Infrared thermal imaging to detect heat loss and hidden defects








Our thermal imaging specialists carry out detailed infrared surveys across Eastbourne, from BN21 flats near the Town Centre to larger homes in BN20 around Meads and Old Town. Infrared cameras detect surface temperature variations to 0.1C accuracy, so we can show where warmth is escaping through a wall, roof or window frame before the problem turns up in the energy bill. The survey is non-invasive and non-destructive, and the camera sees what the eye misses.
Eastbourne's housing mix gives thermal imaging a clear job to do. Home.co.uk shows an average asking price of £333,016, with asking prices ranging from £269,308 in BN21 to £427,962 in BN20, while homedata.co.uk records show a sold-price average of £255,000 in March 2026, up 0.8% from March 2025. The population rose by 2.3% between the 2011 and 2021 Census to 101,686, and home.co.uk lists 619 sold properties over the last 12 months. In a town with heritage streets, coastal flats and retrofitted homes, hidden heat loss can sit inside a building long after the viewing stage.

A thermal imaging survey shows where heat is escaping, and Eastbourne homes often reveal the pattern in minutes. We pick up missing or settled cavity wall insulation, cold bridging at junctions, air leakage around doors and windows, and patchy roof insulation that leaves a strip of blue across the ceiling line. Underfloor heating faults and electrical hotspots can also appear as abnormal warm spots, which is useful in converted flats and later extensions.
The camera does not guess at the cause. It records a surface temperature map that our surveyors read against the building's layout, the weather and the heating state inside the property. In a BN21 flat or a Meads townhouse, that can mean the difference between a small draught seal and a much larger insulation defect.

Eastbourne has a strong Victorian and Edwardian legacy, with conservation areas and listed buildings concentrated in Meads, the Town Centre and along the seafront. Homes from those periods were not built to modern insulation standards, so solid masonry walls, original roof spaces and older window openings often lose heat faster than a newer build. That is exactly the kind of fabric pattern our infrared surveys expose.
The town's setting also matters. Eastbourne sits on the edge of the South Downs, where chalk is the dominant geology, while the wider East Sussex landscape also includes greensand and Wealden Clay. In low-lying parts of town, surface water flooding can leave damp traces that show up as cooler patches, and coastal exposure near Beachy Head can drive wind-washed heat loss across external walls and roof edges.
Retrofitted homes can look smart from the street and still leak heat through loft hatches, service penetrations, chimney breasts and poorly fitted replacement windows. Our surveyors often find that the older the property, the more important it is to check the junctions where insulation was added later rather than built in from the start.
Thermal imaging turns invisible waste into a clear priority list. In many homes, around 25% of heat is lost through the roof, 35% through walls and 15% through windows, so one bad detail can have a bigger effect than the owner expects. Our report highlights the surface pattern, then shows which upgrade is likely to cut loss fastest.
That approach helps with EPC improvements because you are not guessing where the energy is disappearing. A top-up in the loft, sealing around penetrations or correcting missing insulation around a cold bridge can often pay back faster than replacing every window in the house. In Eastbourne, where asking prices span from £269,308 in BN21 to £427,962 in BN20, it makes sense to protect both comfort and running costs before winter bites.

Choose your Eastbourne appointment and tell us the property type, whether it is a flat in BN21 or a house in BN20, and any problem areas you want checked.
October to March gives the best thermal contrast, and we look for at least a 10C difference between inside and outside before we scan.
Keep the heating on for at least 2 hours before the survey begins so the building fabric reaches a stable temperature.
Our surveyor carries out external and internal infrared scans, then checks junctions, ceilings, walls, windows and service penetrations.
Each frame is reviewed, annotated and compared with the building layout so false readings from reflections or solar gain are filtered out.
You get a clear report with thermal images, findings and practical recommendations that can be used for repairs, upgrades or further testing.
Thermal images use a colour scale, usually with colder areas shown in blue and warmer areas shown in red or white. A cooler patch does not automatically mean a defect, but it does show a surface temperature difference that deserves a closer look. Our surveyors explain each image so the pattern is readable without needing a technical background in thermodynamics.
Bright winter sun, reflective glazing and warm pipes can all create false readings, which is why the survey is scheduled carefully and not treated as a quick snapshot. On a south-facing wall, especially in a seafront property, solar gain can make the masonry look warmer than it really is. We take those effects into account, then separate them from genuine heat loss, damp-related cooling or insulation gaps.
An Eastbourne homeowner can usually see the story in the image once the annotations are added. A blue band above a ceiling line may point to missing loft insulation, while a colder strip around a window opening can point to poor sealing or a cold bridge. Our report turns those patterns into actions, so the next step is a repair, a top-up or a further moisture test rather than a guess.
In Meads, the Town Centre and the seafront conservation streets, our thermographic surveys often pick up heat leaking through original windows, cold spots around chimney breasts and patchy loft insulation above older ceilings. BN21 flats also show service penetrations, extract fan gaps and poorly sealed window reveals, especially where a later refurbishment has mixed old and new fabric. Single-glazed windows and older roof details often stand out immediately on the infrared camera.
Where cavity wall insulation has been retrofitted, our images can reveal voids or settlement in parts of the wall, leaving stripes of colder masonry. On exposed or low-lying plots, wind-driven rain and surface water can create moisture signatures at ground-floor corners, around door thresholds and below window cills. We do not treat a thermal image as a diagnosis on its own, but it tells you exactly where to look next.

