AeroBarrier Building Envelope Air Sealing by Aero

AeroBarrier Building Envelope Air Sealing

Aero

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Blower door setup

Sealing station setup

Before and After seal

Before and After seal

Before and After seal

Before AeroBarrier

After AeroBarrier

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Description

The Greenguard Gold certified AeroBarrier system is intended for use in the interior of residential and commercial buildings where owners and occupiers want a 'better than code' outcome for the air tightness of living spaces to achieve safer, more comfortable environments with improved building performance, in an easy cost effective manner.

The system is developed and manufactured in the USA to reduce random air movement and air infiltration through buildings, to reduce heat loss and control water vapour in wall cavities and building envelopes. AeroBarrier seals leaks up to 13mm and as small as a human hair. It is UL GreenGuard Gold certified and safe to use in any type of building.

It is intended that the air seal should occur at the plane of the interior wall and ceiling linings unless otherwise specifically designed.

Key Features

Currently, the system is used extensively in the USA, Canada, UK and Europe.
Most economical to install at stopped plasterboard, before finishing lines stage of construction but can be applied to unoccupied, finished spaces.
The system consists of sophisticated electronic components, specialised software and strategically placed spray stations which distribute atomised sealant into the pressurised building envelope. The sealant particles are carried to gaps and holes in the envelope as the air pressure is equalising from the interior to the lower exterior air pressure resulting in sealing both visible and hidden gaps and holes in the building envelope.
The building envelope is pressurised by the use of a modified blower door and fan assembly and maintained at constant pressure to enable both pre-seal and post-seal test leakage measurements, and sealant distribution, completely run and monitored from a laptop computer via wifi.
When the procedure is complete, the system produces a certificate of completion recording the pre-seal and the post-seal airtightness of the envelope in both litres per second (L/s) and in air changes per hour (ACH) at 50Pa.
The sealant is a water based non toxic low VOC, flexible sealant.

Scope of Use

The system is intended for use in conjunction with other components designed to improve air tightness, in order to achieve best outcomes, such as superior joinery, electrical fittings, down-lights, mechanical ventilation systems and construction considerations.

The system is suitable for use in most wall and ceiling construction types that already meet the requirements of the New Zealand Building Code and in particular Clause H1. Including; Timber and steel framing in accordance with NZS 3604 and Nash Standard Part two.

Limitations on Use

The AeroBarrier sealing system is limited to use in buildings that meet the requirements of the New Zealand Building Code in every respect including Clause H1.
An acceptable mechanical ventilation system must be installed where the AeroBarrier system will reduce the ACH (Air Changes per Hour) to less than 5 ACH.
Unless otherwise specifically designed by a suitably qualified professional, the plane of the air seal should be at the interior lining of the wall and ceiling with insulation on the outer side.
AeroBarrier sealant cannot be installed when temperatures are less than 8°C or where ambient internal moisture content is over 90%. In some circumstances a heater may be used to control these limitations.

Statement of Building Code Compliance

AeroBarrier Sealant will meet the requirements of following clauses of the NZBC.

Clause B2 DURABILITY: Performance B2.3.1 (a) not less than 50 years.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1

In-Service History

This system is used extensively in the USA, Canada, UK and Europe.

Other Performance Attributes

The Aerobarrier system is a recognised and proven method to contribute to gaining certification for the following enhanced performance certification.

NZGBC — New Zealand Building Council: Green Star Ratings
PHINZ — Passive House Institute New Zealand: Passive House

Case Studies

Case Studies

Multi-Unit Development Targeting Passive House Certification Hits Airtightness Goals with AeroBarrier

Aero

February 2025

Case Studies

Ultra-Efficient Air Sealing Process Helps Townhouse Development Meet Homestar 6

Aero

November 2024

Case Studies

Fletcher Living Puts AeroBarrier Technology to the Test in Pilot Home

Aero

August 2024

Case Studies

AeroBarrier is a game-changing system to increase building envelope airtightness, to improve energy efficiency and moisture management for better durability and air quality.

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