
Plastic windows on boats can be restored and maintained using a variety of products and techniques. It's important to know how to properly clean and restore boat windows to avoid inadvertently damaging them with the wrong methods and products. Clear vinyl windows, in particular, are known to turn hazy, yellow, cloudy, and brittle over time, even with the best care. However, with the right products, you can restore clear plastic windows, removing haze, dirt, stains, and even fine scratches.
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What You'll Learn
- Rinse with fresh water, then wash with mild soap and a soft cloth
- Use a one-bottle cleaner, scratch remover, and polish with UV protection
- Try a two-step process with a separate cleaner and restorer
- Use a polish such as Meguiar's No. 10 Clear Plastic Polish
- Apply a mist-and-wipe cleaner/conditioner to extend the life of the windows

Rinse with fresh water, then wash with mild soap and a soft cloth
Rinsing your boat's plastic windows with fresh water is an important first step in the cleaning process. This helps to wash away any dust, grit, or other loose particles that may be on the surface of the windows. It is important to use fresh water as salt or soapy water can leave residue and cause streaking.
After rinsing, the next step is to gently wash the windows with a mild soap and a soft cloth. Ivory Liquid soap is recommended by Boating Mag, but you can also use a dedicated plastic cleaner like Armada's 210 Plastic Cleaner/Polish or Mother's Marine Power Plastic. When washing, be careful not to apply too much pressure as this can scratch the plastic. Instead, use gentle circular motions to loosen any dried-on dirt or grime.
It is important to use a soft, clean cloth for this step as any abrasive materials or dirty cloths can scratch the plastic. Make sure to rinse your cloth frequently in fresh water to avoid transferring dirt or grit back onto the windows. You should also be careful not to drop your cloth on the ground, as it may pick up sand, grit, or salt that can scratch the plastic.
Once you have finished washing the windows, be sure to rinse them again with fresh water to remove any soap residue. Then, you can either allow the windows to air dry or gently pat them dry with a soft, clean cloth or a synthetic chamois. Avoid wiping the windows when they are dry, as this can also cause scratching.
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Use a one-bottle cleaner, scratch remover, and polish with UV protection
To restore boat plastic windows, you can use a one-bottle cleaner, scratch remover, and polish with UV protection. This is a simple and effective way to clean, restore, and protect your plastic windows.
The best product on the market for this is Mother's Marine Power Plastic. It is a one-step cleaner, restorer, polish, and UV protectant. It will clean your windows, remove scratches, and leave a protective coating to prevent future damage. This product is highly rated and will leave your windows with a lustrous finish.
Another highly-rated option is Sailor's Solutions X-16. This product is a combination cleaner, with an extra-fine abrasive that can remove light scratches and leave a nice shine. It also acts as a polish and UV protectant. However, it should be noted that this product can separate over time, so it is important to follow the directions carefully and not let it dry for too long, or it will leave streaks.
These one-bottle products are a great choice if you want a simple and effective way to restore your boat's plastic windows. They will save you time and effort, as you do not need to go through a multi-step process. Simply follow the instructions on the bottle, and you will be able to achieve clean and protected windows.
When using these products, it is important to remember that plastic windows can be easily scratched. Therefore, you should always use a soft cloth when cleaning and avoid harsh chemicals like ammonia, alcohol, and bleach.
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Try a two-step process with a separate cleaner and restorer
If you want to restore your boat's plastic windows, you can try a two-step process with a separate cleaner and restorer. This process is ideal for older plastic windows that are scratched, hazy, or yellowed.
Firstly, it is important to clean the windows with a suitable product. Avoid using harsh cleaners like ammonia, alcohol, or bleach, as these can react with the plastic and cause irreversible damage. Instead, opt for a mild, non-detergent soap or a specially formulated boat vinyl window cleaner. Rinse the windows with fresh water to remove any dust or grit, and then gently wash them with a soft, clean cloth and your chosen cleaning solution. Make sure to wipe in left-to-right motions and avoid re-wiping areas to prevent scratching.
Once the windows are clean, you can move on to the second step: restoration. There are several products available for this purpose, and you can choose one based on your specific needs and preferences. Here are some options:
- 3M Marine Vinyl Cleaner and Restorer: This product comes in a thick, creamy liquid formula that effectively removes haze, dirt, and stains.
- 3M Marine Plastic Polish: After using the 3M cleaner, you can apply this thick white cream to clean and buff the windows to a protective, high-gloss finish.
- Star brite Step 1 Plastic Scratch Remover: This ultra-fine abrasive is designed for cleaning and restoring older plastic windows.
- Star brite Step 2 Plastic Polish/Restorer: Following the use of the Step 1 product, this light, clear liquid leaves a thin, polished coating on the windows.
- Novus No. 2 Fine Scratch Remover: Despite its name, this product is meant to be used as the first step in cleaning and effectively removes fine scratches.
- Novus No. 1 Clean and Shine Plastic Polish: After using the Novus No. 2 product, you can apply this polish to achieve a lustrous shine that resists fogging and static, providing a good protective coating.
