Damp flagged in a survey? Get an independent
diagnosis before any work is carried out.
No products. No treatments. Independent, diagnostic advice.
Covering Worcestershire, Herefordshire and Gloucestershire
(the Three Counties), as well as surrounding areas.
✓ Evidence-based damp and moisture investigation
✓ Clear explanation of the cause and what to do next
✓ Practical guidance for buyers, sellers and homeowners after a survey
A correct diagnosis can prevent thousands being spent on unnecessary damp treatment.
Customer Reviews
⭐ 5.0 rating from verified Google reviews
Vanessa Canzini
⭐️⭐️⭐️⭐️⭐️
“Simply superb advice and service from Stephen. Such a knowledgeable, honest and friendly man, I couldn't recommend him more highly. I'm so happy with the assessment he made and the speed with which he delivered his findings and recommendations. Thank you Stephen!”
Jenny Black
⭐️⭐️⭐️⭐️⭐️
“I asked Thomas Damp Surveys to carry out an inspection on my property following a leak I had form guttering and faulty plumbing in a bathroom that had not been spotted. I found the service to be extremely thorough, with every concern addressed and fully explained. The surveyor arrived promptly, was professional and also personable and his report arrived within the same day. He gave clear evidence of his findings and good advice regarding remedial action to prevent me spending money unnecessarily.i would not hesitate to recommend this company.”
Scott Lee
⭐️⭐️⭐️⭐️⭐️
“Thomas damp surveys are an independent damp survey specialists so they aren’t looking to get work out of you post damp surveys. What you get is honest and well informed survey with practical advice. I followed up with a phone call to Stephen who was a lovely chap and we discussed at length the damp in my property and best corse of action noting the property noting it is rented.
We can up with a good plan together to target the key areas and improve the situation for my tenant.
Very very happy and impressed with the service would 100% recommend.”
Who This Service Is For
• Buyers following a survey recommending further investigation of damp or moisture
• Homeowners concerned about damp, mould or condensation
• Sellers addressing damp concerns before marketing a property
• Landlords needing clear evidence of damp or mould issues
• Estate agents needing clear answers so a sale can proceed
Independent damp investigation with clear, evidence-based
diagnosis — no sales agenda.
Thomas Damp Surveys provides independent damp and moisture assessments to identify the true cause of damp or mould.
Many issues are misdiagnosed or over-treated, particularly where inspections are linked to remedial work. An independent assessment allows the problem to be clearly understood before any decisions are made.
All surveys are carried out personally, with clear explanation and practical advice on what needs to be addressed — and what doesn’t.
Survey report mentioned damp? Get independent clarification before repairs or renegotiation
RICS Level 2 and Level 3 surveys often highlight possible damp or elevated moisture readings and recommend further investigation.
Many follow-up inspections offered by damp companies are linked to remedial work.
An independent damp and moisture assessment provides clear diagnosis so buyers, sellers and agents can understand the issue before agreeing repairs or renegotiating a purchase.
Why Choose Thomas Damp Surveys
✓ Independent, evidence-based damp diagnosis
✓ No products, treatments or sales agenda
✓ Clear explanation of what is happening and why
✓ Practical advice before any money is spent on repairs
✓ Same-day written reports in most cases
✓ Straightforward, honest service from start to finish
Moisture Diagnosis –
Surveys from £200
What’s included:
• On-site damp and moisture assessment
• Moisture readings and building evaluation
• Identification of the likely cause(s)
• Clear explanation in plain English
• Practical next steps — including what not to do
• Evidence-based written report with photographs
No treatments sold. This is a diagnostic service, not a free quote.
Recent Case Study – Internal Damp Investigation
Recent Case Study – Internal Damp Investigation
The issue
Damp was reported within a stairwell area, with visible disturbance to the wall finish.
Findings
Moisture readings and visual assessment did not follow the pattern associated with rising damp.
The issue appeared localised rather than uniform across the wall base.
Diagnosis
The evidence indicated localised moisture affecting the internal wall finish, not systemic rising damp.
Outcome
The issue was confirmed not to be rising damp.
Correct diagnosis avoided unnecessary damp-proofing work and allowed focus on identifying the true source.
🏗 Garage Roof Inspection – Water Ingress Identified
Observations
Localised staining and timber discolouration were observed at the roof abutment junction.
The pattern of moisture was concentrated at the wall-to-roof interface rather than distributed along the base of walls.
Cause identified
The evidence indicated failure at the roof abutment detail, allowing rainwater ingress during wet conditions.
This form of moisture entry is directional and localised, and not characteristic of rising damp.
Recommended action
Repair or reseal the defective abutment detail to prevent further water penetration.
Addressing the external defect resolves the internal symptom without unnecessary internal treatments.
Accurate external diagnosis avoids invasive and unnecessary damp-proofing work.
Ground levels and damp risk
What I actually assess during a survey
Each inspection focuses on how moisture is behaving within the building — not just surface readings.
This includes factors such as ground levels, ventilation and how moisture may be entering or forming within the property.
The aim is to identify the cause clearly, so any action taken is based on evidence — not assumption.
How the survey process works.
1. Initial check
Send a brief description, photos and your postcode. I’ll confirm whether the property is suitable for inspection.
2. On-site diagnostic visit
Assessment of moisture, ventilation, thermal behaviour and visible building factors to establish what is happening within the property.
3. Clear explanation
A straightforward explanation of the cause(s) and their significance, without any sales element.
4. Next steps
If work is required, I will explain what to address and what to avoid before any money is spent.
If a situation requires a formal lender-grade or specialist survey, this will be made clear at the outset.
Cavity Borescope Inspection
A cavity borescope inspection allows the internal wall cavity to be viewed using a small specialist camera, helping to identify issues that cannot be seen from the surface.
It is useful where damp, cold spots or insulation problems are suspected.
Typical findings may include:
Cavity bridging from debris or mortar droppings
Wet or saturated insulation within the cavity
Missing or uneven cavity insulation
Cold bridging contributing to condensation
This type of inspection provides evidence when assessing the cause of damp or moisture issues affecting external walls.
A short discussion can determine whether a cavity inspection is appropriate before booking.
Loft Insulation
Loft insulation is often insufficient, poorly laid or disturbed over time. During damp and moisture surveys, it is common to find insulation that is uneven, compressed or missing in parts of the loft.
Poor insulation can lead to heat loss, colder rooms and increased condensation, particularly during the winter months.
It can also restrict roof ventilation if pushed tightly into the eaves, allowing moisture to build up within the loft space.
What I look for
During a damp and moisture survey, I check:
The depth and condition of insulation
Whether it is evenly distributed
Signs of condensation or moisture within the loft
Whether ventilation at the eaves is restricted
The aim is to establish whether insulation or ventilation may be contributing to damp or condensation issues within the property.
A short discussion can confirm whether an inspection is appropriate before booking.
Contact us
Telephone: 07767 579153
E-mail: info@thomasdamp.com
Address: Stourport-on-Severn, Worcestershire
Covering the Three Counties region with scheduled work in Pembrokeshire.