John George

Used for securing galvanised steel sheeting. The convex washer covers the hole made in the sheet by the shank of the nail. The twisted shank gives greater resistance to pull out created by the flexibility of roofing materials in windy conditions.

For use with joist hangers and restraint straps. Can also be used for external cladding and/or felt. The twisted shank gives superior pull out resistance.

Ideal for lightweight and decorative jobs, for example fixing plywood parts to solid timber. Sherardised panel pins can be used on external glazing beads.

Used in the fixing of the slates to help combat wind 'lift'. Also allows slates to bend and recover under wetting and heating cycles. Manufactured from copper to help minimise the effect of corrosion.

Used to fix hardboard and other thin boards.