Ethan Clarke
Refinishing a car's plastic interior can be a challenging task. The process involves multiple steps, from cleaning the plastic surfaces to applying paint or other refinishing products. It is important to take the necessary time and care to achieve a flawless result. There are various products available for refinishing plastic car interiors, such as SEM paint products, Plastic Restore, 303 Aerospace, and Turtle Wax. Additionally, some creative methods, such as using UV light or a flame torch, can be employed to restore the original colour of faded plastic. Proper cleaning and preparation of the plastic surfaces are crucial to ensure the refinishing process is successful and to prevent further damage to the car's interior.
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What You'll Learn
Painting plastic interior pieces
Painting the plastic interior pieces of your car is a great way to revitalise its look and feel. It is a multi-step process that requires patience and attention to detail. Here is a comprehensive guide to help you achieve a flawless finish.
Preparation:
Before starting the painting process, it is crucial to gather the necessary materials and prepare the plastic interior pieces. Read your car's owner's manual to understand how to safely remove interior panels. Plastic interior trim panels, for instance, can usually be removed by carefully squeezing, pulling, and wiggling them free. Removing the pieces makes painting easier and safer, and they will also look better in the end.
Once the pieces are removed, soak them in soapy water to remove any grease, polish, or oils that may prevent paint adhesion. Dish soap is recommended as it effectively breaks down grease. Use a cleaning pad with warm soapy water to thoroughly wash the pieces. Avoid using steel wool, sandpaper, or heavy-grit cleaning pads, as they can damage the plastic surface. Just barely scuff the surface to create a suitable base for the paint. After cleaning, dry the pieces with compressed air or a blow dryer.
Priming:
Priming the plastic pieces is an essential step to ensure the paint adheres properly. Look for a high-quality spray primer labelled "Adhesion Promoter". Apply two to three thin and light coats of primer to both sides of the plastic pieces, allowing each coat to dry for about 20 minutes. This step will help create a durable finish and prevent issues like flaking, chipping, or peeling.
Painting:
When choosing a paint, consider using products specifically designed for painting plastic surfaces. SEM paint products, for example, are highly regarded for their prep and application quality. Always follow the instructions on the paint can, including recommended temperatures for application. Work in a well-ventilated area or outdoors, and wear a breathing mask to protect yourself from fumes.
Apply the paint in thin coats, allowing each coat to dry before applying the next. Two to three coats should be sufficient, depending on the desired finish. Be patient and delicate throughout the process to achieve the best results.
Reinstallation:
After the paint has dried completely, carefully reinstall the painted pieces. Refer to your owner's manual for guidance on reassembling the components in the reverse order of removal. Take your time and handle the painted pieces with care to avoid any damage.
Maintenance:
Properly maintaining your newly painted interior pieces will help prolong their lifespan and maintain their appearance. Avoid using harsh chemicals or cleaners that contain alcohol-based solvents, as these can deteriorate the paint over time. Instead, opt for mild soap and water, and always protect the surfaces with a suitable protectant that contains UV inhibitors to prevent fading.
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Using SEM paint products
SEM offers a range of products for refinishing car interiors, including paints for plastic, vinyl, and fabric surfaces. The SEM Color Coat is available in various formats, including aerosols, pints, and quarts, and can be used to refinish plastic car interiors.
To achieve the best results when using SEM paint products, it is recommended to follow these steps:
Cleaning and Preparation:
- Start by cleaning the plastic surface with soap and water, rinsing thoroughly.
- Some recommend using AJAX powder at this stage for a thorough clean, repeating the soap and water step, then using AJAX again with a green Scotch-Brite pad.
- Rinse with mineral spirits and allow to dry.
- You can also use a product like Prep-All Grease and Wax Remover to ensure the surface is free of any contaminants.
Priming:
- Apply a plastic interior primer. One user recommends four coats, waiting an hour between coats.
- Alternatively, you can use an adhesion promoter, such as SEM's Sand Free Adhesion Promoter (part number 38363). Allow it to sit for around 20 minutes at room temperature.
Painting:
- When using SEM Color Coat, follow the instructions provided by SEM for the best results. You can refer to their TDS, how-to videos, or the Refinishing Auto Plastic & Vinyl Procedures (RAP-1) training manual for detailed instructions.
- Apply multiple thin coats of paint rather than one heavy coat. This allows for better adhesion and helps prevent peeling.
- If you are painting a darker colour over a lighter one, be prepared that your final colour may be influenced by the original colour.
- If desired, apply a clear coat after the paint has dried.
Drying and Curing:
- Allow the paint to cure and dry completely. This may take a full two days or more.
- One user recommends letting the painted component bake in the sun for 30 minutes, then storing it in a garage for a week to ensure it is fully cured.
Maintenance:
Be aware that high-traffic areas, such as kick panels, may require more frequent touch-ups, perhaps once a year.
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Restoring plastic trim
Cleaning the Trim
Before starting the restoration process, it is crucial to thoroughly clean the plastic trim to remove any dirt, stains, or abrasive contaminants. Over time, your car's trim is exposed to various environmental factors, such as extreme heat or cold, that can cause it to crack, fade, or discolour. Using a dedicated interior detailer, like Turtle Wax Dash & Glass, or a multipurpose cleaner, give your car's interior a good wipe-down. Pay extra attention to intricate areas such as air vents and dashboard crevices, as dirt and grime tend to accumulate in these places. A cotton swab or a small detailing brush can help you reach these tight spots. It is important to note that some dash cleaners contain alcohol-based solvents that can deteriorate the clear coat and lead to paint fade. Therefore, it is recommended to use a mild soap and water solution or a dedicated plastic cleaner for this step.
