Mould and Condensation Survey - Book Yours Now!

Are you in need of a comprehensive Mould and Condensation Survey? We are London’s leading surveyors in diagnosing and treating damp-related issues. We provide thorough inspections and tailored solutions to protect your property from the damaging effects of moisture. 

Contact us at 0300 373 7251 for a London damp survey. 


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Expert Mould and Condensation Survey Guidance You Can Trust

What causes Condensation?

Everyone is familiar with the tiny droplets of water that form on windows and walls when the air is humid. When warm air hits these colder surfaces the moisture laden air changes from vapour back to water droplets, which gradually join together making larger droplets, which can stream into puddles creating damp problems. Maintaining the surface temperature of walls above the dew point through insulation and ventilation systems can help prevent condensation problems.

This requirement for humid air to form condensation often means spaces such as kitchens, bathrooms and laundry rooms are obvious culprits.

As well as being unsightly chronic condensation is often evident as:

  1. Water droplets on windows or walls

  2. Window frames showing mould or decay

  3. Damp walls causing peeling wallpaper

  4. Mouldy and musty smells throughout the property

  5. Black mould spreading on walls, curtains, carpets, and bathroom tiles

  6. Water droplets on felt and timber in the loft, which may cause rot

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Understanding Condensation Issues

Dry and Wet Rot in Timbers – Continual damp on timbers local to a bathroom or kitchen can rapidly fall victim to dry or wet rot. Dry rot needs less moisture to activate but both forms of rot thrive where the moisture content is raised. Fungal growth digests the timbers, reducing its structural strength.

Lofts are Prone to Condensation Problems – The temperature gradient between a loft and the heated accommodation downstairs can often be enough to condense the warm air rising from downstairs once it arrives in the loft. Lofts are rarely heated so as warm air rises up through the house the drop in temperature in the loft can be enough for moisture to condense on roof timbers and insulation felt. Over time this moisture can cause serious wood rot issues, which may spread as the outbreak can go undetected for for some time.

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The Importance of a Specialist Condensation Survey

Why indoor air quality matters

At first glance problems with condensation in a household might appear minor and easy to fix yourself. However, when you start to understand the complexity of where the moisture is coming from and why it is remaining in rooms then the solutions aren’t quite so straight forward. When the quality of the indoor air is crucial to maintaining wellbeing it makes sense to invest in the skills of professional condensation surveyors.

Poor quality indoor air due to condensation can pose significant health risks, including respiratory infections, allergies, asthma, and effects on the immune system, particularly for vulnerable individuals.

Industry leading damp survey and condensation survey experts, such as at Advanced Damp, use a range of specialist tools and equipment, so they can properly evaluate the problem before putting together the best solution.

Overall, a condensation survey will inspect the interior of the premises, including a timber survey, checking for a range of issues relating to condensation, damp, and structural issues with timber.

The air humidity, temperature and dew point all help to build a picture of where moisture is located and the likelihood of it condensing. The dew point is a function of air temperature and relative humidity and indicates at what temperature condensation will form on any given surface.

A moisture meter can measure the water content of several mediums including wood, plaster, paper and concrete. It calculates the electrical resistance, which is related to the moisture content.

Thermal imaging cameras are also invaluable when employed to identify cold spots in a room, which might be particularly prone to condensation. They can help to understand why condensation forms in certain places by identifying cold surfaces.

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Condensation Survey
mould around the windows from condensation.

What Happens in a Condensation Survey?

A free condensation survey normally takes a holistic approach where all useful information on the building is collated so that an informed decision can be formulated. Surveyors conducting these surveys are often accredited by the Property Care Association, demonstrating their expertise in dealing with damp and mould problems in properties. The different aspects of a free condensation survey include:

  1. A thorough inspection of the building interior, exterior and surroundings is undertaken

  2. Questioning the occupants for any history of flooding or water penetration

  3. Measuring interior humidity, temperature, dampness in walls etc

  4. Setting up monitors to provide live data

All the information from the survey is collated into a report, which assesses the current state of play and a list of the best solutions, including ventilation systems, and a costing.

What Causes Mould Growth?

1. Black mould growth – there are several species of black mould growth that thrive in the UK climate. They include Aspergillus Niger, which is the same as the black furry mould found on fruits and vegetables. Alternaria and Cladosporium are two umbrella names that include hundreds of other slightly different strains of black mould growth.

As part of their life cycle any black mould will release thousands of microscopic spores which easily float in the air dispersing throughout the household. When inhaled they can trigger an allergic reaction and cause irritation.

In particular, the elderly, babies and those with weakened immune systems can be seriously affected. Cold like symptoms are frequently the result of exposure to black mould including a sore throat, itchy eyes, a runny nose and sneezing.

2. Stachybotrys Mould – When high moisture air remains in an unventilated room it can gradually work its behind the wallpaper, ceramic tiles and even the plaster. This is a particularly dangerous mould as it excretes a mycotoxin, which is contained in the spores the fungi releases and is capable of disrupting protein synthesis.

