town in Hertfordshire · HP1, HP2, HP3

Damp and Mould Specialists Serving Hemel Hempstead

Procure Group Ltd investigates damp, mould and condensation across Hemel Hempstead, from the Old Town and the new town neighbourhoods to Adeyfield, Bennetts End, Warners End and the surrounding villages.

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What we investigate

Damp and mould concerns we investigate in Hemel Hempstead

Any one of these symptoms can have several different causes, and the right remedy depends entirely on which one it is. That is what a survey establishes.

Damp patches and tide marks

Staining at low level or around a specific point on a wall or ceiling.

Mould growth

Black, green or grey growth on walls, ceilings, sealant, window reveals or behind furniture.

Musty odours

A persistent smell, often in a cupboard, cellar or unused room, sometimes before anything is visible.

Peeling paint and damaged plaster

Blistering, salting, crumbling plaster or wallpaper lifting away from the wall.

Condensation on windows

Water on glass and frames in the morning, and mould appearing on cold surfaces.

Water penetration

Damp appearing during or after rain, frequently linked to rainwater goods or pointing.

Suspected rising damp

Low-level dampness that may be rising damp, or may be one of several other causes.

Timber decay and woodworm

Soft or crumbling timber, fungal growth, exit holes or springy floors.

Leaks and escapes of water

Plumbing, heating or drainage leaks that show up some distance from the source.

Restricted air movement and cold surfaces

Rooms that feel humid, cold spots at reveals and lintels, and extract fans that do not clear steam.

Basement and cellar moisture

Damp, standing water or high humidity in below-ground space.

We do not diagnose rising damp from photographs or from a single meter reading, and we do not assume that every damp problem needs chemical damp proofing. A great many do not.

Services

Damp, mould, timber and waterproofing services in Hemel Hempstead

Each service below links to the full national service page, where the investigation, the treatment options and the circumstances in which it is not appropriate are set out in detail.

Damp

Damp investigations

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

Damp

Rising damp assessments

Careful assessment of low-level dampness, which is frequently caused by something other than rising damp.

Damp

Penetrating damp investigations

Investigation of moisture entering through walls, roofs, openings and rainwater goods.

Surveys

Specialist damp surveys

Detailed, evidence-led survey reports for owners, landlords, agents and purchasers.

Surveys

Pre-purchase damp assessments

Focused assessment of damp and timber concerns raised during a property purchase.

Mould & condensation

Condensation control

Assessment of moisture production, ventilation, heating and insulation to reduce surface condensation.

Mould & condensation

Mould remediation

Safe removal of mould growth combined with addressing the moisture source so that it does not return.

Timber

Timber preservation

Assessment and treatment of structural timbers affected by moisture, decay or insect attack.

Timber

Woodworm investigations and treatment

Establishing whether insect activity is current before recommending any treatment.

Timber

Wet rot investigation and repairs

Identifying and repairing timber decay caused by sustained high moisture content.

Timber

Dry rot investigations

Careful investigation of suspected dry rot, which can extend beyond visibly damp timber.

Waterproofing

Basement waterproofing

Design and installation of waterproofing systems for basements and cellars.

Waterproofing

Structural waterproofing

Waterproofing design for below-ground and earth-retaining structures.

Waterproofing

Cementitious tanking

Applied cementitious waterproofing for suitable below-ground and internal applications.

Waterproofing

Cavity drainage membrane systems

Drained protection systems that manage water rather than resisting it under pressure.

Repairs & finishes

Damp-resistant plastering

Replastering specifications appropriate to walls affected by dampness or salt contamination.

Repairs & finishes

External damp-related repairs

Repairs to the external fabric that address the source of moisture entry.

Repairs & finishes

Water-damage reinstatement

Drying, repair and reinstatement following leaks, escapes of water or flooding.

Repairs & finishes

Internal wall insulation

Insulation of solid walls with careful attention to moisture risk and detailing.

Local property context

Property and moisture in Hemel Hempstead

Different construction types behave differently when they get wet, so the approach is matched to the building in front of us.

Hemel Hempstead expanded substantially as a designated new town from the late 1940s, and much of its housing dates from that period. As with other new towns, the original airflow strategy relied on incidental air movement that later draught-proofing and glazing upgrades have largely removed, which is why condensation and mould are frequent findings in this stock.

The Old Town and the surrounding Chilterns villages contain older solid-wall and timber-framed buildings, some listed. Here the questions are about maintenance history, external ground levels, past treatments and the suitability of finishes applied over the years.

The town's topography matters too. Housing built across the valley sides means retaining walls, split levels and rooms partly below external ground level are reasonably common, and those situations need a waterproofing assessment rather than a surface treatment. We look at the whole arrangement — levels, drainage, and how the space is used — before recommending anything.

Our approach

What happens during your survey in Hemel Hempstead

The purpose of a survey is to identify the underlying cause of the moisture, not to justify a particular treatment.