Choosing the Right Products
Selecting the appropriate products for restoring plastic trim is essential. There are various options available, such as Plastic Restore, 303 Aerospace, or SEM custom colour paint. Plastic Restore is a popular choice, as it effectively cleans grime from various surfaces and provides a protective layer against UV rays. It is also easy to apply and does not have an unpleasant odour. Alternatively, SEM offers custom colour matching services, allowing you to achieve a seamless look for your interior trim pieces.
Application Techniques
When applying your chosen product, always follow the manufacturer's instructions carefully. Most plastic restorers can be applied with a simple microfiber towel or sponge. Ensure the surface is thoroughly cleaned and dried before application. If you are using a paint product, it is crucial to work in thin coats and allow adequate drying time between coats. Do not rush the process, as this can compromise the final result.
Preventing Future Damage
To maintain the restored appearance of your plastic trim, it is important to take preventive measures. Avoid exposing your car to prolonged periods of extreme heat or freezing temperatures, as these conditions can damage the plastic. Regular cleaning and maintenance, including the use of protectants with UV inhibitors, can also help prolong the life of your trim and prevent fading. Remember, restoring your car's plastic trim is an ongoing process, and with proper care, you can keep it looking like new.
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Cleaning plastic interior
To refinish a plastic car interior, it is important to first clean the plastic surface. Here is a detailed guide on cleaning plastic car interiors:
Firstly, it is important to note that dish soap is not recommended for cleaning plastic car interiors. Dish soap can break down the oils in the plastic, which can affect its appearance and texture. Instead, a dedicated plastic cleaner or interior cleaner is recommended.
There are various products available for cleaning car interiors, including plastic and vinyl surfaces. Some recommended products include Meguiars Quik Interior Detailing Cleaner, P&S Xpress Interior Cleaner, and Armor All. These products can effectively remove dirt, dust, and grime from plastic surfaces. For deep cleaning, a diluted all-purpose cleaner or a mixture of water with a mild soap such as Palmolive or generic dish soap can be used. A lint-free cloth or microfiber cloth is ideal for wiping down plastic surfaces to avoid leaving any residue.
It is also important to protect the plastic surfaces after cleaning. A protectant can be applied to prevent UV damage and fading. Look for protectants containing lanolin and natural moisturizers, or water-based silicone products.
In some cases, sun-faded plastic interiors can be restored using alternative methods. One method involves using a UV LED lamp to treat the affected areas. By placing the car in a dark garage and shining the UV light on specific spots, the original color can be restored. However, it is mentioned that a chemical mixture may be required for this process. Another method is to use a heat gun or flame torch to slightly burn the plastic, which can bring back the original color.
Additionally, when preparing to paint plastic interior pieces, a thorough cleaning process is necessary. This involves using a specialized soap or cleaner to wash and lightly scrub the plastic surfaces, followed by rinsing and blow-drying. An alcohol solution, such as methanol, is then used for a final wipe-down before proceeding with the painting process.
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Preventing sun damage
Sun damage to plastic car interiors is a common problem, and there are several ways to prevent it. Firstly, it is important to understand that the sun's ultraviolet (UV) rays are the main cause of damage to plastic. Over time, UV rays cause the plastic to dry out, crack, and lose its colour. Therefore, the best way to prevent sun damage is to protect the plastic from these rays.
One way to do this is by using a product that contains UV inhibitors, such as Turtle Wax Trim Restorer. These products not only protect against sun exposure but also help to restore the plastic's original colour and elasticity. They can be applied to bumpers, window seals, and siding to maintain the car's interior. It is important to clean the plastic thoroughly before applying any restorer or protectant products, as dirt and grime can become sealed into the finish.
Another way to prevent sun damage is to condition and polish the plastic regularly. Plastic conditioning products can help to preserve the plastic by replacing the oils lost due to UV damage. Additionally, using a plastic buffing product can help to remove scratches and cracks caused by sun damage. When using these products, it is important to follow the instructions and work in small sections, being careful not to apply too much heat, which can melt the plastic.
In some cases, refinishing the plastic with paint designed for plastic and vinyl can be a permanent solution to sun damage. Products such as ColorBond LVP have been successful in restoring car interior plastics to their original colour and finish. This method not only restores the appearance but also provides a protective layer against UV rays.
Finally, some at-home remedies can be used to prevent sun damage. One method involves coating the plastic in hydrogen peroxide cream and sealing it in a clear plastic bag, which is then placed in direct sunlight for a few hours. The sunlight, in combination with the cream, can help to reverse sun damage. Another method uses UV LED lamps to restore the plastic's colour. However, it is important to note that additional chemicals may be required for this process.
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Frequently asked questions
There are several ways to refinish plastic car interiors. One way is to use a plastic restorer, such as 303 Aerospace or Plastic Restore, to clean grime off interior panels and protect against UV rays. Another way is to use UV light to restore the plastic's original colour.
Place the car in a dark spot, such as a garage, and shine a UV LED lamp on a specific spot for a while. Repeat this process for the rest of the car interior.
You can use a heat gun, flame torch, or an oven cleaner to restore the colour of plastic car interiors. However, it is important to note that using a flame torch or oven cleaner may be dangerous and should be done with caution.
Yes, it is recommended to avoid using dish soap and bleach or ammonia-based cleaners on plastic car interiors. These products can break down the oils in the plastic and strip away the protective layer, respectively.
