Independent Damp Surveyors
Discovering damp in your home is one of the most frustrating experiences that you can have as a homeowner, and it always seems to happen at the least convenient times.
Not only can damp that is left untreated result in the need for highly expensive repairs, but it can also cause damage to treasured personal possessions or furniture. If you have found damp on your property, you will know how concerning it can be. After all, your home is supposed to be where you relax, not an extra source of stress!
Covering London
We cover all areas inside the M25.
Money Back Guarantee
We’ll find the cause of your damp or your money back.
Easy to Book
Call now to get booked in over the phone or book online.
Fast & Efficient
Surveys done in 48 hours and report sent to you within 24 hours.
Experienced & qualified
Over 40 years’ experience treating damp.
Thankfully, you don’t need to panic when discovering damp—Independent Damp Surveyor are here to help you. Our team of highly qualified experts will find the source and the cause of the damp on your property, or your money back. All of our surveys are carried out within 48 hours by CSRT, CSSW, and CSCS certified surveyors, and a report of our findings will be sent to you that same day.
Not only are our surveys carried out quickly, but they are also extremely thorough—our surveyors work to develop a complete understanding of materials and construction in the area of concern. Our assessments are carried out via detailed moisture mapping and thermal imaging surveys, and the results and possible solutions explained in full reports.
We cover all areas inside the M25, and offer damp inspections for just £199 + VAT, damp and timber inspections for just £299 + VAT and damp, timber and thermal imaging surveys for just £399 + VAT.
Call now on 020 7523 5882 to book a survey from a qualified damp expert, or book a damp survey online using our contact form.
What kinds of damp can Independent Damp Surveyor deal with?
Damp is not all the same—there are actually several different types of damp that commonly affect property owners. Not every type of damp has the same cause and requires the same solution. Our surveys will establish the exact type of damp so that we can offer recommendations that get to the root of the problem and eliminate it for good. So, what are the different types of damp that we typically encounter?
Rising Damp
Rising damp is often talked about, yet is actually one of the rarest forms of damp to come across. One of the reasons that rising damp is so widely discussed is that underqualified tradespeople often misdiagnose other forms of damp as rising damp. Incorrect damp information not only leads to many people believing it to be a much more common problem than it actually is, but it also results in the incorrect treatment being applied and the issue not being resolved. This is why it is essential to use a qualified and experienced damp specialist.
Another issue is that some unreputable tradespeople will deliberately misdiagnose any and all low-level damp as rising damp in order to sell more expensive “solutions”! As a trusted and certified independent damp surveyor, we carry out extensive external and internal surveys in order to correctly diagnose any low-level damp.
True rising damp is found in the walls of buildings and is caused by moisture from the ground (such as rainfall) being absorbed up through the base of walls. This moisture then travels upwards via capillary action through tiny holes in the bricks.
In the case of most properties, a barrier known as a DPC (or damp proof course) is put in place during construction in order to prevent rising damp. DPCs are made of waterproof, non-absorbent materials—traditionally slate, but plastic damp proofing is more common in newer builds.
Rising damp is much more likely in older builds where the damp proof course has deteriorated or was never installed at all! Some mistakes during construction can also reduce the efficacy of DPCs, such as debris or insufficient insulation materials in wall cavities, or renders overlapping DPCs. These errors enable moisture from the ground to move above the DPC and rise through the wall.
While rising damp is much rarer than often believed, it can cause serious problems if untreated. Not only can it cause decorative damages, but can also weaken the physical structure of your home and reduce the efficiency of insulation. Not to mention, the smell is often unpleasant and it can be harmful to respiratory health.
As well as a musty smell, signs of rising damp include wet patches on walls, flaking or “bubbling” plaster, crumbling bricks or mortar, and rotting skirting boards.
Penetrating Damp
Penetrating damp is one of the forms of damp often misdiagnosed as rising damp when it is discovered at a low level. However, penetrating damp is an entirely different form of damp. Instead of moisture travelling upwards, this type of damp sees it travel horizontally or even downwards.
There are a few different causes of penetrating damp. One is rainwater reaching the external surface of a wall due to wind, and then moving into the building internally via tiny holes in the brickwork. Once it reaches the internal surface of the wall, it is kept in place by warmth rather than evaporating. Chimney stacks or leaking roofs are other common routes of entry for penetrating damp. If untreated, penetrating damp can cause serious issues such as wet or dry rot, or water or frost damage internally and externally.
This form of damp is usually found in buildings with non-breathable renders, such as those made of cement-based materials. Most houses built during or after the 1980s use cavity wall designs to reduce the chances of penetrating damp affecting the property.
