Thermography

What is Thermography

Thermography uses infrared imaging to detect temperature differences on building surfaces, revealing hidden air leaks, insulation gaps, and thermal bridges. It’s especially effective when combined with airtightness testing, offering a visual map of where energy loss occurs.

At Aldas, we use infrared thermography to reveal the invisible. Whether you’re chasing Passivhaus standards or simply want a warmer, more efficient building, our thermal imaging inspections expose hidden leaks and insulation flaws—helping you seal with confidence.

Why Thermography Matters for Airtightness

•  Pinpoints air leakage: Thermographic scans highlight cold spots caused by uncontrolled airflow, helping locate leaks invisible to the naked eye.

•  Supports Passivhaus and low-energy goals: Visual confirmation of thermal integrity is essential for meeting demanding airtightness standards.

•  Validates sealing work: After sealing, thermography confirms success or reveals missed areas—ideal for quality assurance.

•  Non-invasive and fast: No need to dismantle walls or insulation. A scan can be done quickly during or after a blower door test.

Heat loss around door
Heat loss
Thermographic image of crack
Thermographic door heat loss
PlayPause
previous arrow
next arrow
 

How We Use Thermography

Thermography is a non-destructive method for assessing a building’s airtightness by using an infrared camera to visually identify air leaks. When combined with a blower door test—which creates a pressure difference between the inside and outside of a building—thermography can pinpoint cold spots where air is infiltrating, revealing weaknesses in the building envelope like insulation defects, thermal bridges, or gaps around windows and doors. This combined approach provides a powerful tool for both diagnosing problems and confirming that improvements have been made. 

Infrared imaging

An infrared camera detects heat, showing a visual representation of temperature differences on a building’s surface that are not visible to the naked eye.

Blower door test

A fan is temporarily installed in a doorway to create a pressure difference, either pressurising or depressurising the building and then the tests are carried out.

Identifying leaks

As air is forced through cracks and openings, it causes the temperature at the leak point to change, which is then visible on the thermal image as a hot/cold.

Locating problems

By combining the pressure differential from the blower door and the temperature differences shown by thermography, we can map air infiltration points . 

Informing retrofit works at
Ecotecture

Aldas Case Study

Aldas were asked to investigate the source of air leaks at Ecotecture’s commercial offices and the residence above. After a thorough investigation Aldas were able to identify and provide remedial works advice enabling the client to be informed and have a logical plan to tackle the existing issues. 

View Case Study

Where do buildings leak

A comprehensive guide by Aldas

Our homes and other buildings leak in a wide variety of places. Some are obvious (like windows that don’t close properly), others are hidden behind skirting boards, in lofts or hollow floor spaces. Our resources are a distillation of nearly 40 years of experience finding air leakage.

View

Registered with ATTMA

The Air Tightness Testing & Measurement Association (ATTMA) is a professional association dedicated to promoting technical excellence and commercial effectiveness in all air tightness testing applications. It was formed in 2002 to promote the testing and measurement industry and supports its members by extending market awareness of the technology and the members’ services.

Home of Airtightness Champions

Please contact us so we can assist with all things related to Airtightness

Contact Us
Shopping Basket
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.