Maya Ellison
Plastic trim on vehicles can become faded, discoloured, and damaged due to exposure to sunlight, UV rays, weather, and other elements. This process, known as photo-oxidation, causes the plastic to turn from black to grey, making the vehicle appear older than it is. While there is no permanent solution, there are several methods and products available to restore oxidized plastic trim to its original condition and protect it from further deterioration. This includes cleaning and treating the plastic with products like Solution Finish, linseed oil, heat guns, and various off-the-shelf chemical solutions.
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What You'll Learn
Clean the plastic trim thoroughly
To restore oxidized plastic trim, it is important to start by cleaning the plastic trim thoroughly. This is a crucial step to ensure the effectiveness of the restoration process. Here is a detailed guide on how to clean the plastic trim:
Firstly, it is essential to remove any dirt, grime, or contaminants from the plastic trim. This can be done by using a cleaner specifically designed for plastic trim, such as Nonsense All Purpose Cleaner, or a product like Tire & Rubber Cleaner, which effectively removes oxidation and buildup. It is important to note that regular soap and water may not be sufficient to deeply clean textured plastic surfaces. Therefore, using a specialized cleaner and an exterior detailing brush to scrub the trim in circular, back-and-forth, and up-and-down motions can help ensure a thorough cleaning.
After scrubbing, use a clean microfiber towel to wipe away any residue left by the cleaner. At this stage, the trim should appear moisturized but may still look faded. If there are any stains or discolourations caused by iron contaminants, it is recommended to use an iron remover. However, be cautious as these chemicals can be too strong for plastic, so always rinse the area with water immediately after use.
Before proceeding with the restoration process, ensure that the plastic trim is completely dry. You can use a ProBlow Professional Handheld Dryer to speed up the drying process and ensure no streaks are left behind. Additionally, always wear protective gear, such as gloves, and work in a well-ventilated area to protect yourself from chemical fumes.
Once the trim is clean and dry, you can move on to the next step of the restoration process, such as applying a plastic restorer or sealant. Remember that a thorough cleaning is the foundation for successful restoration, so take your time and ensure the trim is as clean as possible.
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Use a plastic restorer
Using a plastic restorer is an easy and cost-effective way to restore oxidized plastic trim. While there are many products on the market, Solution Finish is a popular choice. It is a solvent-based modified black carbon that dissolves the existing oxidation on the plastic, fills the microscopic pores of the treated area with black carbon, and contains antioxidants and light stabilizers that prevent UV radiation from causing further oxidation.
To use Solution Finish, start by cleaning the plastic trim with isopropyl alcohol to ensure there is no residue, only bare plastic. Next, use a microfiber or foam applicator to apply the Solution Finish Trim Restorer onto the plastic. Wipe off any excess product with a clean towel and let the plastic dry for about 6 hours. After the first application, the trim will stay black and look new for approximately 8 months or more. A second application can make the results last even longer.
Another product that can be used to restore oxidized plastic trim is Sem color coat. It is a dye that soaks into the plastic. To use it, spray thin coats onto the plastic and let it sit for 10 minutes between intervals.
While some sources recommend using a heat gun or blow torch to restore oxidized plastic trim, others advise against it as it can damage the plastic and cause it to fade faster.
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Apply a UV protectant
To restore oxidized plastic trim, you need to apply a UV protectant. This is because UV rays are absorbed by plastic, and the UV energy excites electrons, creating free radicals that cause the polymer structure to break down, leading to plastic degradation.
There are several products available for this purpose, including:
- Shine Armor Plastic Restorer: This product offers UV protection and restores vinyl trim, rubber, polypropylene, and dull, degraded plastic. It is a safe, high-quality formula that does not contain harsh chemicals.
- Solution Finish: This is a solvent-based treatment that dissolves existing oxidation, restores black carbon to the microscopic pores of the treated part, and contains antioxidants and light stabilizers to prevent further UV oxidation. It can be used as a standalone treatment on new or good-condition plastics or as a topper on plastics that have been restored with Solution Finish Trim Restorer.
- 3D Trim Care: This product restores a rich, dark look to faded plastic, vinyl, and rubber trim using powerful UV-blocking polymers to prevent future oxidation, aging, and cracking.
