Will you confirm the cause on the day?

Often a likely cause can be identified during the inspection. Where the evidence is inconclusive, the report will say so and set out what further investigation would establish.

Do I need a damp-proof course?

Not necessarily. A damp-proof course is only appropriate where rising damp is genuinely confirmed as the cause.

Do you provide a written report?

Yes. A written report with photographs and recommendations is issued through your customer portal.

What is the difference between a damp investigation and a damp survey?

In practice they are the same visit: an inspection whose purpose is to establish why a building is wet. We use "investigation" because that is what the work is — readings, construction, defects and conditions weighed together, not a look at a stain.

Will you find a concealed leak?

Often, yes — thermal imaging, moisture distribution and the pattern of the damage usually point to it. But an inspection without opening up cannot prove what is behind a wall or under a floor, so where the evidence points to a concealed defect we say what further investigation is needed rather than claiming certainty.

Do you need access to the outside of the property?

Yes. Most damp we investigate has an external cause or contributor, so the elevations, rainwater goods, ground levels and openings need to be seen. Please let us know in advance if access to any elevation is restricted.

Damp

Damp investigations and moisture diagnosis

A structured investigation to establish the likely cause of dampness before any remedial work is recommended.

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Watch — how a damp investigation is carried out

What our surveyor does at your property

Moisture readings across the affected wall, thermal imaging to show where the fabric is cold or wet, an external inspection of the brickwork, ground levels and rainwater goods, and then the findings explained to you in plain terms. Only then is any work recommended.

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A Procure Group damp surveyor taking a moisture reading from a wall with a hand-held meter — How a Procure Group damp survey works — A damp surveyor at work: moisture readings, thermal imaging and the checks outside, then a plain explanation of what is causing the damp before any work is recommended.

Symptoms and causes are not the same thing

The stain on the wall is the symptom, not the diagnosis

A damp patch tells you where moisture is reaching a surface. It does not tell you where that moisture came from, and the same patch can be produced by half a dozen different mechanisms with completely different remedies.

An investigation exists to close that gap. We are looking for the mechanism that explains all of the evidence — the readings, the distribution, the construction, the defects outside, the conditions inside and what the weather has been doing — rather than the first explanation that fits part of it.

What we weigh before offering a diagnosis:

Where the moisture sits, and how it is distributed vertically and horizontally

The construction of the wall and the type of floor

The presence, position and condition of any damp-proof course

External ground, path and paving levels

The condition of render, pointing, masonry and openings

Rainwater goods, roof, chimney and flashing details

Air temperature, relative humidity and dew point in the affected rooms

Surface temperatures on the affected construction

Timber moisture content where timber is at risk

Salt contamination in plaster and its effect on readings

Any history of leaks, works or previous treatments

Recent weather, occupancy and heating patterns

This is also why we will sometimes tell you that the evidence is not conclusive. Monitoring over a wet spell, a plumbing pressure test or opening up a small area is often cheaper and more honest than a confident guess.

What the issue is

A damp investigation is a methodical assessment of a property to establish where moisture is coming from. It considers the building fabric, external environment, internal conditions and occupancy patterns rather than relying on a single meter reading.

Common symptoms

Visible damp patches or staining
Peeling or blistering decoration
Perished or hollow-sounding plaster
Musty smells
Black mould growth
Salt deposits on walls

Likely contributing factors

Defective rainwater goods
Raised external ground levels
Bridged or absent damp-proof course
Plumbing leaks
Insufficient ventilation and heating
Failed pointing or render

Conditions that may be mistaken for it

Condensation misread as rising damp
Hygroscopic salt activity
Historic staining from a resolved leak
Construction moisture in newer work

How the issue should be investigated

External inspection of walls, ground levels and rainwater goods
Internal assessment of affected and adjacent rooms
Moisture profiling using appropriate instruments
Temperature and relative humidity readings
Inspection of voids and subfloors where accessible
Review of previous works and finishes

Potential treatment or repair options

Targeted repair of the identified moisture source
Improved ventilation where condensation is a factor
Localised replastering only where the finish has failed
Damp-proof course installation where genuinely justified
Drainage or ground level correction

When treatment may not be appropriate

Where readings are elevated but no moisture source is confirmed
Where a simple building repair will resolve the issue
Where the property is still drying following a resolved leak

Factors affecting the cost

Property size and number of affected areas
Accessibility of voids and external elevations
Whether opening up or sampling is required
Travel within the service area
Depth of reporting required

What to expect during an inspection

A surveyor will inspect the affected areas and the wider building, take readings, photograph findings and discuss what is observed. Allow around 60 to 90 minutes for a typical domestic inspection.

Final recommendations always depend on the property, the inspection findings and the confirmed cause. Elevated readings alone do not confirm rising damp, not every mould problem requires extensive treatment, and damp-affected plaster does not always need replacing.

Below-ground damp protection, to be clear about what we do and do not take on: Procure Group does not undertake full basement or cellar waterproofing installations. Our waterproofing work is limited to appropriate localised applications encountered as part of damp investigation and remediation — the base of a wall where ground sits against it, a floor-to-wall junction, a short below-ground return. Where a property genuinely needs a designed waterproofing system to a whole below-ground room, we will say so and tell you to instruct a specialist in that work rather than take it on ourselves.

What the instruments do

What our instruments can and cannot establish

Electrical moisture meters are useful and we use them constantly, but they measure electrical conductivity, not water. Salts, foil-backed plasterboard, metal fixings and even some paints can all produce a high reading in a dry wall.

That is why an electrical meter reading, on its own, is not evidence of rising damp. It is one input. Where the diagnosis depends on it, we take it further — carbide testing of drilled samples, a salts analysis, a hygrometer survey of the room or thermal imaging to show the pattern behind the plaster.

Electrical resistance and capacitance meters for profiling and comparison
Calibrated hygrometers for air temperature, relative humidity and dew point
Surface temperature measurement to establish condensation risk
Thermal imaging where a pattern needs to be seen rather than inferred
Carbide or gravimetric sampling where an absolute moisture content is needed
Salts analysis where hygroscopic contamination is suspected

No reading is quoted in your report without the context that makes it meaningful — what was measured, where, and what it does and does not show.

Related work

Where an investigation usually leads

Rising damp assessments

Capillary moisture, damp-proof courses, bridging and salt contamination assessed on the evidence rather than a meter reading.

Penetrating damp investigations

Rainwater and external defects traced to the elevation, opening or rainwater fitting responsible.

Condensation control

Humidity, dew point and surface temperatures measured before any equipment or insulation is recommended.

Mould remediation

Safe removal of the contamination, and control of the moisture conditions that allowed it to grow.

Timber preservation

Decay and insect activity assessed against the moisture conditions that made the timber vulnerable.

Damp surveys and moisture investigations

What a professional damp investigation covers, what the instruments can and cannot establish, and what your written report contains.

Where we work

Damp investigation across Bedfordshire, Northamptonshire and Cambridgeshire

Damp investigation is carried out across our operating area. Choose your county or town to see the work we do locally, the postcode districts we cover and how to arrange an inspection.

Bedfordshire Bedford Northamptonshire Northampton Cambridgeshire Cambridge Hertfordshire Milton Keynes Peterborough

Frequently asked questions

Next step

Not sure which inspection you need? Start with a few questions.

Tell us what you are seeing and we will set out what is likely, what is uncertain and which inspection would answer the question. Speak to us on 0333 335 6152 if you would rather talk it through.

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