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.
Can be used as a wall underlay on timber framed buildings with absorbent and non-absorbent P.V.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.
Is suitable for use in all Building Wind Zones of NZS 3604 up to, and including, “Very High”.
Will provide temporary weather protection during construction. Translucency of the underlay will enable work to proceed during inclement weather.
Unaffected by LOSP treated timber.
Spun-Bonded Non-Woven Polyolefin
Basis Weight (g/m²):
Roll Sizes (m²):
2740mm x 100, 1370mm x 75,
Roll Weight (kg):
Water resistance (mm):
Requirement: 20mm (Wall Underlay)
Vapour Permeability (µg/N.s):
Vapour Resistance (MN.s/g):
pH Extract (pH):
Requirement: ≤ 2%
Max UV Exposure (days):
Requirement: Extra Low / Very Low / Low / Medium / High / Very High / Extra High
A premium white polypropylene tape, using the latest in acrylic adhesive technology which can be used on synthetic wall & roof underlays, foil products
or damp proof membranes such as thermathene. The tape is also ideal for sealing edges of vapour control layers, ducts and underfloor foil insulation.
Extruded three dimensional synthetic black mesh, used as an air separation layer between fully sarked roof, and roof cladding. Provides a path for air
passage, ventilating potential areas of condensation or moisture accumulation and facilitating drying.
Aluband is a premium tape with the benefits of heavier bituminous adhesive and a foil backing offering high strength bond and excellent abrasion resistance.
Aluband can be exposed to the elements for up to 42 days.
As part of the system the Orange corner mouldings are used to provide a high strength, robust flashing system and a secondary weather barrier.