- Turtle Wax Ice: This is a clear spray-on wax that provides UV protection.
- Gyeon Preserve: This product can be used on all plastics, both inside and outside a vehicle. It is long-lasting and helps prevent dirt buildup.
When applying these products, it is important to follow the instructions on the packaging. In general, it is recommended to start by cleaning the plastic trim with a product like isopropyl alcohol to ensure there is no residue, only bare plastic. You can then use a microfiber applicator or foam applicator to apply the UV-protectant product. Finally, wipe off any excess product with a clean towel and allow the plastic to dry.
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Use linseed oil to moisturise the surface
Restoring Oxidized Plastic Trim with Linseed Oil
Linseed oil is an easy, inexpensive, and effective homemade remedy for restoring oxidized plastic trim. It is a good option for those who want to avoid using store-bought chemical products.
Preparation
Begin by removing the plastic trim from the vehicle. Wash the trim with soap and water to remove any dirt or grime, and dry it thoroughly.
Application
Pour a small amount of boiled linseed oil onto a clean, white cloth. Rub the linseed oil onto the plastic trim, ensuring that it is evenly coated. Wipe away any excess oil with a clean cloth, and allow the trim to dry before reattaching it to the vehicle.
Maintenance
The linseed oil treatment will need to be repeated periodically as it wears off over time. To extend the results, park your vehicle in a garage or use a car cover to shield it from direct sunlight, which can accelerate oxidation.
Precautions
Use caution when handling linseed oil, as oily rags can spontaneously combust, especially under heat and pressure. Always follow proper safety guidelines when working with linseed oil and other flammable substances.
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Use a heat gun to bring oils to the surface
Restoring oxidized plastic trim can be done in several ways, one of which is by using a heat gun to bring oils to the surface. This method works for both interior and exterior plastic trim.
A heat gun can be used to restore faded plastic trim by breaking down the surface pigment of the plastic. This allows the chemical bonds between the polymers to realign, and the polymers then cool, leaving a glossy and wet surface. The heat gun draws out oils that may be trapped in the plastic trim, which can cause the trim to become discoloured and brittle. It can also cause the colour to fade faster and may result in permanent damage if not used properly.
To use a heat gun for this purpose, it is important to keep the heat between four and six inches from the surface of the trim to prevent burning or melting. The trim should be cleaned thoroughly beforehand to remove all dirt and contaminants. Any painted areas must be avoided, as the heat will damage the paintwork. It is recommended to tape off any edges of paintwork where it meets the trim.
The heat gun should be set to a high-temperature setting, and it is important to be cautious when working near the gas cap. This method can restore the colour of the plastic trim, but it may also cause the plastic to become weaker as the oils that are drawn to the surface can later oxidize. The results of this treatment may vary, with some claiming it lasts up to a year, while others say the colour fades back within minutes.
While the heat gun method may be effective for some, there are also other products available on the market that can help restore oxidized plastic trim. These include Solution Finish, which is a solvent-based treatment that dissolves existing oxidation, puts black carbon back into the microscopic pores of the treated part, and contains antioxidants and light stabilizers to prevent further UV oxidation. This product can provide long-lasting results, with one application lasting up to eight months or more.
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Frequently asked questions
Start by thoroughly cleaning the plastic trim to remove any dirt and residue. You can use isopropyl alcohol for this step. Next, apply a plastic restorer like Solution Finish, which dissolves oxidation, restores colour, and protects against UV radiation. Wipe off any excess product and let the plastic dry.
Oxidation causes plastic to wear down and develop a rough texture. You may also see discolouration, such as yellowing or browning, which is caused by bromine in the plastic. White spots on the plastic are also a sign of oxidation.
Yes, methods for restoring oxidized plastic vary depending on whether the plastic is hard or soft. For hard plastics, you can use sandpaper dipped in soapy water. For softer plastics, a mixture of detergent, household cleaner, water, and bleach can be sprayed on the area.
Regularly clean your plastic trim to prevent dirt and salt buildup, which can contribute to oxidation. You can also apply a UV protectant sealant like Solution Finish Over The Top to protect against sun damage.
Yes, avoid petroleum-based products as they can break down the natural oils in the plastic and cause more damage over time. Also, be cautious of products that only dress the plastic without actually fixing the damage, as these may not last very long.
