Thermographic Survey in Edinburgh

A thermographic survey uses a calibrated infrared camera to record the heat radiation emitted by building surfaces. Different materials release heat at different rates, and the camera maps those temperature variations as a colour image. Warm areas appear in reds and yellows; cold zones register in blues and purples. Anomalies in those patterns - cold patches in walls, temperature bands at ceiling-wall junctions, elevated temperatures at electrical panels - indicate specific defects that visual inspection cannot identify without destructive investigation.

Reliable heat-loss surveys require a minimum 10-degree Celsius temperature differential between the heated interior and the external air. In Edinburgh, winter temperatures routinely provide the thermal contrast needed, and the city's climate makes it one of the best locations in the UK for thermographic survey work. We confirm booking dates against forecast conditions rather than scheduling on fixed dates in advance, ensuring every survey we carry out meets the threshold needed for accurate and evidentially robust thermal imaging.

The inspection is entirely non-invasive and involves no contact with the building fabric. Our assessors work through each property systematically, scanning all external walls from inside, ceilings at wall junctions, loft spaces where accessible, ground floors, window reveals, and all consumer units and electrical distribution boards. Every thermal anomaly is captured in both infrared and standard visible-light photography, annotated with its exact location, and classified by severity in our written report with a recommended course of action.

A thermographic survey in Edinburgh carries particular weight for compliance and grant purposes. The Scottish Government's Heat in Buildings Strategy and associated programmes have increased scrutiny of actual thermal performance in older properties, and our reports - which document real-world heat loss rather than EPC model estimates - are structured to support Heat Network Zoning assessments, grant funding applications under the Home Energy Scotland scheme, and planning applications for insulation works in conservation areas and listed buildings.

Sash and case windows are the most common primary heat loss location in Edinburgh's historic properties, and our surveys quantify that loss in a way that visual inspection cannot. A poorly-sealed sash window in a Georgian townhouse can account for a significant proportion of a room's total heat loss, particularly where the lower sash has dropped and the meeting rail no longer closes tightly against its rebate. Thermal imaging records the cold air infiltration entering along the frame perimeter, identifying whether the primary source is the glass, the frame, or the meeting rail seal - information that determines whether draught-sealing alone will suffice or whether the window needs more significant attention.

Slate roofs on Edinburgh's older properties are another area where thermal surveys reveal findings that surprise our clients. When a slate roof remains watertight but individual slates have slipped or the battens below have deteriorated, gaps in the roof covering allow cold air to circulate in the roof void. That circulation reduces the effective performance of loft insulation by a significant margin. Thermal imaging from inside the loft identifies the cold zones in the insulation layer that correspond to these air paths, allowing targeted ridge and valley repairs rather than full roof replacement or insulation upgrade programmes that would not address the underlying air movement problem.

Communal stairwells in Edinburgh's tenements are a consistent thermal vulnerability in top-floor and end-of-terrace flats. The stairwell is typically unheated and often poorly sealed at the top landing, creating a cold air column that drives heat loss through the wall and ceiling surfaces that the individual flat shares with it. Our thermal surveys identify the extent and severity of this effect from inside the flat, giving owners and their factors a quantified assessment of the heat loss pathway that can be addressed through stairwell door sealing, communal area insulation, or both.

• Cold air infiltration around sash and case window frames in Old Town and New Town properties
• Heat loss through solid sandstone walls where original lime plaster has been replaced
• Thermal bridging at cast iron structural elements in Victorian tenements
• Slipped slate roofing creating air infiltration that reduces loft insulation effectiveness
• Overheating consumer units in tenements that have not had a full rewire since the 1980s
• Cold floor zones in ground-floor flats where damp proof membrane has failed under solid floors

Parts of Edinburgh face flood risk from the Water of Leith and its tributaries, which run through the city past Dean Village, Stockbridge, and Leith. Coastal areas including Portobello and Leith face tidal and storm surge flood risk, and surface water flooding during heavy rainfall events is a concern across lower-lying parts of the city. SEPA (the Scottish Environment Protection Agency) maintains detailed flood maps covering Edinburgh, and buyers in flood risk areas should check SEPA's Flood Risk Index before committing to purchase.

