Galv Spring Head Roofing Nails

The galvanised spring head roofing nail - also called a clout nail or spring shank roofing nail - is the correct fastener for fixing roofing felt, bituminous membranes, and mineral-felt roof coverings to timber roof decks and boarding. At the DIY Hardware Store, our spring head roofing nails are available in the sizes specified for standard domestic roofing felt fixing.

The large, flat head of a roofing nail prevents the felt from tearing away from the nail point under wind uplift - the primary loading on a felt roof in British weather conditions. The spring or jagged shank resists the withdrawal forces generated by wind and thermal cycling, keeping the felt firmly anchored to the deck. Galvanised finish is essential: a roofing nail in an exposed position that corrodes will stain the felt, weaken, and eventually allow the covering to lift. Standard sizes for domestic felt roofing are 20mm, 25mm, and 30mm.

  • Large flat head resists felt tearing under wind uplift
  • Spring or jagged shank for withdrawal resistance
  • Galvanised to prevent corrosion staining and weakening
  • Standard for bituminous felt and membrane flat roof covering
  • Available in 20mm, 25mm, and 30mm standard roofing sizes
  • Suitable for domestic shed, garage, and extension roofing