In well developed cases the mould will separate the paper from the wall, swell plaster and force tiles away from their cement.

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What Happens with a Mould survey?

A mould inspection survey will pinpoint the cause of excessive moisture in the building. If there is insufficient ventilation, which can exacerbate mould growth, this is highlighted.

A mould inspection survey should address the following points. It should:

1. Evaluate the indoor air quality

2. Highlight the presence of mould

3. Evaluate the causes of the mould

4. Advise occupants how to treat mould and prevent it’s return

5. Indicate any lifestyle changes required eg. dehumidifiers, extractor fans

6. Offer a written report and costing for the mould removal and prevention

Damp reduces the overall energy efficiency of any dwelling. So, as well as being a more uncomfortable living environment a damp home is harder to heat and more costly. Over time, damp and mould can cause serious structural damage to buildings over time especially in the loft, if not identified early.

Types of Surveys

Condensation surveys vs. mould surveys: what’s the difference?

Ensuring a healthy and safe living environment in a home shouldn’t be a privilege. However, many households fall prey to condensation and mould issues, which can seriously impact their health. By their nature their is some overlap between a mould and a condensation survey because excess moisture is at the heart of each.

Depending on the extent of the problem the solutions for condensation problems can often be more straightforward, such as improving ventilation systems during baths or during cooking in the kitchen.

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mould removal kit

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Benefits of a Professional Survey

How a professional mould or condensation survey can help

Initially, the symptoms of condensation and mould problems might appear trivial in any household, however, the skills required to repair the damage they have both done and to prevent them from returning shouldn’t be underestimated. A DIY damp proofing repair would likely to be piecemeal as the full implications of the problems could easily be overlooked. A professional condensation survey conducted by skilled technicians will be much more likely to reduce condensation and prevent mould growth.

Maintaining the value of your property when it comes to resale is an important consideration for any householder. So attending to any condensation or mould issues has to be seen as an investment for the future.

Choosing the Right Surveyor

Why choose a professional for your mould or condensation survey?

Condensation specialists, Advanced Damp Ltd, offer tailored solutions to effectively combat condensation issues. The approach we use focuses on long-term safety and comfort by delivering comprehensive treatments rather than temporary fixes.

Advanced Damp mould specialists have 30+ years of experience with mould treatment, aiming to address root causes for lasting solutions. We use advanced technology to offer mould remediation services for both residential and commercial clients in the South of England.

“Highly professional damp treatment…”


“Advanced Damp were highly professional in the damp treatment service they provided us. We found the team very clear to explain the treatment, steps for follow-up, and advice on another possible area of damp in the house all very helpful. They were on time, and committed to tidying up as part of the service.

We really appreciated the immediate response to the request we placed on the website, and the fact that they could fit us in so quickly. We wouldn’t hesitate to recommend these services.”

~ Bruce

“Practical, helpful approach…”


“Super-prompt, efficient, courteous and tidy service from Advanced Damp. I had lots of concerns about getting the damp treatment to fit in with some improvement work we had planned and some unplanned insurance work, and their practical, helpful approach and detailed advice has taken a huge weight off my mind.

They really tailored what they did to what we needed, and will be doing some more work for us to fit in with the schedule we have to work to. I’d have no hesitation in recommending them.”

~ Jane

“Sorted quickly and efficiently…”


“My rising damp problem was sorted quickly and efficiently by Advanced Damp.

The team were excellent at their job and explained to me what they were doing and why, every step of the way. I felt confident that they were experienced in the problem. I will definitely use them again.”

~ Christine

Book a Mould & Condensation Survey Today!

Safeguard your property’s health with our award-winning team of leading damp surveyors and damp proofing specialists. We are Londons #1 provider of comprehensive condensation surveys. Our damp surveys for commercial and residential properties identify and provide detailed insight into all damp-related concerns. Protect your property and peace of mind; book your London damp survey with our specialists today.

At Advanced Damp, we also offer comprehensive thermal imaging surveys to provide a deeper, non-invasive analysis of damp issues. Our advanced thermal imaging technology allows us to detect hidden moisture, heat loss, and insulation defects that are not visible to the naked eye. This service ensures a thorough understanding of your property’s condition, leading to more accurate diagnosis and effective treatment plans. 

Learn more now: Should I Get a Damp Survey

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Jake Fitzgerald - Damp Surveyor

Surveyor of Timber & Dampness in Buildings (CSTDB) & ( MRICS ) Chartered Quantity Surveyor

Jake is a qualified chartered quantity surveyor and experienced damp specialist with a unique skill set in thermal imaging. With a focus on effective solutions, Jake combines his expertise in quantity surveying and thermal imaging to accurately assess and address damp-related issues. He utilises advanced technology to identify hidden moisture sources and develop targeted strategies, ensuring comprehensive and cost-effective solutions for his clients. With a commitment to open communication and client satisfaction, Jake delivers cutting-edge solutions that tackle damp challenges head-on.

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