UNI FLEXIBLE AIR BARRIER 2.74M X 18.25M (50M2)

UNI® Flexible Air Barrier is a flexible wall underlay giving early enclosure to builds, allowing work to continue on the inside (for up to 90 days), without waiting for the cladding to be complete.

Once the cladding is in place, UNI® Flexible Air Barrier becomes a secondary line of defence against moisture by ensuring moisture that occasionally penetrates the wall cladding is directed back to the exterior of the building.

KEY FEATURES

Eliminates expensive delays due to hold-ups on cladding or bad weather 
Once installed, UNI® works as a secondary line of defence against moisture over the life of the building, whilst still being highly breathable, passing vapour from the inside of the building out.
A fraction of the cost of rigid air barriers (materials and labour) whilst having most of the benefits
Much thicker and stronger than standard building paper/wrap 
Quick and easy installation
Codemark Certified
 

PHYSICAL ATTRIBUTES

UNI® is a nonwoven, absorbent, water-resistant 180 GSM, synthetic wall underlay.
UNI® is water-resistant and designed to provide temporary protection from weather conditions and UV exposure to timber framing, without the installation of the cladding, which allows for the continuation of internal work on the build for 90 days after installation. 
UNI® comprises three polypropylene layers: two outer layers of non-woven polypropylene with a middle layer of a functional-technical film. It is manufactured to meet the European standard EN 13589-1:2014 as well as the absorbency performance requirement as per NZS 2295:2006.
 

SCOPE OF USE

Location

In locations with a wind design pressure (ULS) of up to and including 4.6 kPa (which includes all NZS 3604:2011 wind zones).
In seismic zones up to and including seismic zone 3.
In all exposure zones.
Further than 1 m from a relevant boundary.
 

Building

For commercial and residential construction.
Designed for use with all cladding systems.
Performs on timber and steel framed buildings.
As a temporary cladding for up to 90 days.
With buildings of all building heights, up to the permissible wind design pressure of 4.6 kPa.
With cladding and joinery that complies with the relevant provisions of the NZ Building Code for the site and location.
Suitable for use as a non-rigid backing for stucco plaster.
UNI® is suitable as an air barrier on walls that are not lined.
For vertical use only, not suitable as a roof underlay.
UNI® must be covered with a suitable wall lining to any occupied spacings.
 

LIMITATIONS

UNI® (or any flexible air barrier) cannot provide seismic (bracing or racking), and fire-resistance. 
For lightweight steel, a thermal wrap must be installed.
Where a building height is greater than 10 m and upper levels contain sleeping uses or other property the external wall must be subject to specific fire engineering.
In occupied spaces, UNI must always be installed in conjunction with an internal lining.
UNI® must be covered within 90 days from installation.
 

NEW ZEALAND BUILDING CODE STANDARD (NZBC)

UNI® meets or exceeds the requirements of the NZBC.