Timber Screws 14x50mm with 26mm EPDM Washer (EZ Glaze) 50 Pack

The Timber 14×50 screws with 26mm EPDM washer are the standard fixing for the EZ Glaze polycarbonate roofing system on timber rafters and battens. The 50mm length is sized for a single layer of sheet on a standard timber frame, giving a secure bite into the rafter while the oversized washer does the sealing work on the sheet surface.

The 14 gauge screw provides the lateral strength to hold the high-profile crests of the EZ Glaze sheet firmly in place, even in exposed positions. The sharp, deep thread grips softwood and hardwood alike without stripping. Around the shank, the 26mm EPDM-backed washer spreads the clamping force across the crest and seals the fixing point against rain.

Because polycarbonate moves with temperature, the EPDM gasket is what keeps the roof rattle free and watertight over time. A rigid washer would crack the sheet as it expands and contracts; the flexible EPDM backs moves with the panel and keeps the seal intact.

Key Features

• 14g x 50mm, sized for standard timber rafters
• 26mm EPDM-backed washer for wide load distribution
• Sharp deep thread for a secure bite in timber
• Crest-fixing geometry for EZ Glaze panels
• Weatherproof seal that allows thermal movement
• Supplied in a 50 pack

Specifications

Applications

• Fixing EZ Glaze sheets to timber rafters and battens
• Pergolas, patios, verandas and carports
• Garden and pool shelters

What You Need To Complete The Job

These screws fix the EZ Glaze sheet to the timber frame. Add EZ Glaze Ridge Cap at the apex and a layer of Purlin Tape along the rafters to stop the sheet creaking. The full system is in the EZ Glaze category.

Frequently Asked Questions

How many screws are in a pack?

Each pack contains 50 screws. That covers a typical small pergola or veranda at the recommended six screws per sheet, with some spare for mistakes or future work.

What timber are these screws designed for?

They are designed for the common construction timbers used for rafters and battens, including treated softwoods and hardwoods. The deep thread bites securely without stripping the wood grain.

Do I need a pilot hole in the timber?

For most timber rafters, no. The screw drives directly through the sheet and into the timber. On very hard hardwoods, a pilot hole at the fixing point can make driving easier, but it is not essential for standard framing.

Can I use these screws to fix the ridge cap as well?

The ridge cap is fixed with the same EZ Glaze fixing approach, and the 50mm timber screw works where the cap meets a timber rafter. Follow the EZ Glaze installation guidance for the ridge cap fixing positions.

Will the washer mark the sheet?

The EPDM backing is soft and designed to compress against the sheet without scratching it. Drive the screw until the washer just begins to compress, and no further, so the seal is complete without overloading the panel.