Cavity battens

Battens to form drained cavities for lightweight cladding are fixed to the wall framing after the installation of the wall wrap.

Reqiurements for timber battens are:

• installion after the wall wrap.
• a minimum thinkness of 20mm.
• a treatment to h3.1 minimum
• hot dip galvanised fixings(stainless steel fixings are required for ACQ and CuAz treated timber battens).
• vertical installation-if short cross battens are required the muxt be 100mm max.
• have a 50mm gap between them and a veritcal batten at each end and be installed with a slope to drained water to one end.