Weathertightness, Climate Control, and Acoustic Solutions for Your Builds

Masons' dedication to quality, innovation, and compliance has made them a trusted name in the New Zealand construction industry. Their solutions not only meet but often exceed industry expectations, providing architects, specifiers, and builders with the tools they need to create durable, high-quality structures.

Masons' commitment to efficiency is evident in their diverse product range, each crafted to address specific challenges within the construction industry.

UNI Flexible Air Barrier System

The UNI Flexible Air Barrier System is a versatile and high-performance solution for protecting buildings against the elements. Once installed, it provides at least 90 days (UNI PLUS) and up to 150 days (UNI PRO) of rain and UV protection for unclad framing. Interior and exterior trades can work in parallel to speed up construction programs. This system acts as a secondary line of defence, preventing moisture ingress while allowing the building to breathe. Its flexibility makes it easy to install, even around complex architectural details.

The UNI system enhances the durability of the building envelope and contributes to overall energy efficiency. It is a synthetic wall underlay system, thicker and stronger than conventional house wrap.

Barricade Weather Defense System

Designed to withstand New Zealand's harsh weather conditions, the Barricade Weather Defense System offers robust protection against wind, rain, and other environmental factors. This rigid air barrier system is easy to install and provides exceptional durability and strength. Rigid air barriers covered with a self-adhesive weather-resistive underlay can assist in the airtightness of the building envelope, improving thermal performance and reducing energy costs.

The Barricade Weather Defense System is ideal for buildings that require a high performance wall underlay. It is a premium weather-resistive rigid air barrier system for residential and commercial buildings, providing up to 150 days of UV protection, a bracing element, and a fire-rated wall system. It includes wind and earthquake bracing units and offers a 30-minute fire resistance rating for walls within a meter of the boundary.

Enviro AAC Intertenancy Wall System

The Enviro AAC Intertenancy Wall System is an optimal solution for sound and fire-rated partitioning between tenancies. Made from autoclaved aerated concrete (AAC), this system offers excellent acoustic insulation and fire resistance, making it perfect for multi-residential and commercial buildings. Its lightweight nature eases the installation process, while its robust performance ensures long-term reliability.

The Enviro AAC system meets and exceeds the stringent requirements for intertenancy walls, providing peace of mind to builders and occupants alike. It is based on Enviro AAC panels — a dense yet lightweight material that exceeds fire resistance rating (FRR) and sound transmission class (STC) compliance ratings. The construction-friendly system allows for simple and stacked methods that can be installed by as few as two builders, minimising cutting and waste.

UNI PLUS Flexible Air Barrier

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UNI PLUS Flexible Air Barrier is a fire retardant 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.

NZ-Owned Business

UNI® PLUS is a fire retardant flexible wall underlay, with the following suitability:

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).
For 'Very High' wind zones over rigid wall underlays
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® PLUS is suitable as an air barrier on walls that are not lined
For vertical use only, not suitable as a roof underlay
UNI® PLUS Must be covered with a suitable wall lining to any occupied spacings

Very High WInd Zone

NEW ZEALAND BUILDING CODE STANDARD (NZBC)

UNI PLUS meets or exceeds the requirements of the NZBC
Product Assurance Supplier Statement; PASS. Documentation is available from the downloads button on this page

If designed, installed and maintained in accordance with all Masons Plastabrick’s requirements, UNI PLUS will comply with or contribute to compliance with the following performance claims:

B1 STRUCTURE: B1.3.1, B1.3.2, B1.3.3 (a, e, f, h, j, m, q, & UV), B1.3.4 (a, b, c, d, e)

Meets requirements of NZS 2295:2006; tested to ASTM D882 for tensile properties, TAPPI T470 for resistance to tearing. NZS 2295:2006 is referenced in E2/AS1 for flexible underlays [Scion, 01/2022].

B2 DURABILITY: B2.3.1 (a), B2.3.2 (b)

Meets requirements of NZS 2295:2006; tested to ASTM G154 for accelerated UV ageing [Scion, 01/2022].

FIRE AFFECTING AREAS BEYOND THE FIRE SOURCE: C3.4 (c)

Meets requirements of NZS 2295:2006; flammability index of 1 when tested to AS 1530.2:1993 [NZWTA, 01/06/2021].

E2 EXTERNAL MOISTURE: E2.3.2, E2.3.5, E2.3.7 (a, b, c)

Meets requirements of NZS 2295:2006; tested to AS/NZS 4201.4 for water penetration, tested to AS/NZS 4201.6 for surface water absorbency, tested to ASTM E96 Procedure B for Water vapour resistance [Scion, 01/2022].
Installation details and requirements in accordance with E2/AS1.

F2 HAZARDOUS BUILDING MATERIALS: F2.3.1

Manufactured to EN 13859-2:2014; product does not emit harmful materials based on supplier’s technical data and testing specification and material safety information [Masons Plastabrick, 30/08/2021a, 30/08/2021b].
Use in accordance with the supplier’s requirements [Masons Plastabrick, 01/2022].

Masons UNI PRO Flexible Air Barrier

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Masons UNI PRO is a wall underlay and Flexible Air Barrier and is suitable for use as temporary weather protection to allow interior works to continue inside the building without the exterior wall cladding being fully in place for up to 150 days.

