THE NHBC FOUNDATION HAS published a new guide on how best to use thermal imaging when looking for gaps in insulation.
In a typical existing British home, up to one third of the heat produced by the heating system can be lost through the roof, ceiling and walls.
The guide, published in collaboration with BSRIA, goes over what a good thermographic survey should include, gives examples of typical thermal imagery and highlights what makes a successful report.
Accuracy in measuring and reporting
The ‘Thermal imaging report guide’, gives advice on good practice and highlights the most common issues that can affect the accuracy of a thermal imaging report if the survey isn’t interpreted correctly including:
- Use of the correct equipment with the correct settings.
- Use a qualified person. The interpretation of a report is key, it is recommended that the person carrying out a thermal imaging survey is a suitably qualified thermographer.
- Suitable weather conditions at the time of the survey. Ideally, there should be no significant changes in external temperature during the 24 hours before the survey, nor should it be raining or windy during the survey. The survey should also only be conducted when there is an adequate temperature difference between inside and outside of the property.
Richard Smith, Head of Standards, Innovation & Research at NHBC, said: “The information provided by a thermal imaging report can be extremely valuable in identifying heat ‘leaks’ if they exist, that may not have been easily detected.
“With that extra information builders and customer care personnel can reassure homebuyers that their new homes will indeed save energy and money. But it’s worth noting the importance of using a qualified person, with the correct equipment and in the right environment.
“Having these elements in place are beneficial to achieving accurate and useful results. For anyone involved in the construction of new homes, the NHBC Foundation’s latest guide will also highlight how an accurate thermal imaging survey can distinguish between good construction and a potential fault.”
|The guide can be found on the NHBC’s website, here|