Damp Checklist for Homebuyers: Key Factors to Consider Before Purchase
If you are currently looking for a buyer for your home and you are looking for a larger property, it is an exciting time. Buying property is no small investment and you need to do due diligence to ensure the structure is sound and there are no underlying issues.
In the UK, we have a wet climate and that means damp and moisture can be a real threat; in this short article, we offer a homebuyers checklist for damp, mould & mildew.
- Roof inspection – The roof is a critical component that keeps the harsh weather out of the home and should a leak develop, this will lead to internal damage; joist and rafters will start to degrade, depending on the severity of the leak. The roofing contractor issues you a detailed written report on the status of your roof, plus they can quote for any remedial work that might be required.
- Check for peeling wallpaper and paint bubbles – If damp gets into the plaster, this will cause wallpaper to peel and lift from the substrate, paint will also be affected, usually bubbles appear in emulsion paint. We offer wet wall repair and a wide range of other damp repair services, if you are wondering where to find a ‘woodworm treatment company near me’, you are in luck, as we cover London and surrounding areas.
- Check exterior walls – Inspect the brickwork/rendering on the exterior walls, looking for signs of moisture damage; crumbling mortar and moss growing on stone and brickwork are tell-tale signs of either rising or penetrating damp. Examine the ground line, where the brickwork meets the soil and watch for signs of moss and mould growth.
- Condensation inspection – If condensation is present, this means high moisture content in the air and the best solution is to call in a condensation specialist, someone with the know-how and equipment to accurately measure the moisture and identify the source. When you take a hot bath/shower, keep the door closed and open the windows until the moisture has left the room. Open a few windows in the house on a daily basis to generate an airflow to reduce condensation.
Homebuyer survey
At London Damp Specialists, we offer a damp survey that is designed for those wishing to buy a property, there are 3 levels, depending on your needs, plus an additional plaster lab analysis test that involves the testing of plaster samples from various parts of the property.
Making a large investment demands that you carry out a damp survey that is both accurate and comprehensive. Call us on 020 8528 3864 or fill in the online form and set the wheels in motion; receive a detailed survey report, usually within 24 hours of the survey being completed.
Damp is not something you can afford to overlook, repairs can cost thousands of pounds and if you are not vigilant, signs can go unnoticed. Damaged timber can easily be concealed with a few coats of paint; the only way to be sure that a property is damp-free is to have a homebuyer damp survey done.
Damp Survey Costs
Transparent pricing with no hidden fees for our independent, unbiased surveys.
Level 1
What’s included:
- Inspection of walls
- Inspection of floors
- Inspection of ceilings
- Leak inspection of drains and plumbing
- Damp information and prevention guide
Level 2
What’s included:
- Everything in Level 1
- Dry rot inspection
- Wet rot inspection
- Woodworm inspection
- Damp information and prevention guide
Level 3 (Most Popular)
What’s included:
- Everything in Level 1 & Level 2
- Thermal Imaging
- Air humidity testing
- HD boroscope camera
- Brickwork pointing inspection
- DPC inspection
- Ventilation flow test on extractor fans
- 4K drone imagery roof, chimney stack
and guttering inspection - Structural condition inspection
- Damp information and prevention guide
Survey Add Ons
Add On 1
Laboratory analysis Of plaster identifies hygroscopic salts such as chlorides and nitrates. which indicate whether damp is caused by rising groundwater or by plumbing leaks, This testing removes guesswork, allowing the exact source of moisture to be identified so the correct treatment is applied rather than carrying out unnecessary damp-proofing work.
Add On 2
qPCR DNA mould testing detects microscopic mould spores that are invisible during a normal inspection and van remain hidden behind walls, floors. or inside building rkaterials. It identifies the exact mould species present and the contamination level, allowing hidden mould problems to be confirrned and properly treated before they affect the property or occupants’ health.
Qualifications: All our surveyors are PCA and CSRT qualified for remedial treatments and also CSSW qualified for structural waterproofing.
Next day report: You will receive the report within 24 hours of the inspection taking place.
The survey fee will be deducted from the cost of any recommended repairs.
These are the tools we use
A damp meter
A damp meter is a diagnostic tool used to detect and measure moisture levels within building materials such as plaster, brick, timber, and concrete.
Borescope camera
borescope camera is a small inspection camera attached to a flexible semi-rigid cable that allows you to see inside areas that are otherwise inaccessible.
Inspection Drone
A drone is a remotely operated aerial device equipped with a camera that allows visual inspection from above without the need for scaffolding or ladder.
Air Humidity Sensor
Air humidity sensor measures the amount of moisture present in the air, expressed as relative humidity (RH) in percentage. It helps determine whether indoor conditions are contributing to condensation, mould growth, or damp-related issues.
Thermal Imaging Camera
A thermal imaging camera detects temperature differences on surfaces by using infrared technology to produce a heat map image. In damp investigations, it helps identify cold spots, moisture intrusion, insulation defects, thermal bridging and leaks.
Air Flow Ventilation Detector
An air flow ventilation detector measures the movement and volume of air passing through vents, extractor fans, and air bricks. It confirms whether ventilation systems are working properly and achieving adequate air changes within a room. Poor airflow leads to trapped moisture, high humidity, condensation on cold surfaces, and ultimately mould growth.
Mould Swab Test Kit
A mould swab test is carried out to confirm the presence of hidden mould growth and identify the specific species involved. Surface mould is not always visible, especially behind furniture, inside cavities, or within ventilation systems. Laboratory analysis of a swab sample determines whether active mould spores are present and what type they are, which helps assess potential health risks and decide the correct remediation approach rather than relying on visual assumption alone.
Plaster Salt Analysis Lab
Laboratory analysis of plaster is used to identify the type of salts present within the material, typically chlorides and nitrates. The presence and concentration of these salts help determine whether the moisture source is consistent with rising damp, ground contamination, or another forms [sic] of water ingress. such as mains water leak, This removes guesswork and prevents misdiagnosis, ensuring the correct remedial treatment is specified rather than applying unnecessary or ineffective solutions.
