Thermographic Survey in Bournemouth

Flats and maisonettes make up 36.9% of Bournemouth's housing stock - the largest single category, higher than the national average and reflecting decades of villa conversion in areas like Westbourne, Charminster, and Winton. When a large Victorian or Edwardian house is converted into flats, the original solid external walls remain, but the thermal performance of the whole building depends on how each individual flat has been maintained and whether any insulation upgrades have been applied consistently across the whole envelope.

Our inspectors regularly find that in converted properties, one flat has had its windows replaced with modern double glazing while the flat above still has single-glazed sash windows. One floor may have had cavity-fill retrofitted to an extension while the main house walls remain uninsulated solid brick. The result is a thermal patchwork - and a thermographic survey of the whole building reveals this patchwork in precise detail. For buyers purchasing individual flats within converted properties, understanding the thermal performance of the entire building envelope is essential, not just the partition walls of the specific unit.

Bournemouth also has two universities, and a large proportion of the housing stock in Boscombe, Charminster, and the streets immediately north of the town centre has served as student accommodation for decades. Buyers commissioning a thermographic camera survey on former student rental properties in Boscombe and the university streets regularly uncover displaced loft insulation, compromised cavity fill from repeated water ingress through neglected guttering, and air infiltration from failed floor hatch seals. A thermographic camera survey gives buyers in Boscombe and across Bournemouth a factual record of thermal defects before committing to purchase.

• Solid-wall Victorian and Edwardian houses with no cavity fill - high baseline heat loss
• Inconsistent insulation upgrades across converted Victorian villa blocks
• Coastal render cracking from salt-laden air creating moisture pathways
• Failed timber sash window frame seals on pre-1920 properties
• Cavity fill voids in 1970s-1990s extensions to original older houses
• Missing or displaced loft insulation in former student rental properties
• Thermal bridges at floor plate level in tall Victorian conversions
• Cold spots at service penetrations in post-2000 apartment blocks

Properties in BH1, BH2, BH4, BH5, and along the clifftop streets of Boscombe and Southbourne face south and west into prevailing winds carrying sea moisture and salt. Over years of exposure, this salt-laden air etches into lime mortar pointing, opens micro-cracks in sand-cement render, and degrades the rubber seals around window and door frames. These degradation paths are not a sign of poor build quality - they are the normal consequence of a coastal location - but they create consistent routes for moisture to enter the wall construction.

Our inspectors use infrared imaging to map these moisture pathways in detail. Water within a wall construction cools as it evaporates, and even small amounts of active moisture - far below the threshold detectable with a conventional damp meter in isolation - produce a characteristic cold signature on an infrared image. We verify every thermal anomaly with a calibrated contact moisture meter reading before including it in the report, so buyers receive confirmed findings rather than unverified camera artefacts.

For seafront apartment blocks and clifftop properties in Bournemouth, our inspectors also check the external balcony and parapet wall junctions - areas of consistent moisture ingress where waterproof membranes have degraded or where thermal bridges allow condensation to form on the underside of concrete floor slabs. These findings are directly relevant to maintenance planning and service charge estimates for leasehold buyers.

New build activity in Bournemouth has been concentrated in apartment developments rather than houses, reflecting the high land values in a coastal location. Developments at Alsafa Heights in Alum Chine (BH4) and West Cliff Gardens (BH2) represent the current new-build market, with David Wilson Homes listing properties in the area from £319,999 to £617,500. The average new-build sale price in the Bournemouth postcode area reached £382,000 in 2025, up 5% year on year, reflecting continued demand from buyers looking for lower-maintenance coastal living.

Apartment developments carry specific thermal risks that differ from houses. Thermal bridges at the concrete floor plate between storeys are the most frequently identified defect on our apartment surveys - where the floor slab passes through the external wall, it creates a direct path for heat to escape from the heated flat into the external air. Modern building regulations require this junction to be broken with an insulating element, but our inspectors consistently find this detail executed incorrectly or omitted on otherwise well-finished developments.

Balcony connections are a second common failing. Concrete balcony slabs projecting from the heated floor plate act as external heat radiators unless they are separated from the floor slab by a thermal break element. Identifying this defect before completion gives buyers a clear and documented basis to require the developer to address it under the building regulations compliance obligations that attach to the property on practical completion.

Our Bournemouth surveys are structured around the specific property type, age, and coastal exposure of each building. The check list is adapted before each survey based on the pre-survey information you provide and our knowledge of local construction patterns. All inspections comply with BS EN 13187, the British Standard for qualitative detection of thermal irregularities in building envelopes, so our findings are reproducible and defensible in any buyer-seller negotiation.

• External walls: full infrared scan for cavity insulation voids, solid wall heat loss mapping, and moisture signatures in render or pointing
• Window and door openings: thermal bridge assessment at reveals, cills, and heads, frame seal integrity check, draught infiltration identification
• Roof and ceiling plane: insulation completeness scan from below, gaps around services, access hatches, and tank bases identified
• Floor plate junctions in flats and apartments: concrete slab thermal bridge assessment, balcony connection check
• Ground floor and wall-floor junction: cold bridge check at the junction between external walls and ground floor slabs or suspended floors
• Coastal-facing elevations: specific attention to south and west-facing walls for moisture ingress behind render, failed pointing, and frame seal deterioration
• Parapet and balcony edges on apartment blocks: waterproof membrane condition assessment via thermal signature
• Service penetrations: inspection around pipes and cables passing through the building envelope, common air infiltration points in post-1970s construction
• Listed building fabric: condition assessment of lime mortar construction calibrated against heritage building benchmarks

For former student rental properties in areas like Boscombe and Charminster, we carry out an enhanced loft inspection protocol, checking for insulation displacement, moisture staining at eaves, and blocked ventilation gaps that are common in properties where loft space has been used for informal storage over multiple tenancies. These findings frequently account for a significant proportion of the property's total heat loss.

Bournemouth's regeneration programme, led by Legal and General's £330 million investment in Lansdowne and Boscombe, is bringing conversion and refurbishment projects that create new thermal bridging risks where old construction meets new. Our inspectors are experienced in assessing these mixed-fabric buildings and identifying the junctions between different construction eras that are most likely to generate heat-loss anomalies.