• Self-drilling point fixes fibre cement profile sheets to light section steel up to 5mm, with no pre-drilling of the purlin.
• Supplied with a heavy-duty EPDM and stainless steel washer (a BAZ washer) for a watertight seal at each fixing.
• Hex head drives quickly with a socket, so you keep a steady pace across a large roof.
• Exterior silver organic coating withstands over 1,000 hours of salt spray for lasting corrosion resistance.
• Corrosion class 3 rating suits exposed exterior roofing and cladding work.
• Carbon steel body for the pull-out strength a roof fixing needs.
• Sized for corrugated and box-profile fibre cement sheets on farm and industrial buildings.

Reach for these where fibre cement profile sheets meet a steel frame, on both roofs and vertical cladding:

• Fixing fibre cement corrugated and box-profile roof sheets to steel purlins.
• Securing fibre cement cladding sheets to light section steel rails.
• Agricultural buildings such as barns, livestock sheds and grain stores.
• Industrial units, workshops and warehouses with a steel portal frame.
• Re-roofing and repair work on existing fibre cement sheet roofs over steel.

• Material: Carbon steel
• Finish: Exterior silver organic coating, over 1,000 hours salt spray
• Head: Hex (socket drive)
• Point: Self-drilling, steel up to 5mm
• Washer: EPDM and stainless steel sealing washer (BAZ washer)
• Substrate: Fibre cement profile sheet to light section steel
• Corrosion: Class 3 (exterior)
• Use: Roofing and cladding

What screws should I use for fibre cement roof sheets?

For fibre cement profile roof sheets going onto a steel frame, use a self-drilling fibre cement screw with a sealing washer like this one. The self-drilling point fixes into light section steel up to 5mm, and the EPDM washer keeps the fixing watertight.

Do these fibre cement sheet screws need pre-drilling?

No. The self-drilling point cuts its own hole through steel up to 5mm thick, so you can drive straight through the sheet and into the purlin in one action. That saves a step on every fixing across the roof.

What is a BAZ washer?

A BAZ washer is a sealing washer made from an EPDM rubber bonded to a stainless steel top cap. As you tighten the screw, the EPDM compresses over the fixing hole and forms a watertight seal, while the stainless cap protects the rubber from the weather.

Can I use these to fix fibre cement sheets to timber?

No. These have a self-drilling point for light section steel, not a timber thread. For fixing fibre cement sheets to timber purlins, use a screw with a timber point instead.

How thick a steel purlin will they drill into?

The self-drilling point is rated for light section steel up to 5mm thick. For heavier steel beyond that, you would need a different fixing.

Are these screws suitable for exterior use?

Yes. The exterior silver organic coating carries a corrosion class 3 rating and withstands over 1,000 hours of salt spray, so they suit exposed roofing and cladding on farm and industrial buildings.