Damp and mould inspection in Porto
Moisture is one of the most frequent and costly problems in Portuguese homes. We use infrared thermal imaging to see active damp that a visual inspection cannot, then tell you where it comes from.
What we check
- Rising damp at the base of ground-floor and basement walls
- Water ingress from roofs, terraces, windows and plumbing leaks
- Condensation and mould risk from poor ventilation and cold bridges
- Concealed moisture behind freshly painted walls, new plaster and tiles
- Source and extent: where the water comes from and how far it has spread

Why it matters
Left undetected, water ingress, rising damp and hidden leaks lead to structural deterioration, mould growth and expensive repairs.
A thermal camera shows differences in surface temperature that can point to moisture behind a finish. We confirm with a moisture meter and with what we can see, so you get a diagnosis rather than a pretty picture.
Use it before buying, to negotiate with confidence, or at home, to plan the right repair instead of repainting over the problem.
How we rank what we find
The same four levels run through every OHI report, so you always know what to deal with first.
- Immediate
Active leak
Water coming through now: plumbing, roof or terrace. Stop it first.
- Urgent
Mould in occupied rooms
Needs the cause fixed, not just cleaned.
- Recommended
Rising damp treatment
Plan the proper repair rather than repainting.
- Monitor
Condensation risk
Ventilate and maintain, then check again.
How it works
Send us the listing
A link or the address, plus your phone number. Email, WhatsApp or the form, whichever is easier.
We send your quote
You get a clear quote and a date. We reply within one business day.
Inspection day
A licensed civil engineer inspects the property, photographs every finding and measures what can be measured.
Report in 48 hours
Your report arrives in English and Portuguese, findings ranked by priority. You decide what to do before the CPCV.
Questions about this service
Can thermal imaging find damp behind fresh paint?
It can reveal temperature differences that suggest moisture behind paint, new plaster and tiles. We confirm with a moisture meter and the physical evidence.
Is the thermal camera enough on its own?
No. It is one tool. The report combines thermal images, moisture readings and visual inspection to identify the source.
Is mould a health risk?
Persistent damp and mould can affect indoor air quality. If someone in the home has health concerns, speak to a doctor as well as fixing the cause.
How do I get a quote?
Send us a message with the address and what you have noticed. We quote within one business day.
Ready when you are.
Send us the listing, the address or a short description. You get a quote and a date within one business day.