Simple fixing for Twinwall or Triplewall Polycarbonate to roof framework. Wide plastic washer with shank to match sheet thickness, foam sealing washer to keep water out and plastic cap to cover the screw head.
- Spreads stress and allows necessary sheet movement
- Prevents both lifting of sheets and overtightening of screws
Screws not supplied – your choice of wood or self-tapping depending on framework.
Pack of 10 Fixing Buttons for Multiwall Polycarbonate