- Mothers Marine Power Plastic: This one-step product combines cleaning, restoring, polishing, and UV protection. It is a creamy liquid that claims to remove light scratches, oxidation, stains, and yellowing.
- Sailors Solutions X-16 Plastic Window Polish: This combination cleaner, polish, and UV protectant quickly remove light scratches and leave a nice shine. However, it can separate over time, so be sure to follow the directions carefully.
- Meguiar's Clear Plastic Detailer: A less aggressive option for restoring cloudy plastic.
- Prism Polish: An inexpensive option that can effectively restore windows, although it may not deliver perfect results.
By following this two-step process, you can effectively restore your boat's plastic windows and protect them from future damage.
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Use a polish such as Meguiar's No. 10 Clear Plastic Polish
To restore your boat's plastic windows, you can use a polish such as Meguiars No. 10 Clear Plastic Polish. This product is designed to restore clarity and shine to plastic surfaces, and it can be an effective way to remove light scratches, haze, and oxidation from boat windows.
Step 1: Clean the Windows
Before you start polishing, it's important to thoroughly clean the plastic windows to remove any dirt, grime, or residue. Use a mild soap or a specialised plastic cleaner and a soft cloth or sponge to gently clean the windows. Rinse the windows with fresh water and ensure they are completely dry before moving on to the next step.
Step 2: Apply the Polish
Apply a small amount of Meguiars No. 10 Clear Plastic Polish to a soft, clean cloth. Work in small sections and apply the polish in circular motions, ensuring even coverage. Follow the instructions on the product label for guidance on the recommended application technique and drying time.
Step 3: Buff the Windows
Once the polish has been applied and has dried according to the product instructions, use a clean, soft cloth to buff the windows. Buffing will help to remove any excess polish and create a smooth, clear finish. You can also use an electric buffer at a low speed for larger windows or harder-to-reach areas.
Step 4: Repeat as Necessary
Depending on the condition of your windows and the level of restoration required, you may need to repeat the polishing process multiple times. Assess the windows after the first application and decide if additional polishing is needed. Remember to follow the product instructions and safety guidelines throughout the process.
Step 5: Maintain the Windows
To prolong the clarity and protection of your restored plastic windows, regular maintenance is key. Incorporate Meguiars No. 10 Clear Plastic Polish into your boat maintenance routine, reapplying it at regular intervals as recommended by the manufacturer. Additionally, use mild cleaning solutions and avoid harsh chemicals or abrasive cleaners to maintain the condition of the plastic.
By following these steps and using Meguiars No. 10 Clear Plastic Polish, you can effectively restore and maintain the clarity and shine of your boat's plastic windows. Remember to always test the product on a small area first and refer to the manufacturer's instructions for specific guidelines.
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Apply a mist-and-wipe cleaner/conditioner to extend the life of the windows
To restore boat plastic windows, it is important to use the right cleaning solution and tools to prevent scratching the plastic. After rinsing and cleaning the windows, a mist-and-wipe cleaner/conditioner can be applied to extend the life of the windows.
A good cleaner/conditioner will help to protect the windows from wear and safeguard them from UV damage, which can cause yellowing. It is recommended to use a product that is specifically designed for boat windows, such as Meguiar's No. 142 Clear Plastic and Vinyl Window Wax or Star brite's View Guard Clear Plastic Treatment. These products are designed to be applied with a clean microfiber cloth and can help to keep the windows looking good for as long as possible.
It is important to follow the instructions on the product you choose and to test it on a small area first to ensure it does not cause any discolouration or damage. After applying the cleaner/conditioner, use a soft, clean cloth to gently wipe away any excess product and buff the windows to a shine.
In addition to using a mist-and-wipe cleaner/conditioner, it is recommended to regularly clean the windows with mild soap and a soft cloth to reduce the amount of rinsing and wiping required during deeper cleans. This will help to extend the life of the windows and maintain their clarity.
By following these steps and using the right products, boat owners can effectively restore and maintain the clarity of their plastic windows, ensuring a clear view of the surrounding waters and scenery.
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Frequently asked questions
Clear View Kit is a two-part kit that removes fogging, yellowing, and minor scratches from plastic windows. It also has a UV protective coating that protects against sun damage. Other products include Mother’s Marine Power Plastic, Armada’s 210 Plastic Cleaner/Polish, and 3M Marine Vinyl Cleaner and Restorer.
Clear View should be applied to boat windows every 4 to 6 weeks to protect against UV damage and extend their life and optical clarity.
Clear Plastic Restorer by Star Brite is a good alternative. It can be applied with a foam applicator pad and then gently buffed out with a clean microfiber towel.
Avoid using paper towels or wiping the windows when they are dry. Instead, rinse them with clear water and pat them dry with a synthetic chamois or soft clean cloth.










































