Thermakraft 220 synthetic wall underlay

Thermakraft 220 a Branz appraised, lightweight, fire retardant wall underlay for use behind exterior wall cladding.  Designed to keep water out and allow vapour to escape.

Can only be used in lined applications. Section E2 of the NZBC defines lining as 'the rigid sheet covering for a wall, ceiling or other interior surface". Must NOT be used in any unlined applications, including but not limited to sheds, warehouses, garages, canopies, soffits and lean-to designs.
Warranty void when used in unlined applications.