Another common cause of penetrating damp is floor levels (internal or external) being elevated above a DPC. This often leads to penetrating damp being misdiagnosed as rising damp.
There are a few signs of penetrating damp to look out for, such as damp stains on ceilings or external walls, wet or crumbling plaster, black mould spores, and drips.
Because penetrating damp can have so many different causes, it is vital to determine the exact cause in order to correctly treat the problem. The wrong diagnosis from a damp survey can result in you paying unnecessarily high prices for treatments that won’t fix the issue. Our surveyors are aware of all potential causes of this damp, and carry out thorough inspections in order to find the right diagnosis.
Condensation
Condensation is one of the most recognisable forms of damp. While condensation is usually most noticeable as droplets of water on windows, it can also appear on other surfaces where it is typically easier to miss. Condensation-related damp is often misdiagnosed as other forms of damp, and expensive treatments recommended unnecessarily.
The most common cause of condensation is our own behaviour. Condensation comes from airborne moisture generated within, rather than outside of, the home. This moisture is usually steam from showers, baths, cooking, or other everyday household occurrences. This doesn’t mean you should stop using hot water, of course—but it is important to tackle condensation before it spreads and potentially causes structural damage to your property.
Moisture becoming trapped inside and condensing is often due to an increase in levels of insulation and the blocking of draughts. Although insulation is great for keeping our heating bills low, there is a balance to be struck here.
Some ventilation is important—for example, opening windows for even a few short minutes a day can prevent too much condensation from forming. Wiping condensation from windows using a piece of kitchen roll or a towel can also help.
If condensation is not dealt with and is allowed to spread, it can lead to mould growing on surfaces. Not only can mould cause unsightly stains (in some cases permanent) and affect our health, but it can also penetrate walls and damage the integrity of structures in the same way that other forms of damp can. This extremely common and seemingly minor problem can actually have severe consequences over time if not addressed.
Condensation is usually not difficult to detect—water droplets on windows and mould on or around window frames are usually the first signs. Dealing with condensation usually only requires simple life changes that you can carry out yourself, but condensation being misdiagnosed as other forms of damp can result in costly “treatments”. Independent Damp Surveyor can carry out a detailed damp inspection to determine if your damp problem is just condensation or something more structural.
Timber Rot
In buildings with frames, walls, or floors made of timber, damp can have another troublesome effect—timber rot. Timber rot is caused by species of fungi that live inside wood. These fungi can be separated into two categories; wet rot fungi and dry rot fungi.
Wet rot fungi only grow in wood with a high moisture content (around 50%), so damp typically has to be severe and long-lasting to cause wet rot. Dry rot, on the other hand, is a result of a single specific fungus that can grow in wood with much lower moisture content. The dry rot fungus is made up of spores that are always in the air around us. These spores can live in dry timber for many months or even years and cause no damage, however, the presence of moisture can cause these dormant spores to germinate and fungus to spread.
Either form of timber rot can result in severe degradation of the strength of the timber, potentially leading to dangerous structural damage to your property. Signs of timber rot include cracks in wood, visible growth of whitish fungus, and a fungal odour.
Timber rot can occur as a result of any form of damp—where there is moisture in a property, fungi can grow on timber. To reduce the chances of timber rot, any patches of damp should be addressed and treated, even if they have not yet reached any timber. Fixing any issues with ventilation, condensation, or defective plumbing can help prevent the damp that can lead to timber rot.
If you are unfortunate enough to already have timber rot on your property, it is important to work out whether it is dry or wet rot, as each may require a different treatment. A professional damp and timber survey can correctly diagnose the problem. Our skilled damp detectives can provide you with an accurate damp and timber report.
Damp Basements
Basements are notorious for being hotspots for damp. Whether you want to use your basement as a living space or just for storage, damp can prove to be a major obstacle. You can often tell straight away when a basement is prone to damp, as the air will feel humid. You may also have stored items in cardboard boxes and noticed the cardboard becoming soft or even moist to the touch over time.
You may think that damp isn’t much of a problem if it is confined to the basement, especially if you don’t use your basement for much. However, basement damp can spread to other areas of your house, affect air quality, and even cause structural damage.
Many of the causes of damp basements are due to the construction of the building. For example, older houses often lack under-floor drainage systems. Other potential causes include problems with grading, guttering systems, or the sump pump if your house has one. Anywhere at the base of the house that ground water is able to accumulate is a potential cause of basement damp, as it can often penetrate into the walls.
