A number of requirements and external conditions are needed in order to carry out a successful thermographic survey.
Thermographic surveys are a powerful tool for identifying areas of heat loss, moisture intrusion, and building envelope inefficiencies. However, to ensure the accuracy of these surveys, certain conditions must be met. Below, we outline the key requirements for conducting a successful thermographic survey and provide important details on assumptions, inclusions, and exclusions.
Recommended Conditions for a Thermographic Survey
To achieve the best results, it is crucial that the following conditions are met:
- Stable Ambient Air Temperature: The ambient air temperature should remain within ± 10ºC for the 24 hours preceding the survey (or 12 hours for lightweight fabric).
- Temperature Difference: There must be at least a 10ºC difference between the internal and external temperatures for at least 24 hours before the test.
- Absence of Direct Solar Radiation: For optimal results, the inspected surfaces should be free from direct solar radiation (sunlight) for at least 4 hours prior to survey start – longer if the building has significant thermal mass, such as solid brick walls.
- Stable Survey Conditions: The ambient air temperature should remain within ± 3ºC for duration of the survey and the hour preceding it.
- Dry Conditions: There should be no precipitation just prior to or during the survey, and the building surfaces to be inspected must be dry during the survey.
- Low Wind Speeds: Wind speeds should be below below 10m/s to avoid inaccurate readings.
Assumptions, Inclusions & Exclusions
- Timing: Survey are typically conducted in the afternoon or at night to reduce interference from solar gain.
- Access: Full internal and external access will be required for the areas being surveyed.
- Insulation Standards: Continuity of Insulation surveys will meet the requirements of BRE report 176 and the more recent BS EN 13187: 1999 standards.
- Roof Inspections: Only the sections of roofs visible from the ground or suitable adjacent buildings will be included in this quote. If specialised equipment, such as lifting equipment, is required then additional charges will apply.
- Retesting: Any retesting for defective areas will be charged at an additional cost.
How We Can Help…
Unlike many of our competitors, we go beyond basic assessments. Our team of BREEAM-qualified thermographers conduct both internal and external surveys, providing a comprehensive analysis of your building’s energy performance. Whether it’s a residential, commercial, new-build or existing property or development, our expertise ensures accurate identification and a comprehensive understanding of where heat is being lost.
We use FLIR software to process and interpret thermal images, resulting in precise and reliable data. This advanced processing leads to detailed, accurate reporting, empowering you to take actionable steps toward improving energy efficiency.
What’s Next?
Ready to reduce energy loss and improve the efficiency of your building? Contact us today to schedule your thermographic survey. Our team will guide you through the process, from initial consultation to actionable recommendations, helping you meet your energy-saving goals and reduce costs.
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