Prevent Yellowing of Plexiglass in the Sun with These Tips

Does plexiglass yellow in the sun? The answer is yes. Plexiglass, also known as acrylic glass, can turn yellow over time when exposed to the sun's UV rays. This yellowing can be unsightly and reduce the clarity of the material. However, there are steps you can take to prevent or slow down this yellowing process.

1. Use UV-resistant plexiglass

One of the best ways to prevent yellowing of plexiglass is to use UV-resistant plexiglass. This type of plexiglass is specially designed to withstand the sun's UV rays and is less likely to yellow over time. UV-resistant plexiglass is more expensive than regular plexiglass, but it may be worth the investment if you want to ensure the longevity and clarity of your plexiglass.

2. Apply a UV-resistant coating

If you already have plexiglass that is not UV-resistant, you can apply a UV-resistant coating to help protect it from the sun's UV rays. There are various products on the market that are specifically designed for this purpose. Be sure to choose a coating that is compatible with plexiglass and follow the manufacturer's instructions carefully.

3. Keep plexiglass clean

Keeping plexiglass clean can also help prevent yellowing. Dirt, grime, and other contaminants can build up on the surface of the plexiglass over time and amplify the effects of the sun's UV rays. Regular cleaning with a mild soap and water solution can help keep the plexiglass clear and reduce the risk of yellowing.

4. Avoid direct sunlight

One of the simplest ways to prevent yellowing of plexiglass is to avoid direct sunlight. If possible, place the plexiglass in a shaded area or use a cover to protect it from the sun's UV rays. This is especially important for outdoor applications, such as windows and skylights.

5. Use a UV-blocking film

Another option to protect plexiglass from the sun's UV rays is to use a UV-blocking film. This film can be applied directly to the surface of the plexiglass and is designed to block out a significant portion of the sun's UV rays. UV-blocking film is available in various shades and opacities, so you can choose one that best suits your needs.

6. Replace yellowed plexiglass

If your plexiglass has already yellowed, the only option may be to replace it. Yellowing is a sign that the plexiglass has deteriorated and may no longer be as strong or clear as it once was. Replacement plexiglass should be UV-resistant to help prevent future yellowing.

Plexiglass can yellow over time when exposed to the sun's UV rays, but there are steps you can take to prevent or slow down this process. By using UV-resistant plexiglass, applying a UV-resistant coating, keeping the plexiglass clean, avoiding direct sunlight, using a UV-blocking film, and replacing yellowed plexiglass, you can ensure the longevity and clarity of your plexiglass.