Galvanised Extra Large Head Clout Nails are designed for maximum holding power where thin sheet materials risk pull-through. The oversized, low-profile head spreads load over a wider area, making them ideal for fixing roofing felt, shingles, membranes, insulation facings, thin plywood, and other sheet products. Manufactured from robust carbon steel and hot-dip galvanised for long-lasting corrosion resistance, these nails deliver secure, reliable fixings for both indoor and outdoor applications. Supplied in trade-friendly 1kg bags across popular lengths. Key Features & Benefits Extra Large Flat Head: Superior pull-through resistance for felts, membranes, and thin sheet materials. Galvanised Protection: Hot-dip coating helps prevent rust for durable external performance. Consistent Driving: Smooth shank and balanced head for clean, accurate hammering. Trusted Material: Tough carbon steel for dependable holding strength. Trade Packs: 1kg bags with clear size/quantity guidance for easy selection on site. Product & Technical Details Type: Extra Large Head Clout Nails Material: Carbon Steel Finish: Galvanised Pack Size: 1kg bags Head: Extra large flat head for enhanced holding Shank: Smooth Typical Uses: Roofing felt, shingles, membranes, thin sheet timber and facings Available Sizes (Approx. Pcs per 1kg) Length (mm) Shank Ø (mm) Approx. Pieces 13 3.0 ≈780 20 3.0 ≈580 25 3.0 ≈485 30 3.0 ≈420 40 3.0 ≈350 50 3.0 ≈320 Suitable Applications Fixing roofing felt, shingles, and breathable membranes Attaching thin sheet materials, plywood facings, and insulation vapour barriers General joinery tasks requiring a wide clamping area DIY and trade roofing/first-fix projects Instructions for Use Select a length that achieves adequate penetration into the substrate without piercing through. Drive nails square to the surface until the head sits flush—avoid over-driving which may damage thin sheets. Space fixings evenly according to the sheet manufacturer’s guidance and site conditions. Limitations & Precautions Not recommended for highly corrosive, marine, or chemically aggressive environments. Use appropriate PPE and follow site safety guidance when hammering or working at height. Extra Large Head Clout Nails – Galvanised – 1kg Bags provide heavy-duty, corrosion-resistant fixings with exceptional holding power on thin sheet materials—ideal for roofing and general construction.