One of the most common complaints we hear is: “the sheet turned yellow and cracked after two years.” The cause is usually one of three things.
1. No real UV protection
Ultraviolet radiation gradually breaks the polymer chains in the material, making the sheet yellow and brittle. A UV layer absorbs that radiation before it reaches the sheet.
2. Installed upside down
The protection is on one face only. If the wrong face points to the sun, it is as if there were no protection at all.
3. Recycled material
Recycled resin is inherently weaker and degrades faster. That is why we work only with original German Bayer resin.
How to be sure
- Ask about the raw material and the UV warranty.
- Check the printed film on the UV face and install it facing the sun.
- Polyee Plast’s premium line carries a 10-year warranty.
