Screw Metal 12×30 26mm washer (50 pack)

When installing the 3mm glass-like EZ GLAZE system onto steel or aluminium subframes, standard fixings often fall short. These screws feature a self-drilling tip designed to pierce metal purlins without the need for intensive pre-drilling, saving significant time on-site. The critical component of this fixing is the oversized 26mm EPDM-backed washer. This large diameter provides an expansive surface area that spreads the clamping force evenly across the polycarbonate crest, preventing the material from cracking under stress.

The integrated EPDM rubber gasket creates a permanent, flexible seal that prevents water ingress at the puncture point. Because polycarbonate expands and contracts with temperature shifts, the 26mm washer allows for this natural movement while maintaining a 100% waterproof barrier against the unpredictable British elements.

Key Features and Benefits

• Metal-to-Polycarbonate Specialist: Specifically threaded and tipped for secure attachment into metal box sections or angle irons.

• Oversized 26mm Washer: Provides superior load distribution and wind-lift resistance, essential for high-profile corrugated sheets.

• Watertight EPDM Seal: The high-quality rubber backing resists UV degradation and ensures a leak-free finish for the lifespan of the roof.

• Corrosion Resistant: Zinc-coated or galvanised finish to prevent rusting and unsightly staining on your clear panels.

• High-Speed Installation: The 12×30mm dimensions are optimised for quick driving into standard-gauge metal rafters.