• Spring (domed) head. Seats over the corrugated sheet profile and helps shed water at the fixing.
• Twisted shank. Grips the timber purlin hard so sheets stay down against wind lift.
• Galvanised carbon steel. Corrosion rating 2 for sheltered roofing work.
• 65 x 3.35mm. The common size for fixing corrugated sheet to timber.
• Conforms to Eurocode 5, service class 2. Rated for structural timber use.

Spring head nails are the traditional fixing for corrugated roofing sheet onto timber. The domed head sits over the sheet profile and the twisted shank holds fast against wind lift.

• Fixing corrugated fibre-cement and metal roofing sheet to timber purlins.
• Agricultural and outbuilding roofing.
• Sheet cladding onto timber.
• Re-fixing lifted roofing sheets.

• Brand: TIMCO
• Material: Carbon steel
• Finish: Galvanised
• Head: Spring (domed)
• Shank: Twisted
• Shank diameter: 3.35mm
• Size: 65 x 3.35mm
• Substrates: Corrugated sheet to timber
• Corrosion rating: 2 (occasionally damp, rural and sheltered)
• Standard: Conforms to Eurocode 5, service class 2
• Pack: Loose by weight

What are spring head nails used for?

Fixing corrugated roofing sheets, in fibre cement or metal, down to timber purlins. The domed head sits over the sheet and the twisted shank resists wind lift.

Do spring head nails need a washer?

For weatherproofing corrugated sheet, many fixers add a felt or plastic washer under the head. The domed head itself already helps shed water at the fixing.

Why is the head domed?

The spring head bridges the corrugation and flexes slightly as the sheet moves with temperature, which helps keep the fixing tight over time.