Tiles or slates are fixed to horizontal preservative-treated timber battens which are nailed to the studs in the timber frame wall. In severely exposed conditions, the use of vertical counter battens fixed between the horizontal battens and the breather membrane is recommended to permit more efficient drainage of any water which might be driven through the tile joints. Vertical and horizontal battens should be fixed to the studs in the timber frame wall panel. Aluminium nails should not be used to fix the cladding and site-cut ends of preservative-treated battens should be liberally brushed with additional preservative to maintain protection.
