Airtightness & Blower Door Investigations

The customer was looking for a proper diagnostic assessment of their property (loft and kitchen) to understand where air leakage and heat loss were actually occurring, before committing to any insulation or draught-proofing works.

On-site Home Health Diagnostic Survey combining a blower door test, smoke testing and a thermal imaging survey.

The thermal images and smoke tests showed exactly where air leakage and heat loss were occurring. George explained the building physics behind each issue so the customer understood the causes, the risks they create and how they relate to each other.

A detailed, well-structured written report was delivered, with clear explanations of the causes, risks and recommended remedial options. The recommendations were honest and practical about priorities, costs and what would (and would not) make a real difference.

The customer received a proper diagnostic assessment — not a superficial inspection. They were extremely impressed with the professionalism and depth of knowledge and would have no hesitation in recommending the service.

The customer needed a structured, evidence-based assessment of their whole flat — not a tick-box survey — to understand exactly where heat, comfort and indoor-environment problems were originating, and to receive a fully-costed schedule of recommended improvements they could prioritise and budget against.

On-site Home Health Diagnostic Survey of the flat combining: visual inspection room by room, FLIR thermal imaging of all critical surfaces (walls, ceilings, lintels, reveals, floor junctions, service penetrations), surface temperature and humidity readings, defect identification against building-performance criteria, and conversion of the findings into a costed improvement schedule.

Multiple thermal defects identified and measured across the flat: localised thermal bridges at wall/ceiling corners (cold spots down to 19.1 °C against room baseline ~21 °C), pronounced cold bands along door-head lintels (16.8 °C → 29.4 °C across the same image), a cooler perimeter band at the wall/floor junction (evidence of a heat-loss path through the slab edge), and uniformly cool internal wall surfaces giving an accurate baseline for the costed-improvement comparison.

A thorough written diagnostic report was delivered covering each defect, the building-science reason for it, and a fully-costed schedule of proposed improvements ranked by impact and cost. The recommendations covered thermal-bridge mitigation, perimeter detailing, surface-temperature improvement and a wider Building Performance Strategy the client can implement in stages.

The customer received a proper, evidence-based assessment with full costings for every proposed improvement — exactly what they were looking for. They left a 5-star Checkatrade review describing the report as 'very thorough' with full costings for all proposed improvements, and a glowing recommendation.