Thermographic Survey in Lisburn

Semi-detached houses are the most common form of housing in the wider Lisburn and Castlereagh area, followed by detached and then terraced homes, with flats making up a smaller share. That mix matters because each construction type loses heat differently. Pre-1919 homes in the city centre and around the Cathedral often use solid masonry and timber floors, while 1919-1945 properties may have early cavity walls with less predictable insulation performance. Post-1945 estates built between 1945-1980 usually rely on cavity wall construction, concrete tile roofs and concrete ground floors, so we often see thermal weakness at junctions, not just through the walls themselves.

With 48,406 residents and 19,834 households in the settlement, there is enough variety in build age and renovation history for thermal patterns to change street by street. Red brick with render or dash finishes is common, while older stone remains visible in some rural fringes, and each surface behaves differently in cold weather. The city centre and Wallace Park conservation areas also include listed buildings around Bow Street, Market Square and the Cathedral, where original fabric can still be doing the heavy lifting. Add in high rainfall, wind-driven rain and the River Lagan flood risk, and the case for thermal analysis becomes strong.

Lady Wallace Gardens, BT28 3XF, and Wellington Park, BT28 3XF, show that new building continues on the edge of town, yet many houses nearby still date from the late 1990s through the mid-2000s expansion. Homes from that period can look modern from the outside while still hiding insulation gaps, uneven cavity fill or draughts at roof junctions. Our surveyors use the thermal pattern to separate normal surface cooling from genuine heat loss. That saves time, and it points repairs in the right direction.

A thermal image is not a picture of colour for its own sake. The camera reads surface temperature and turns it into a colour scale, usually with colder areas in blue tones and warmer surfaces in red, orange or white. A cold patch on a ceiling can indicate missing insulation above, while a bright strip on a wall may show a thermal bridge at a lintel or floor edge. Our surveyors read the full pattern, not just a single spot, because the shape of the anomaly matters as much as the temperature difference.

On a red-brick terrace near Bow Street, a hot patch beside a window can be a sign of air leakage, but it can also be caused by reflection or a sun-warmed surface if the scan is done at the wrong time. That is why we avoid rushed interpretations and check the building against weather conditions, solar gain and recent heating history. Around the shopfronts in Market Square, glass and reflective trims can mislead a casual scan, so the context is always checked before a finding is written up. Each report line explains what the image shows, why it matters, and how we reached the conclusion.

Thermographic survey prices in Lisburn start from £300, and the final fee depends on the property size, access and the amount of detail needed in the report. Our survey includes external and internal infrared scans, a review of the thermal images and an annotated report that explains each issue in plain language. That report is designed to help you decide whether the next step is insulation work, ventilation improvements, a repair to a leak point or a separate diagnostic survey. For buyers looking at a house near Wallace Park or a terrace close to Bow Street, that detail can change the decision quickly.

October to March usually gives the clearest results, because winter conditions create the temperature difference the camera needs. Heating should be on for at least 2 hours before we start, and the inside-outside temperature gap needs to be at least 10C if the scan is going to show reliable contrast. Survey time is typically 1-2 hours depending on property size, then we review the images carefully before the report is issued. A well-timed survey avoids false readings and gives a sharper picture of where the property is losing heat.