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Thermakraft 220 is a fire retardant, absorbent, breathable wall underlay. It is a white non-woven polypropylene, for use on timber framing behind exterior wall cladding. Thermakraft 220 offers a high degree of water vapour permeability. Is suitable for use in all Building Wind Zones of NZS 3604 up to, and including, “Very High”.
Can be used as a wall underlay on timber framed buildings with absorbent and non-absorbent P.
C wall cladding direct fixed to framing.
Can be used as a wall underlay on timber buildings with absorbent and non-absorbent wall cladding installed over an 18mm minimum drained cavity.