However, some causes are easier to deal with. When damp is due to condensation or leaks, you may be able to tackle it by improving ventilation or fixing damaged pipes. A dehumidifier can also be a simple solution. Independent Damp Surveyor can help you to determine the causes of damp in your basement so you know whether or not to consider extensive damp proofing renovations.
Leaks
You have probably experienced leaks in the home at some point. You may have been alerted by visible or audible dripping or trickling of water coming from a pipe, wall, or other fixture. However, some leaks are unfortunately harder to detect, and are therefore able to continue causing damage for a much longer time before they are addressed.
Leaks are a common cause of damp in the home. Even the tiniest leaks can result in saturation and internal damp. When it comes to the smallest leaks, it is likely that the damp will be discovered before any running water is. You may not even know that there is a leak at all, and instead, believe the problem to be another form of damp.
Leaks can be caused by internal or external water pipes becoming damaged by cracks, or by seals/joints becoming corroded over time. Another common cause of leaks is blockages in external or internal drains.
Of course, serious leaks can cause obvious water damage to decorations, furniture, and other household possessions, and in some cases can even cause flooding. Smaller leaks, however, are more likely to result in damp, which can cause less obvious (but often equally harmful) structural damage.
Leaks can affect any property with running water. Leak-related damp can often resemble rising or penetrating damp, yet the cause is hugely different and is vital to determine before a treatment is applied. Signs that an area of damp may be due to a leak include visible damage to pipes or seals and blocked drains. As well as in areas with plumbing, leaks are also common in locations such as on or near window frames (due to poorly-fitted windows), below flat roofs or roof channels, and around chimneys.
Independent Damp Surveyor use sophisticated leak detection equipment in order to differentiate between this and other forms of damp so that we can recommend the ideal solution.
An independent damp surveyor plays a vital role in discovering and diagnosing damp issues in a property. Their responsibilities include:
Finding the Cause: They are committed to finding the source and cause of the dampness on your property, offering a money-back guarantee if they cannot identify the problem.
Quick and Efficient Service: Surveys are carried out within 48 hours by certified surveyors (CSRT, CSSW, and CSCS), and a report of the findings is sent the same day.
Thorough Inspection: The surveyors develop a complete understanding of materials and construction in the area of concern, using detailed moisture mapping and thermal imaging surveys.
Dealing with Various Damp Types: They are equipped to diagnose and recommend solutions for different types of dampness, including rising damp, penetrating damp, condensation, timber rot, basement damp, and leaks.
Clear Pricing: They offer transparent pricing for their services, with specific rates for damp inspections and combined damp and timber inspections.
Wide Coverage: They cover all areas inside the M25, making their services accessible to a broad range of property owners in London.
By employing an independent damp surveyor like us, property owners can receive an unbiased and accurate assessment of damp issues, leading to effective and targeted solutions.
Choosing an independent damp surveyor ensures an unbiased and accurate assessment of damp issues. They provide objective, expert recommendations without pushing unnecessary products, using advanced techniques to diagnose the specific problem in your property. With transparent pricing and guarantees like “find the cause or your money back,” independent surveyors offer a trustworthy and cost-effective solution. Their focus on your unique needs helps avoid misdiagnosis and ensures you get the right treatment, saving both time and money.
Surveys are usually done in 48 hours and the report is sent to you that same day.
All forms of damp are penetrative by nature; rising damp comes from the ground while penetrating damp can come from any location, including the roof. If exterior walls come in contact with water, this will likely lead to damp invading walls, as the building material draws moisture from exterior sources.
A damp survey and a moisture metre test are two different approaches to identifying and diagnosing damp issues, each with its scope and purpose:
Damp Survey:
A comprehensive examination of a property to diagnose and recommend solutions for damp issues. Conducted by certified surveyors using various techniques, including moisture metres. Results in a detailed report with findings and treatment recommendations.
Moisture Metre Test:
A specific tool is used to measure moisture content in materials like walls and floors. Provides immediate readings of moisture levels, helping to identify damp spots. Part of the diagnostic process doesn’t provide a full diagnosis or treatment plan.
The process of a damp survey involves several key steps to identify, diagnose, and recommend solutions for damp-related problems:
Initial Contact: Scheduling an appointment with a certified damp surveyor, often following a discussion of the perceived issues.
On-Site Inspection: The surveyor conducts a thorough visual inspection of the property, examining walls, floors, ceilings, and other areas for signs of dampness.
Use Diagnostic Tools: Tools such as moisture metres, thermal imaging, and hygrometers may be used to detect moisture levels and identify the type and source of damp.