It can detect heat loss through walls, roofs, floors and windows, missing or collapsed cavity wall insulation, cold bridging, draughts, damp-related temperature anomalies, underfloor heating faults and electrical hotspots. Our cameras read surface patterns, so the findings are strongest when the house has been heated for at least 2 hours and there is at least a 10C difference between inside and outside. It is a screening tool that points to the issue quickly, then our report explains what the image is showing.
Thermographic surveys in Eastbourne start from £300, depending on property size, access and whether the home is a flat in BN21 or a larger house in BN20. The quote normally includes external and internal infrared scans plus an annotated report. Homes with more levels, extensions or awkward roof access can take longer and may sit at a higher price point.
October to March is best because the temperature difference between inside and outside is usually strong enough for clear thermal contrast. We look for at least a 10C difference, then scan after the heating has been on for 2 hours or more. Warm spring or summer days can still work in some cases, but the images are less decisive and solar gain can blur the picture.
Most Eastbourne appointments take 1-2 hours, depending on property size and how many rooms need to be checked. A compact flat can be quicker, while a larger Meads house or a property with multiple extensions takes longer. The analysis phase happens after the visit, when our surveyors annotate the images and prepare the findings.
It can highlight the temperature patterns that often go with damp or moisture ingress. Cooler areas around window heads, floor edges or external corners may point to wet materials, but the image alone does not identify the exact cause. We use the thermal picture to show where follow-up testing should start, especially in coastal or low-lying parts of Eastbourne.
Yes, a little preparation helps the images read clearly. Please heat the property for at least 2 hours before the appointment, close windows and doors, and avoid opening them during the survey unless our surveyor asks. If the weather has been very sunny, we may also suggest a later appointment so solar gain does not distort the results.
From £80
Energy performance certificate for a clearer view of running costs
Price on request
A practical survey for standard homes with defect checks
Price on request
Detailed inspection for older, altered or complex buildings
Price on request
RICS valuation support for ownership and redemption figures
Thermographic surveys in Eastbourne start from £300. That price covers a targeted infrared inspection, external and internal scans where access allows, and a report with annotated images and practical recommendations. We price by property size and complexity, so a BN21 flat can sit differently to a multi-storey house in BN20.
Accuracy matters more than speed. The best results come in October to March, with at least a 10C difference between inside and outside and the heating running for 2 hours before the survey begins. Those conditions make cold bridges, insulation gaps and draught paths stand out cleanly, which is why we often advise booking before the first cold snap.
After the visit, our surveyors review each image and explain what to fix first. The report is written so a homeowner can hand it to an installer, contractor or managing agent without having to translate the findings. That is where the survey stops being a picture set and starts becoming a plan.
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Infrared thermal imaging to detect heat loss and hidden defects
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Homemove is a trading name of HM Haus Group Ltd (Company No. 13873779, registered in England & Wales). Homemove Mortgages Ltd (Company No. 15947693) is an Appointed Representative of TMG Direct Limited, trading as TMG Mortgage Network, which is authorised and regulated by the Financial Conduct Authority (FRN 786245). Homemove Mortgages Ltd is entered on the FCA Register as an Appointed Representative (FRN 1022429). You can check registrations at NewRegister or by calling 0800 111 6768.