M4 Corridor • South Wales → London Dew Point • RH • Surface Risk Thermal Imaging (where suitable)

Condensation Reports that stop the mould problem — properly.

If windows are dripping, corners are black, wardrobes stink, or paint is bubbling — you need a clear diagnosis. We measure humidity, temperature and dew point, check cold surfaces, and explain the real mechanism so you can fix it without guesswork.

Written report
Clear findings + practical next steps.
Independent assessment
Non-destructive, based on evidence.
Ventilation & moisture load
Extraction, air paths, usage patterns.
Landlord / tenant friendly
Useful for property management too.

Enquiry / Booking

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What you’ll get back
A reply with price and availability, plus what to expect from the visit and report.
Non-destructive inspection, limited to accessible areas at the time of visit.

What you get in a Condensation Report

A proper condensation assessment looks at air moisture, temperature, surface risk and building behaviour — so you can stop mould, protect finishes, and avoid pointless “treatments”.

Humidity, temperature & dew point
Recorded on site to judge condensation likelihood and moisture load.
Thermal imaging (cold spots & patterns)
Highlights cold bridging, insulation gaps, and areas influenced by moisture.
Ventilation & usage assessment
Extractors, trickle vents, air paths, heating patterns, occupancy moisture sources.
Written findings + recommendations
Clear summary, what’s driving it, and what fixes will actually reduce risk.

Who this is for

Homeowners
Stop mould, protect finishes, and get the right fix without trial-and-error.
Landlords & letting agents
A clear record of conditions and practical recommendations for property management.
Tenants
Independent assessment to clarify what’s causing it and how to reduce it.
Important
“Condensation” gets blamed for everything. We check properly so penetrating damp, leaks, or cold bridging don’t get missed.

Coverage: M4 corridor (South Wales to London)

We cover towns and cities along (and near) the M4 route — from South Wales through to Greater London. If you’re a little off the motorway, ask anyway.

South Wales
Cardiff • Newport • Bridgend • Swansea (and nearby)
South West
Bristol • Bath • Chippenham • The wider M4/M5 area
Thames Valley
Swindon • Marlborough • Reading • Wokingham • Slough
London
West London • Greater London (availability varies)

Typical signs we investigate

If you’ve got any of these, a condensation report is usually the right starting point:

  • Black mould in corners, behind furniture, or on cold walls
  • Streaming windows and wet sills most mornings
  • Musty odour, damp wardrobes, and ruined clothes
  • Peeling paint, bubbling wallpaper, salt staining or patchy marks
  • Cold spots around windows/doors, or rooms that never feel dry

How it works

1) Quick intake
You tell us what you’re seeing and where. We confirm scope and book a visit.
2) On-site assessment
Humidity/temperature readings, surface risk checks and thermal imaging where suitable.
3) Clear written report
Findings, mechanism, and practical recommendations tailored to the property.
Good fixes usually combine: moisture control (sources), ventilation (extraction), and sensible heating/insulation. The report tells you where to start so you don’t throw money at the wrong thing.

FAQ

A condensation report assesses humidity, temperature, dew point and cold surface risk, then explains why moisture and mould are appearing and what practical steps will reduce the problem.

Yes. Thermal imaging helps highlight cold zones and patterns consistent with cold bridging, insulation gaps, ventilation issues, and moisture influence within the fabric.

Not always. Ventilation is common, but occupancy, heating patterns, cold bridging, insulation defects, wet building fabric, and moisture-producing activities can all contribute. A report separates the likely mechanism so you can target the right fix.

No. The inspection is non-destructive and based on accessible visual inspection, measurements, and thermal imaging where suitable. If something is concealed, we’ll note it as an access limitation.