Masons UNI PRO Flexible Air Barrier is certified for use as a wall underlay and air barrier on buildings:

a) within the scope limitations of:
i. NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area for timber-framed construction; or
ii. NZBC Acceptable Solution E2/AS4 with regards to building height and floor plan area for light-steel framed construction, and
b) situated in wind zones (as defined in NZS 3604:2011) up to and including 'Extra High', provided stud and fixing centres are no greater than specified in the Masons UNI PRO Flexible Air Barrier Design and Installation Guide V1.0, November 2021, and
c) with absorbent or non-absorbent wall claddings directly fixed to the frame, or installed over an 18mm minimum drained cavity; or with masonry veneer, in accordance with NZBC Acceptable Solution E2/AS1 for timber-framed buildings or NZBC Acceptable Solution E2/AS4 for steel-framed buildings, and
d) where the underlay is not exposed to view in an occupied space

Masons UNI PRO Flexible Air Barrier shall be:

a) installed in accordance with the MASONS UNI® PRO Flexible Air Barrier Design and Installation Guide V1.0, November 2021, and
b) separated from fireplaces, heating appliances, flues and chimneys in accordance with the requirements of NZBC Acceptable Solutions C/AS1 and C/AS2, Paragraph 7.5.9 for the protection of combustible materials, and
c) protected from sunlight within 150 days

Contribution to compliance with Building Code clause H1.3.1(b) is conditional on:

a) the element incorporating UNI® PRO Flexible Air Barrier being part of the thermal envelope of the building, and
b) horizontal and vertical laps being securely taped

In locations with a wind design pressure (ULS) of up to and including 4.6 kPa (which includes all NZS 3604:2011 wind zones).
UNI® PRO is suitable for 'Very High' wind zones over rigid wall underlays.
In seismic zones up to and including seismic zone 3.
In all exposure zones.
Further than 1 m from a relevant boundary

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 150 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 PRO is suitable as an air barrier on walls that are not lined
For vertical use only, not suitable as a roof underlay
UNI PRO Must be covered with a suitable wall lining to any occupied spacings

UNI PRO meets or exceeds the requirements of the NZBC.

CodeMark Certified (CM70117)

If designed, installed and maintained in accordance with all Masons Plastabrick's requirements, the UNI PRO will comply with or contribute to compliance with the following performance claims:

B2 Durability: B2.3.1(a), B2.3.2
E2 External moisture: E2.3.2 (contributes to), E2.3.5 (contributes to), E2.3.7
F2 Hazardous building materials: F2.3.1
H1 Energy efficiency: H1.3.1(b) (contributes to)

CodeMark

Masons Intertenancy Wall System

Masons

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The Masons Intertenancy Wall System is a simple and flexible acoustic and fire-rated wall system based on tried-and-true materials for faster construction.

For scope of use, limitations, conditions and statement of building code compliance, refer to the Masons Intertenancy Wall System PASS Product Statement.

Simple — easy to use, flexible and fast:

The Masons system is construction friendly and designed for simplicity and flexibility. As few as two builders can install the system, and installation can be flowed around other work on-site. No weather protection is needed for the AAC panels when work stops, making on-site storage simple.

Fast — designed for buildability:

The system can be installed up to three stories continuously, without interruption, and there is often no need for extra accessories or fiddly work at mid-floors junctions. Services can be run down the framing on either side of the AAC panels, and materials are carried in smaller parts when site access is difficult. The ACC system is easier for everyone on the job.

Exceeds code — fully FRR & STC compliant:

This system meets and/or exceeds the New Zealand Building Code's minimum requirements for both fire resistance rating and sound transmission class.
It scored a rating of -/120/120 for walls up to 10 m high. FRR -/120/120 for timber frame, and -/90/90 for light steel framing.
Acoustic engineers Marshall Day reported a lab performance of 64 dB — higher than the minimum STC requirement of 55 dB for intertenancy walls.

For scope of use, limitations, conditions and statement of building code compliance, refer to the Masons Intertenancy Wall System PASS™.

Masons Barricade Weather Defense System

Masons

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A premium weather-resistive rigid air-barrier system for residential and commercial buildings.

NZ-Owned Business

The rigid underlay, covered with water, air and UV resistant self-adhesive wrap, allows construction work to get started inside the building. Interior and exterior trades can work in parallel to speed up programmes, while protecting the building from weather whilst there is no cladding in place.

Temporary weather protection for up to 150 days
Suitable for all wind zones

Masons Barricade Weather Defense System meets or exceeds the requirements of the NZBC.

CodeMark Certified (CMNZ70128)

If designed, installed and maintained in accordance with all Masons Plastabrick's requirements, the Barricade Weather Defense System will comply with or contribute to compliance with the following performance claims:

B1 Structure: B1.3.1, B1.3.3, B1.3.3(a, b, f, h), B1.3.4
B2 Durability: B2.3.1(a), B2.3.2 (a)
C3 Fire affecting areas beyond the fire source: C3.6 (contributes to), C3.7 (contributes to)
E2 External moisture: E2.3.2 (contributes to), E2.3.5 (contributes to), E2.3.6 (contributes to), E2.3.7
F2 Hazardous building materials: F2.3.1
H1 Energy efficiency: H1.3.1(b) (contributes to)

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