The waterproof polycarbonate sheet screw cover washer Ø48mm is the ideal accessory for the proper fastening and protection of your polycarbonate constructions, ensuring durability, waterproofing, and a professional finish. This special polycarbonate washer comes with a foam sealing ring and a cap that covers the screw, preventing water, dust, and moisture from penetrating the polycarbonate sheet. With a 48mm diameter and a transparent color, it blends seamlessly into any structure without affecting its appearance, while it is compatible with all polycarbonate sheet thicknesses. For proper installation, you can select the appropriate fastening screw (not included with the washer) in various lengths depending on the sheet’s thickness. In wooden constructions, the most common options are 6x80mm or 6x60mm screws, while for metal frames the standard choice is a 4.8x45mm screw. Using a polycarbonate screw cap washer ensures long-lasting protection, prevents leaks, and provides stable fixing while maintaining the clarity and strength of the sheet. It is ideal for canopies, pergolas, greenhouses, roofs, and any type of project that requires reliable fastening and a professional look. In our online store, you will find waterproof screw cover washers for polycarbonate sheets of premium quality at competitive prices, helping you complete your installation in the most secure and efficient way.