Thermal Imaging of Building Fabric

A best practice guide for continuous insulation By Colin Pearson

IR Thermal Image of a Building
IR Thermal Image of a Building

Online — Uncontrolled heat loss and gain through the walls and roof of a building is no longer acceptable. It leads to excessive use of fuel, causes pollution and increases CO2 emissions.

UK and European regulations have now been tightened up so that not only must good insulation be designed and specified, but achievement of required performance and the quality of installation must be proved.

This guide is intended to help building owners, designers, surveyors and contractors assess the thermal performance of building envelopes by using infrared thermographic techniques.

Application of infrared thermography requires a sound understanding of infrared theory, building design/construction and the thermal transfer mechanisms that operate to remove or add heat to a building.

A thermal image makes it simpler to see where insulation is missing or air is leaking in or out of a building. The camera designed for this purpose makes an image from thousands of surface temperature measurements.

Any object that is not transmitting, generating or absorbing heat will take on the surrounding air temperature, so cold air leaking into a building (or missing insulation on a heated building) will cause cold patches on the wall, floor or ceiling.

Conversely, warm air leaking from a building will cause warm patches on the outside of a wall or roof.

The Free Guide is available online at the IRT Surveys website (see link below).

IRT Surveys Ltd.
Infrared Building and Energy Specialists
28 Greenmarket
Dundee, Scotland

m: 07986 045 964
t: 01382 228 700
f: 01382 201 680