VENTIA METAL Wall & Roof Underlay with Drainage mat

Description

VENTIA METAL Roof and Wall underlay with DRAINAGE MAT

A specialized, highly breathable, Branz Appraised roof and wall underlay (Ventia Iron 1137 & 1136) with an integrated drainage mat pre-applied.

Branz recommend this type of product is the most effective way to Retrofit wall Insulation in existing homes where the cladding is not being removed. 

https://www.buildmagazine.org.nz/articles/show/insulating-external-timber-framed-walls 

https://www.branz.co.nz/pubs/research-now/warmer-drier-healthier/warmer-drier-healthier-7/

Designed for use under open-pan style metal roofing such as - Eurostyle, TRS Standing Seam, ESPAN, Eurotray, or Euroline where specific drainage and ventilation is required.

It can help reduce the "oil canning" issue in long run sheets.  

Suitable for all climate zones in New Zealand. 

Suitable for Extra High wind zones. 

90 Days UV Exposure

Can be used directly on Plywood Sarking and RAB wall systems. 

Not suitable for roof pitches less than 3 degrees.  Roof pitch below 3 degrees require a Specific Engineering Design.

Spec sheet

Branz appraisal