  1. 1Your enquiryYou tell us what you are seeing, where and when. Photographs help.
  2. 2Understanding the symptomsWe ask about the pattern — after rain, in cold weather, worse in one room.
  3. 3Reviewing what you already haveExisting reports, homebuyer surveys or previous quotations are read before the visit.
  4. 4Choosing the right surveyThe survey type is matched to the problem rather than sold as a package.
  5. 5Inspecting the propertyInternal and external inspection, moisture and psychrometric readings, photographs.
  6. 6Considering moisture sourcesConstruction, ground levels, rainwater goods, airflow, heating and occupancy.
  7. 7Clear written findingsWhat was found, what it means, and where the evidence is inconclusive.
  8. 8Recommended next stepsIn priority order, with the reasoning behind each recommendation.
  9. 9Quoting only where work is neededItemised, with assumptions and exclusions stated.
  10. 10Portal access throughoutReports, quotations, project stages and documents in one place.
  11. 11Aftercare and guidanceDrying and decoration advice, maintenance instructions and guarantee details.

Transparent pricing

Damp survey from £114 + VAT

A Damp Proofing Quote Assessment is £114 plus VAT. The fee can be deducted from the final invoice if eligible remedial works proceed, subject to the agreed terms. Other inspection types are priced according to their scope.

Inspection requirements vary between properties, so larger, more complex or commercial buildings are priced according to their scope. You will be told the fee before the visit is confirmed — there are no charges added afterwards.

Online tools

Three ways to get a considered answer before anyone visits

Not Sure What Is Causing the Damp?

Answer a few simple questions, upload photographs and receive an initial summary of possible causes and the type of survey that may be appropriate.

  • The tool gives preliminary guidance only
  • It does not replace an inspection
  • Photographs alone cannot confirm a diagnosis
  • You provide contact details so the summary can be emailed to you
Check your damp using AI

Already Have a Damp or Property Survey Report?

Upload an existing damp report, homebuyer report, RICS report or property inspection document for an initial AI-assisted summary and recommended next steps.

  • The tool summarises the document you submit
  • Recommendations are subject to professional review
  • You provide contact details to receive the summary
  • A site inspection may still be necessary
Upload an existing report

Request a Written Estimate

Send us the details and photographs of the problem and our team will price the work and put it in writing.

  • Prepared by our team, never generated automatically
  • Photographs help us price it accurately
  • Final prices depend on the inspection findings
  • No obligation to proceed
Request a written estimate

Regional project example

A project from elsewhere in our region

We do not have a published project in Hemel Hempstead yet, so this example is from elsewhere in the area we cover. We will not present work as local when it is not.

Art gallery · St Albans

ISO-Therm internal wall insulation to an art gallery

Agreed approach
ISO-Therm internal wall insulation installed throughout the gallery, fitted from scaffold and finished ready for decoration.

Verified customer reviews

What customers in the wider area say

These reviews are from customers elsewhere in the region rather than this town. We publish them as they were given.

Gary Balmforth · · Remedial works · 2026-08-27
Jessica Zarins · · · 2026-08-13

Questions

Frequently asked questions — Hemel Hempstead

Can condensation damage the building itself?

Persistent condensation can decay timber, corrode fixings, spoil plaster and decoration, and damage insulation. It is worth resolving properly rather than repeatedly cleaning and redecorating.

Do you offer positive input airflow?

Yes, where the property suits it. PIV works well for whole-house humidity problems in houses with an appropriate loft, but it is not the right answer for every property and it will not fix a leak or a building defect.

How soon can you provide the report?

The written report with photographs and recommendations is issued through your customer portal, and you will be told at the inspection when to expect it.

What types of property in Hemel Hempstead are most susceptible to rising damp?

Hemel Hempstead has a varied housing stock ranging from pre-war terraces in the older parts of HP1 to the postwar new town development across HP2 and HP3. Older properties built before the widespread use of damp-proof courses are naturally more vulnerable to rising damp, though failed or bridged damp-proof courses can affect properties of any era. A physical inspection is necessary to confirm whether rising damp is genuinely present rather than another moisture source.

How do you distinguish between penetrating damp and condensation during an inspection in HP3?

Our surveyors use a combination of moisture meters, thermal imaging and visual assessment to identify moisture patterns within the structure. Penetrating damp typically presents at localised points corresponding to external defects such as failed pointing, cracked render or blocked guttering, whereas condensation tends to follow cold bridge patterns near windows and external corners. Correctly identifying the source determines the appropriate remedial approach, which is why a thorough inspection rather than a visual check alone is essential before any work is recommended.

Nearby

Also serving locations near Hemel Hempstead

We also work in St Albans, Berkhamsted, Tring and Watford. For everywhere else we cover, see our Hertfordshire service area.

Next step

Book your damp survey in Hemel Hempstead

Book an inspection, ask for a callback, or use one of the online tools first. Whichever suits you — there is no obligation either way.

Request a callback

Tell us what you are seeing and we will come back to you. Your enquiry is tagged to Hemel Hempstead so the right surveyor picks it up.