Exterior thermal imaging of building envelopes
Passivhaus and high-efficiency buildings
From inside, thermography is done room by room: the picture is fragmented, depends on the furniture and on being able to enter every home. From outside, the drone sees the whole envelope in one continuous view, including upper floors, slab edges, roof junctions and parapets that are barely visible from the ground.
In a Passivhaus the defects are small and localised, which is exactly why reading the whole façade at once matters: a slab edge without a thermal break or a section of badly fitted insulation shows up as a line or a patch warmer than the rest of the wall.
What's included- Thermal bridges at slabs, columns, lintels and window frames
- Gaps or missing insulation in façades and roofs
- Air leaks through the envelope, using the combined method
- Deliverable
- Thermal mosaic of every façade and the roof, numbered anomalies and report
- When
- November to March, at dawn or at night
Combined method with the blower door test
Exterior thermography during the pressurisation test
A blower door test measures how much air leaks out of a building, but not where. If the test is run under pressurisation while we fly, the warmer indoor air escapes through every leak and heats the façade right at that point. From outside, each leak shows up as a localised warm spot.
It uses a visit that is already scheduled, nobody has to enter the homes, and the result is a façade drawing with the leaks marked, ready to be fixed before the test is repeated.
