Roofing Nails

Available in umbrella head with smooth, twist or ring shank; EPDM rubber washers are optional for waterproof sealing.

Roofing nails are designed for fastening corrugated steel sheets, metal panels, asphalt felt, fiber cement boards, and timber roofing structures. They are manufactured from low-carbon steel (Q195 / Q235, equivalent to ASTM A36 grade) and coated with either electro-galvanized or hot-dip galvanized finish for outdoor corrosion resistance. Common variants include umbrella‑head nails, twist‑shank, ring‑shank, and washer‑equipped types. Lengths typically range from 40 mm to 80 mm (1.5″–3″), with shank diameters from 2.8 mm to 4.2 mm (BWG 12–8, with BWG9 and BWG10 being the most common).

Smooth Shank Umbrella Head Roofing NailsTwist Shank Roofing Nails With Rubber WasherBulk Galvanized Ring Shank Roofing Nails

Applications

• Fixing corrugated steel roofing sheets to timber purlins or steel frames.

• Installing metal panels for sheds, warehouses, garages, and agricultural buildings.

• Securing roofing felt, waterproofing layers, or fibre‑cement sheets where a broad head prevents pull‑through.

• General construction and repair work requiring high withdrawal resistance in wood.

Recommendation: For coastal or high‑humidity environments, choose hot‑dip galvanized nails with EPDM washers. For hardwoods (oak, jarrah), pre‑drilling is advised to avoid bending.

Standard Stock Sizes

BWG9 × 2″ (3.76 × 50 mm) – Umbrella Head, Smooth Shank

A popular all‑round nail for attaching corrugated sheets to timber battens. The large umbrella head distributes pressure evenly, preventing sheet deformation.

• Diameter: 3.76 mm (BWG9)

• Length: 50 mm (2″)

• Head: Umbrella

• Shank: Smooth (twist shank available on request)

• Coating: Galvanized (electro or HDG)

• Packing: 50 kg carton or 1,000 pcs inner box

• Best for: Light to medium roof sheeting, farm sheds, and general maintenance.

BWG9 × 2‑1/2″ (3.76 × 65 mm) – Twist Shank with EPDM Washer

This longer nail features a twisted shank for superior grip in timber and a pre‑fitted EPDM rubber washer to seal the hole against rain ingress – ideal for exposed roofs.

• Diameter: 3.76 mm (BWG9)

• Length: 65 mm (2‑1/2″)

• Head: Umbrella

• Shank: Twist (ring shank also available)

• Washer: EPDM rubber (black or grey)

• Coating: Hot‑dip galvanized (recommended)

• Packing: 25 kg carton with plastic inner bag

• Best for: Galvanized sheet roofs, timber purlins, garden sheds, and temporary structures exposed to wind and rain.

BWG10 × 2″ (3.40 × 50 mm) – Ring Shank, Plain Head

The ring shank provides excellent withdrawal resistance without the need for a washer, making it a cost‑effective choice for interior or sheltered applications.

• Diameter: 3.40 mm (BWG10)

• Length: 50 mm (2″)

• Head: Large flat or umbrella

• Shank: Ring shank

• Coating: Electro‑galvanized (HDG optional)

• Packing: 50 kg carton, custom label accepted

• Best for: Fixing roofing felt, fibre cement boards, interior cladding, and repair work where moisture is not a major concern.