about our services

What is air tightness testing?

Air tightness is a very important consideration in all climate regions and a majority of countries globally, now mandate minimum performance levels. Find out why it should be a priority for your building.

Source: Australian Building Codes Board, https://www.youtube.com/watch?v=DyR3Xm9TzCg&app=desktop. General information only.

All buildings unintentionally leak air, in and out. Air tightness testing identifies the amount of leakage that occurs and offers the opportunity to minimise it. The higher the air tightness level, the less unwanted  infiltration will occur.

Poor design, substandard construction, unsuitable building methods and materials can lead to high volumes of unwanted air infiltration breaching the building’s fabric. These unwanted air pathways should be kept to a minimum. 

What does air infiltration affect?

  • the durability of the building;
  • the occupant comfort;
  • the indoor air quality;
  • the occurrence of mould and;
  • the amount of energy consumed to heat or cool the building.

about us

Our services

Air Tightness Testing Services Australia offers air permeability testing for both new and existing buildings of all building classes across Australia.

who we are

Founded in 2017, we are a team of experienced air tightness testing professionals trained to ATTMA Technical Standard L2 and Passive House.

what we do

Call or email us to find out more about how we can help you on your next project from the design stage all the way through construction.

Who should use us

Connect with us and make a real difference to your next project.


Mitigate against poor quality, leaky buildings.

Architects / building designers

Make sure your assemblies and detailing deliver more energy efficiency and air quality to the built form.


Independent certification of the quality of your product.

Green Star Professionals

Deliver on the credits and innovations.

Sustainability Consultants

Deliver more resilient buildings.


Confirm the building envelope performance.

how air tightness testing is done

Accredited air tightness testing using blower doors is the preferred method of determining if the building meets the standards once constructed.

  • A building is tested under pressure to establish just how much air is being lost through those unwanted gaps and spaces.
  • The external envelope is sealed by closing all external doors and windows and other unwanted openings such as chimneys, fresh air intakes etc.
  • Using a specialised fan in an airtight shroud, a clever piece of electrical diagnostics in the form of a manometer and a computer program to interpret the results, the fan is used to create different pressures within the building and air flows recorded.
  • Comparisons between what flow occurs at each pressure and what flow should be occurring, gives a final result that informs the tester how many times the building will lose its entire internal air volume per
    hour or how many cubic metres of air will be lost every hour through the all the external walls, floor and ceiling.
  • Where possible, rectification to improve the tightness is undertaken and a re-test scheduled.


The figures show:

  • How well the building is constructed;
  • How tight the building envelope is; and
  • How good the building will be at keeping the internal conditions stable in the building.

let's talk about your project

Some very simple guidelines:

  • It’s never too early to consider air tightness and its impacts on a project.
  • Irrespective of the building type, use or form, all buildings have the same challenges when trying to provide a stable environment internally.
  • Engage a professional early to get the most economical and effective result.
  • Test twice, once during construction and once at the end of construction.
  • Ensure your tester is qualified , accredited and testing to an international standard.
what our clients say



John assisted us with the permeability testing for a Green Star project with a leading developer in the industrial sector. ATTSA was very professional and gave plenty of advice to assist in improving the results, both before and during the testing process. I would highly recommend John and ATTSA for permeability testing.

Alistair Coulstock - Action Sustainability Asia Pacific Pty Ltd


Hutchinson recognise the relationship between good buildings and tight buildings. We have engaged ATTSA to carry out blower door testing on a number of our recent projects and found their experience and application invaluable. We will use ATTSA again wherever we require blower door testing.

patrick campbell - HUTCHINSON BUILDERS

our clients

some interesting facts
Completed Tests
Square Meters Tested
Cubic Meters of Air

latest projects

Vanquish by Solair Properties

Spicer’s Resort at Hidden Vale

Carseldine Urban Village

contact us

Address: 88 Kallioota Street, Greenbank Q4124

Phone: 0413 934 546 or 0452 458 923

Email: info@attsa.com.au

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