Properties that have experienced flooding can retain moisture in ground-floor walls, floor screeds, and subfloor voids long after they appear dry to visual inspection. Our thermographic survey detects hidden moisture by identifying the temperature differential between wet and dry building fabric - wet material retains heat differently from dry material, and the pattern is clearly visible in thermal imaging. This makes our survey particularly valuable as a post-remediation check for flood-affected properties, giving owners independent confirmation that drying work has been effective before accepting contractor sign-off.

Edinburgh also has a legacy of coal mining in its southern and eastern areas, and properties in those zones may be affected by historic mine workings. Where ground has settled above old workings, micro-cracks open at mortar joints, extension junctions, and service entry points. Our thermal cameras identify the cold air infiltration entering through those openings during heating season surveys. We flag in our report where anomaly patterns are consistent with structural movement rather than isolated sealing failure, and we recommend follow-up by a structural engineer where that pattern is present across multiple locations in the building.

The Old Town's historic closes, tenements, and converted commercial buildings offer some of the most complex thermal survey work our inspectors encounter. Stone construction in these buildings varies from the original medieval rubble core to later Georgian ashlar facing, and the thermal performance differs significantly across different elevations and storeys of the same building. Our surveys in the Old Town consistently identify significant variation within a single property that no EPC model captures, and our reports provide the granular data needed to plan targeted works that address the highest-priority losses first.

In the Georgian New Town, the uniformity of construction across the planned street grid means that thermal patterns are relatively consistent between properties of the same era and configuration. However, the New Town's terrace format creates specific thermal vulnerability at the end-of-terrace position, where an exposed flank wall loses heat on three sides rather than one. Our surveys identify whether the exposed flank wall of a New Town property has been insulated in any previous programme of works, and whether any insulation installed is performing as expected or has been compromised by moisture or structural movement.

Conservation area properties in Marchmont and Morningside are among the most common single-family Victorian villas in our Edinburgh caseload. These properties typically have a mix of construction eras - an original Victorian villa body, Victorian or Edwardian rear extensions, and in many cases a more recent loft conversion or garden room addition. Each addition introduces new junctions between different construction systems, and those junctions are where thermal bridging and air infiltration are most likely to occur. Our surveys map each junction explicitly, giving owners a full picture of thermal performance across the entire building rather than a single figure that averages across very different construction elements.

The standard residential survey covers the complete building envelope and all accessible internal surfaces. All external walls are scanned from inside the property, with our inspectors mapping temperature variation across each elevation from floor to ceiling. In Edinburgh's tenement flats, this includes scanning shared walls with the common stairwell and party walls with neighbouring properties, which are frequent sources of thermal loss that owners often attribute incorrectly to their own heating system. Loft spaces are inspected where safe access is available, with particular attention to the insulation layer at ceiling level and the wall plate junction.

Ground floors are surveyed regardless of floor construction type. Solid concrete floors with failed or absent damp proof membranes register as cold patches relative to surrounding screed. In Edinburgh's tenement ground-floor flats, where the floor often sits over a cold, unventilated sub-floor void or directly on a stone base course, thermal imaging maps the extent and pattern of heat loss from floor surfaces with a precision that informs targeted remediation rather than wholesale floor lifting. Suspended timber floors in Victorian villas are scanned to identify where the underfloor ventilation is bridging any insulation installed in the void.

Electrical components are included in the standard survey scope. Consumer units, distribution boards, and visible wiring runs are scanned for thermal anomalies indicating overloading, loose connections, or ageing insulation. Edinburgh's tenement stock includes a significant proportion of properties with consumer units that have not been updated since the 1970s or 1980s, and our thermal camera identifies overheating circuits and panels without opening any electrical enclosure. All electrical findings are clearly separated from building fabric defects in our report and flagged for follow-up by a registered electrician.

Service penetrations through external walls are surveyed as a distinct category. In Edinburgh's older properties, these penetrations are often sealed with original lime mortar that has dried and cracked, or with poorly-selected modern materials that shrink away from the masonry. Our thermal camera identifies cold air infiltration entering through each unsealed or poorly-sealed penetration from inside the property. The report specifies the exact location of each finding and the appropriate sealing approach, with notes on material compatibility for lime mortar buildings where synthetic sealants would damage the original fabric.