to note that this method may not be permanent. The colour and shine may fade again over time, especially in intense sunlight. Additionally, repeated treatments may weaken the plastic, so it is crucial to exercise caution and consider the long-term effects on the durability of the plastic.
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Cleaning and treating plastic
Cleaning Plastic Trim
Before applying any treatment products, it is important to start with a clean surface. Use a microfiber cloth or a brush with warm water and dish soap to wipe down the plastic trim and remove any dirt, dust, or debris. For a deeper clean, especially if there are stubborn stains or residue, you can use isopropyl alcohol to wipe down the trim, ensuring that only bare plastic remains.
Heat Gun Treatment
One popular method for restoring faded plastic trim is using a heat gun. This process involves heating the plastic to its glass-transition temperature, which allows the molecules to move around and restores some flexibility to the material. It is important to be cautious when using a heat gun, as it is easy for the plastic to warp or melt if heated for too long. Always start with a clean surface and heat one area at a time. After heating, you can treat the surface with olive oil, WD-40, or a trim restoration product to enhance the colour and provide protection. However, it is important to note that heat gun treatment is not a permanent solution, and the plastic may fade again over time.
Plastic Trim Restorers
There are various plastic trim restorer products available in the market that can help restore the colour and appearance of faded plastic trim. These products are typically easy to apply and can be purchased from auto parts shops or online stores. Simply follow the instructions on the product, and you may need to apply multiple coats for the best results. While these products can be pricey, they offer a cost-effective way to improve the appearance of your car.
Alternative Treatments
In addition to plastic trim restorers, there are other alternative treatments you can explore. For example, some people have suggested using mayonnaise or canola oil on a rag to restore plastic trim. You can also look for specific products like Cerakote, which is known for its longevity and ability to bond permanently with the plastic. Additionally, products like Solution Finish Trim Restorer and Over The Top Plastic Sealer by Solution Finish are highly regarded for their quality and effectiveness. These products can restore and fix the damaged plastic, providing long-lasting results.
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Applying a UV protectant
To restore car exterior plastic, you can apply a UV protectant to prevent sun damage and fading. There are various products available for this purpose, including:
- Optimum Protectant Plus: This product can be used on interior and exterior plastics and has mild cleaning capabilities. It can be applied to a clean surface and leaves a matte finish.
- Gyeon Preserve: This product can be used on all plastics, both inside and out, and can be applied a few times a year.
- Turtle Wax Ice with UV Protectant: This is a clear spray-on wax that can be applied to black plastic.
- 303 Aerospace Protectant: This product provides superior UV protection and prevents fading and cracking. It is available as a spray or wipes.
- Adam's Total Interior Cleaner & Protectant: This product offers ceramic-infused UV protection for leather, vinyl, plastics, and glass.
- GLOZ High-Gloss Ceramic-Hybrid Protectant: This semi-permanent protectant provides weatherproof UV block and colour renewal for plastic.
- MaxPro Plastic Coating: This nano-ceramic coating provides superior resistance to UV rays and corrosion, lasting up to two years.
When applying a UV protectant to car exterior plastic, it is important to follow the specific instructions for the product you have chosen. However, there are some general steps that can be followed:
- Start with a clean surface: Ensure that the plastic surface is clean and free of any residue or contaminants. You can use a product like isopropyl alcohol to clean the plastic thoroughly.
- Apply the UV protectant: Using a microfiber applicator or foam applicator, apply the UV protectant evenly to the plastic surface. Follow the product instructions for the recommended application method (e.g., spraying, wiping, or brushing).
- Allow the product to dry: Most UV protectants will require some time to dry or cure. Refer to the product instructions for the recommended drying time, which can range from a few minutes to several hours.
- Reapply as needed: Depending on the product, you may need to reapply the UV protectant periodically to maintain protection. Some products may last for several months, while others may need to be reapplied more frequently.
It is important to note that while UV protectants can help prevent sun damage and fading, they may not completely prevent it. Additionally, some products may not be suitable for all types of plastic or surfaces, so it is essential to read and follow the instructions and recommendations provided by the manufacturer.
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Frequently asked questions
You can use products such as Solution Finish, Wolfgang Concours Series Exterior Trim Sealant, Chemical Guys VRP, mayonnaise, olive oil, WD-40, or a trim restoration product.
The heat gun method involves heating the plastic to its glass-transition temperature, which restores the colour of the plastic. However, it is important to be careful when using this method as it is easy for the plastic to warp.
The best way to restore car exterior plastic is to use a plastic restorer product, such as Solution Finish, which is easy to use and effective. Another way is to use the heat gun method, but this may not be as long-lasting and can damage the plastic over time.
