A number of requirements and external conditions are needed in order to carry out a successful thermographic survey.
Information on the recommended conditions to conduct a thermographic survey are listed below. Any assumptions, inclusions and exclusions are also listed.
- Ambient air temperature within ± 10ºC for preceding 24 hours (12 hours for lightweight fabric)
- Internal to ambient air temperature difference _ 10ºC for at least 24 hours prior to test.
- Necessary surfaces free of direct solar radiation for at least 4 hours prior to survey start – greater if the structure has a thermal mass (eg a solid brick wall)
- Ambient air temperature within ± 3ºC for duration of survey and proceeding hour
- Free from precipitation just prior to or during survey
- The building surfaces to be inspected are to be dry
- Wind speed below 10m/s
Assumptions, Inclusions & Exclusions
- The survey must usually be conducted in the afternoon/night. Full access internally and externally will be required for the subject areas.
- Continuity of Insulation surveys will meet the requirements of BRE report 176 and the more recent BS EN 13187: 1999
- Only those sections of rooves visible from the ground or suitable adjacent buildings will be included in this quote.
- Should lifting equipment be required this will be at additional cost.
- Any retest for defective areas will be at an additional cost.
How we can help
Unlike many of our competitors, our BREEAM-qualified thermographers perform internal and external assessments to provide a comprehensive understanding of where heat is being lost. They can carry out surveys on residential or commercial properties, across new build developments, or existing buildings.
Our experienced team treat each image using FLIR software to ensure the correct information is being processed, then analyze the processed images to produce very accurate results, leading to robust reporting and high-quality output.
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