Timber Screws 14x90mm with 26mm EPDM Washer (EZ Glaze) 50 Pack

The Timber 14×90 screws with 26mm EPDM washer are the long-reach fixing for the EZ Glaze polycarbonate roofing system on timber frames. The 90mm length lets the screw pass through the high profile of the sheet and bite deep into a purlin or rafter, which is what you want when a roof needs a substantial structural anchor against wind uplift.

The critical part of any EZ Glaze fixing is the 26mm EPDM-backed washer. Polycarbonate expands and contracts far more than timber, and a standard small-head screw will crack the sheet or let water seep in around the hole. The oversized washer spreads the clamping pressure across the crest of the sheet, while the EPDM gasket creates a permanent, flexible seal that moves with the panel.

This pack of 50 suits a mid-sized EZ Glaze installation. The 14 gauge thickness keeps the screw rigid and resistant to shearing, and the deep timber thread gives strong pull-out resistance in treated softwoods and hardwoods.

Key Features

• 14g x 90mm, the long-reach option for deep purlins
• 26mm EPDM-backed washer for wide load distribution
• Deep timber thread for high pull-out resistance
• Crest-fixing geometry for high-profile EZ Glaze sheets
• Weatherproof seal that allows thermal movement
• Supplied in a 50 pack

Specifications

Applications

• Fixing EZ Glaze sheets to deep timber purlins
• Roofs where high wind uplift is a concern
• Pergolas, patios, verandas and carports

What You Need To Complete The Job

These screws fix the EZ Glaze sheet to the timber frame. For the rest of the roof, add the EZ Glaze Ridge Cap for the apex and the EZ Glaze Head Wall Flashing where the roof meets a wall. The full system is in the EZ Glaze category.

Frequently Asked Questions

When do I need the 90mm length instead of the 50mm?

Use the 90mm screw when the sheet profile is high or the purlins are deep, and where you want a stronger bite into the timber for wind uplift resistance. The 50mm screw suits standard single-layer sheet jobs on thinner rafters.

Why is the 26mm washer so important?

Polycarbonate expands and contracts with temperature far more than timber. The oversized 26mm washer spreads the clamping pressure across the sheet crest so it does not crack around the hole, and the EPDM gasket stays flexible to keep the fixing watertight as the panel moves.

Are these screws suitable for metal frames?

No. These are timber screws with a pointed timber thread. For steel or aluminium frames, use the matching metal screws for EZ Glaze, which have a self-drilling tip and a thread designed for metal.

How many screws do I need for a job?

Allow about six screws per sheet at the recommended spacing, fixed on the crests of the profile. A 50 pack covers a typical small pergola or veranda. For a larger roof, order more than one pack.

Do the screws need to be pre-drilled?

No. The screw is designed to drive directly through the sheet and into the timber. Drive it perpendicular to the surface until the washer just begins to compress, and do not overtighten.