Thermal imaging survey and thermographic surveys of building fabric
Thermal imaging is a quick and visually effective way to identify air leakage and insulation defectsA thermal imaging survey of building fabric identifies where air leaks in or out of buildings and shows thermal insulation defects. The main benefits of a thermogrpahic survey are:
quick, non-disruptive inspection
results easily shown in pictures
show compliance with specification
get sustainability assessment credits such as BREEAM
resolve arguments with sub-contractors as to where faults are
can be used to show the effectiveness of heating and cooling installations
The thermal image, which is effectively a picture of thousands of surface temperature measurements, makes it easy to see where insulation is missing or air is leaking in or out of a building or after fabric failures such as thermal bridges and damp penetration.
Any object that is not generating or absorbing heat will tend towards the surrounding air temperature, so cold air leaking into a building will show as cold patches on the wall, floor or ceiling. Conversely, warm air leaking from a building will cause warm patches on the outside wall or roof. Thermal imaging surveys alone can be used as a quick method of finding air leaks in a building structure, and can be used alongside airtightness testing which will quantify the leaks.
BSRIA thermographic surveys are conducted by engineers qualified in accordance with ISO 18436:7 and surveys in accordance with BS EN 13187 and ISO 6781 as recommended by the UK Thermography Authority (UKTA).
Click here for free BSRIA guides to thermal imaging and airtightness
Click here for information on BSRIA's thermal imaging of mechanical and electrical building services