Ventia Iron Wall Underlay

The next-generation Ventia Iron Wall Underlay from E Built is UV resistant, has exceptional breathability, high absorbency, tear resistant with high tensile strength and fire retardant.

BRANZ Appraisal No. 1137 (2020), Ventia Iron Wall Underlay meets and exceeds the requirements of the New Zealand Building Code.
To emphasise the extraordinary quality of Ventia Iron Wall Underlay:

• UV resistance - it is BRANZ-appraised to withstand 90 days of UV exposure.
  • Allowing you to have more building time and ability to handle delays during the building process.
  • Without wasting time and money on replacing the underlay on day 61+
• Exceptional breathability that greatly reduces condensation.
  • Thus, helps prevent long-term internal building damage.
  • Helps reduce or avoid the health issues associated with damp homes.
  • Thanks to its high breathability it can be used directly on the thermal insulation layer without the need for a ventilation gap.
• High absorbency to deal with any condensation that occurs with large changes in temperature over the day-night cycles.
  • Further helping to prevent long-term internal building damage.
  • Further contributing to a drier, healthier home.
• Very high tensile strength and tear resistance.
  • Allowing this underlay to be suitable for all wind zones.
  • Low (115.2 kph), Medium (133.2 kph), High (158.4 kph), Very high (180 kph).
  • Extra high (198 kph) - when used as an overlay for rigid wall underlays.
• Fire retardant

To be used in combination with the roof underlay, sill & jamb corner moulds with BRANZ-appraised flashing tape and penetration seals.