Chloe Zhang
Plastic windows in convertibles are typically made from 40-gauge vinyl plastic, which is flexible, sturdy, and DOT-rated as safe for vehicle usage. This material is affordable and effective, but it is prone to aging and browning, and can become a safety hazard if neglected. Regular cleaning and maintenance are necessary to keep the windows in optimal condition and maintain clarity. While plastic windows can be replaced, it is recommended to be done professionally or with specialized equipment.
| Characteristics | Values |
|---|---|
| Material | Vinyl (Plastic), PVC |
| Gauge | 40 |
| Durability | Prone to aging, browning, cracking, clouding, and yellowing |
| Maintenance | Requires regular cleaning and polishing |
| Cleaning Products | Ammonia-free glass cleaner, Plastic Deep Cleaner, No. 2 One Step Polish |
| Cleaning Tools | 100% cotton terry towel, microfiber towel |
| Replacement | Can be replaced by cutting out and sewing in a new piece of plastic, or by using contact cement or an industrial-strength sewing machine |
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What You'll Learn
- Convertible plastic windows are typically made from 40-gauge vinyl
- They can be replaced, but it's recommended to be done professionally
- Regular cleaning is important to maintain clarity and avoid scratches
- Polishing can be done to remove haze and scratches
- Plastic windows are prone to aging and browning over time
Convertible plastic windows are typically made from 40-gauge vinyl
While glass windows have been the industry standard, vinyl windows are a great option for those seeking to restore their convertible tops without sacrificing quality. Vinyl windows are much softer and flexible than glass windows. They can be cut, sewn, attached with adhesive tape, or stapled.
In terms of maintenance, plastic windows in convertibles can be replaced, but it is recommended to have them replaced professionally. Some people have shared their experiences of using contact cement to glue in a new piece of clear plastic or sewing in the new window with an industrial-strength sewing machine. However, it is important to note that the price of replacing the plastic windows may quickly exceed the price of a new top.
There are also other options available for replacing the plastic windows, such as using marine supply places or local fabric/craft stores. Some manufacturers have also started using a urethane-based TPU plastic that is supposed to be more durable.
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They can be replaced, but it's recommended to be done professionally
The plastic windows in a convertible top can be replaced, but it is recommended to get it done professionally. This is because the plastic windows are often sewn into the top, and replacing them involves cutting out the old window and sewing in a new one. While it is possible to do this yourself with an industrial-strength sewing machine, it is a difficult process that requires specialized equipment and knowledge.
There are a few different options for replacing the plastic windows in a convertible top. One option is to take the convertible top to an upholstery shop, where they will cut out the old window and sew in a new one. This typically costs between $75 and $100. Another option is to replace the entire convertible top, which can be more cost-effective if the shop rates in your area are high. Replacing the entire top can also be a good option if the front bow needs to be removed, as many places will not deal with this type of repair.
If you are considering replacing just the plastic window, it is important to note that it may not look as tight and factory-fresh as the original. This is because the original window is part of the top and helps it keep its shape. Additionally, if the plastic is only cloudy or yellowing, rather than cracked, you may be able to use a plastic polish to clear it up instead of replacing it.
When replacing the plastic window, it is important to use the correct type of plastic. Most windows are made of 40-gauge PVC-based plastic, but some manufacturers use a urethane-based TPU plastic that is supposed to be more durable. You can also find DOT-rated 40-gauge vinyl plastic windows that are safe for vehicle usage.
In some cases, the plastic window in a convertible top may be heat-sealed rather than sewn in. If this is the case, it may be more difficult to replace just the window, and you may need to replace the entire top. However, there are some alternatives to consider before replacing the entire top. For example, you can try using double-sided foam tape such as 3M VHB tape to reattach the window, or a product like 3M window weld. These alternatives may help to avoid the constant strain that can break the bond of the tape.
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Regular cleaning is important to maintain clarity and avoid scratches
To prevent and address these issues, regular cleaning and maintenance are necessary. Here are some detailed steps and tips to help you maintain clarity and avoid scratches:
Cleaning Techniques
- When cleaning, work in a shaded area and ensure the window is cool to the touch.
- Spray a plastic deep cleaner onto the surface and allow it to penetrate for a few minutes.
- Use a 100% cotton terry towel to gently agitate and wipe down the window. Rinse the towel in clean water as needed to remove dirt and residue. Repeat this process until the window is clear.
- Finish by cleaning the surface with a product such as einszett Windscreen Clear and a microfiber towel. Microfiber towels are recommended as they are softer, lint-free, and less likely to cause scratches.
