Thermographic Survey in Salisbury

Salisbury's housing mix is broad, and the numbers show it. Detached homes account for 26.1% of the stock, semi-detached homes 30.5%, terraced homes 24.3%, flats, maisonettes or apartments 18.2%, and other property types 0.9%. That spread means our surveys need to read everything from compact city flats to larger family houses on the edge of the built-up area, and each one leaks heat in a different way. The result is a city where one infrared scan can point to loft losses in a 1970s semi, then switch to solid wall heat loss in a pre-1919 terrace a few streets away.

Older Salisbury buildings often use local flint, red brick, timber framing with infill panels, and render over mixed substrates. In the historic core, especially around the Cathedral Close, High Street, Queen Street and New Canal, many homes sit within a large Conservation Area and a high concentration of Listed Buildings. Those properties need a careful, non-invasive approach, because thermal imaging lets us identify cold bridges, missing insulation and damp-related heat loss without opening up historic fabric. Newer homes, including brick and render plots at Longhedge Village in SP4 6BU, Hampton Park in SP5 3BP and St Peter's Place in SP1 2EE, can still show heat loss where detailing around roof spaces, reveals and service runs has been missed.

Ground conditions matter as well. Salisbury sits on Cretaceous chalk, with River Terrace Deposits in the Avon valley and Head Deposits on higher ground, so shrink-swell risk is usually low to moderate on chalk but can rise where clay is present in the superficial deposits. That mix can affect floor edges, extension junctions and moisture behaviour around older walls, especially where mature trees and altered drainage sit nearby. Add the flood risk from the five rivers, the Avon, Nadder, Wylye, Bourne and Ebble, and a thermal survey becomes a practical first step for spotting where hidden moisture and wasted heat are working together.

Thermal images use a colour scale to show temperature differences across a surface. Cooler areas usually appear blue or purple, while warmer areas move towards red, orange or white, depending on the palette in use. That colour change is only part of the story, because a bright patch on a wall can mean heat loss, trapped moisture, direct sunlight or even a reflected surface, so our surveyors always read the image in context.

Salisbury properties create some distinctive patterns. A cold streak beneath a bedroom window in a 1960s semi on Hampton Park can point to failed cavity fill or a weak reveal detail, while a bright line at a ceiling edge in a terrace near Queen Street can indicate thermal bridging or a missed loft insulation zone. We compare the thermal view with what we can see on site, then note why the reading matters and what should be checked next.

False readings need care, especially on sunny elevations, reflective glass and metal finishes. Solar gain can warm a wall for hours after the sun has moved on, and a shiny surface can reflect nearby heat sources, so we avoid treating a single image as a final answer. Our reports explain each finding in plain English, mark up the photograph and set out the likely cause, which makes the next repair step much easier to plan.

A thermal imaging survey in Salisbury starts from £300, and the fee covers the inspection, the infrared images and a written report that explains each finding. That makes it a lower-cost route into building performance than opening up walls or starting insulation work blind. For owners of properties near High Street, the Cathedral Close or the newer developments at SP4 6BU and SP5 3BP, it is often the quickest way to see where the biggest heat losses sit.

Conditions shape the value of the scan, so the best results come from October to March, with the heating on for at least 2 hours before the appointment and at least 10C between inside and outside. If the property is a larger detached house, a converted flat or a listed building, the visit can take a little longer because there are more junctions, elevations and hidden details to check. Our surveyors then turn the images into a clear report that helps you choose the right repairs, not the loudest ones.