- Avoid using shop towels, low-quality cotton rags, paper towels, old t-shirts, or flannels, as these can cause micro-scratches and cloudiness.
- Avoid car washes unless they are touch-less systems, as the brushes used in many car washes can scratch the plastic window.
- Similarly, avoid hand car washes where low-quality rags are used, as these can also easily scratch the window.
Polishing and Scratch Removal
- If your plastic window has scratches, oxidation, or haze, you may need to polish the surface.
- Use a high-quality abrasive technology product designed for soft, flexible plastic windows.
- Always do a test spot on a small area before tackling the entire window to ensure the product is suitable and effective.
- After polishing, treat the plastic with a sealing product, such as 3D Bead It Up, to create a slick surface that is easier to maintain.
Replacement
In some cases, if your window is severely damaged, yellow, cracking, or severely cloudy, it might be necessary to replace the plastic window entirely. This can be done professionally or, if you have the equipment, you can cut out the old plastic and sew or weld in a new piece.
By following these cleaning, polishing, and maintenance tips, you can help maintain clarity and avoid scratches on your plastic convertible windows, ensuring they remain in optimal condition.
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Polishing can be done to remove haze and scratches
Plastic convertible windows are typically made of 40-gauge vinyl plastic, although some manufacturers have recently switched to using urethane-based TPU plastic. These windows can be polished to remove haze and scratches.
Before polishing, it is important to assess whether your plastic is eligible for polishing. Some plastics are coated with a thin film that may be damaged by abrasive chemicals in the polish. It is also important to ensure that the plastic is cool to the touch before attempting to clean or remove scratches. Use a liberal amount of plastic cleaner to safely remove surface dust and dirt.
To remove scratches from plastic, you can use a buffing wheel attachment for a drill. Simply hold the buffing surface close to the plastic to remove the scratch. You can also try progressively finer wet sandpaper to remove deep scratches. Start by rubbing the area with 220-grit sandpaper dipped in water, using a circular motion. After a few minutes, move to 320-grit sandpaper, then 400-grit. The finer sandpaper will produce a smoother finish. For a shinier finish, start with 800-grit paper dipped in water to minimize friction and heat, which may melt and distort the surface of the plastic.
A wide range of plastic polishing compounds is available for different types of plastics, including plexiglass, resin, and acrylic. Liquid, paste, and putty-style products are available. With a 3-part polishing system, start by putting the roughest compound on a rag and rubbing at the scratch in a circular motion until the edges of the scratch are mostly gone. Wipe off the polishing compound, then move on to the next roughest compound, applying it in a circular motion. Once that has worn down the scratch, remove it with a rag. Finally, use the smoothest polisher to finish up, leaving a smooth, scratch-free surface.
To prevent scratching, use a soft cotton cloth and avoid using polyester or rayon wipes, which can scratch unprotected plastics.
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Plastic windows are prone to aging and browning over time
Plastic windows are highly susceptible to ageing and browning over time. This is due to the plasticizers in the plastic leaching out, causing the material to become brittle and hard. As a result, the window will become hazy and opaque, making it difficult to see through. This process is accelerated by various environmental factors, such as sun exposure, hard water, road grime, air pollution, ocean air salt, and other pollutants.
To counteract this, regular cleaning and maintenance are essential to preserving clarity and prolonging the lifespan of plastic windows. It is recommended to use an ammonia-free glass cleaner, such as Windscreen Clear, to wash the windows and prevent cloudiness caused by ammonia-based cleaners. Microfiber towels are ideal for a scratch-free, lint-free finish, and they should be washed without bleach or fabric softener to maintain their softness.
In cases where the plastic has already deteriorated significantly, it may be necessary to replace the window entirely. This can be done professionally or by individuals with access to industrial-strength sewing machines. Some manufacturers have also begun using urethane-based TPU plastic, which is expected to be more durable and resistant to ageing.
Additionally, polishes can be used to remove fine scratches and haze from the window, restoring it to a like-new condition. One recommended product is the No. 2 One Step Polish, which is designed to effectively polish the haze from plastic surfaces. By following the directions on the bottle and using a 100% cotton terry towel, users can restore clarity to aged plastic windows.
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Frequently asked questions
The typical convertible top window plastic is made from 40-gauge plastic.
40-gauge plastic is 0.040 inches thick.
40-gauge plastic is typically made from PVC.
40-gauge plastic can be purchased from specialist suppliers such as TopsOnline.com and Upholstery Supply USA.