Identifying the Cause: The surveyor diagnoses the specific cause of the damp, whether it’s rising damp, penetrating damp, condensation, etc.
Recommending Solutions: Based on the diagnosis, the surveyor recommends appropriate treatments, repairs, or preventive measures.
Preparing a Report: A detailed report is prepared, outlining the findings, diagnosis, and recommended treatments, often including cost estimates.
Follow-Up: The surveyor may offer follow-up support or consultation to ensure that the recommended treatments are carried out effectively.
Ignoring dampness in your home can lead to serious consequences, including structural damage that weakens building materials, health issues from mould growth, a decrease in property value, and unsightly aesthetic damage. The longer damp is left untreated, the more extensive and costly the repairs can become. Dampness can also reduce energy efficiency and attract pests like termites. Prompt professional assessment and treatment are essential to prevent these risks and maintain the integrity and value of your home.
You may need a damp survey for your property if you notice signs of damp or moisture-related issues. Common indicators include:
Visible Damp Spots: Wet or damp patches on walls, ceilings, or floors.
Mould or Mildew Growth: Presence of mould or mildew, often accompanied by a musty smell.
Peeling Wallpaper or Paint: Wallpaper or paint that’s bubbling, peeling, or cracking.
Salt Deposits: White, powdery salt deposits on surfaces, known as efflorescence.
Structural Concerns: Crumbling or softening of building materials, such as plaster or wood.
Health Symptoms: Unexplained respiratory issues or allergies that may be linked to dampness.
Buying or Selling a Property: If you’re buying or selling a property, a damp survey can provide peace of mind and transparency about potential damp issues.
Preparing your property for an upcoming damp survey helps the surveyor access all necessary areas and conduct a thorough assessment. Here’s how you can prepare:
Clear Access: Ensure that all areas to be surveyed are easily accessible. Move furniture, rugs, or other obstructions away from walls, especially in areas where you suspect damp.
Remove Personal Items: Clear personal items from shelves, windowsills, and other surfaces that may need to be inspected.
Provide Access to Basements and Attics: If these areas are part of the survey, make sure they are accessible and well-lit.
Inform the Surveyor: If you’ve noticed specific signs of damp or have particular concerns, let the surveyor know in advance so they can pay special attention to those areas.
Pets and Children: Consider arrangements for pets or young children to ensure they are safe and not in the way during the survey.
Utilities: Ensure that utilities like electricity are working, as the surveyor may need them for testing and inspection tools.
Ask Questions: If you’re unsure about anything, don’t hesitate to ask the surveyor beforehand. They can provide specific guidance on how to prepare your property.
Yes, our surveyors are experts in their field and aside from being (CSRT), (CSSW) and (CSCS) certified, they also have significant industry experience.
Equipment Used During Our Surveys
Equipment Used During Our Surveys
Purpose:
Takes comparative moisture readings from walls, ceilings, floors and timber to identify abnormal moisture patterns.
Common Uses / Notes:
Used when investigating rising damp, penetrating damp, condensation and leaks. Readings support the survey but are not a diagnosis on their own.
Subsurface Moisture Meter
Purpose:
Detects moisture beneath the surface of suitable building materials.
Common Uses / Notes:
Helps determine whether moisture is confined to surface finishes or extends into the building fabric.
Non-Damaging Moisture Scanner
Purpose:
Scans surfaces for hidden moisture without causing damage.
Common Uses / Notes:
Ideal for decorated walls, ceilings and flooring where pin testing would be undesirable.
High-Resolution Borescope Camera
Purpose:
Inspects hidden or difficult-to-access areas without opening up large sections of the building.
Common Uses / Notes:
Used beneath floors, inside cavities, behind walls and around pipework to identify damp, leaks, decay and concealed defects.
4K Aerial Inspection Drone
Purpose:
Captures high-resolution images of roofs and other inaccessible external areas.
Common Uses / Notes:
Inspects roof coverings, chimneys, flashing, gutters, valleys, parapets and high-level masonry. Subject to weather, safety requirements and flight regulations.
Atmospheric Humidity Sensor
Purpose:
Measures indoor relative humidity levels.
Common Uses / Notes:
Helps assess condensation and mould risk alongside temperature, ventilation, heating patterns and room usage.
Gas Detection Monitor
Purpose:
Screens for certain airborne gases where unusual odours are present.
Common Uses / Notes:
May detect gases associated with drainage, combustion or flammable substances. Does not replace inspection by a Gas Safe registered engineer where gas appliances or pipework are involved.
Thermal Imaging System
Purpose:
Identifies temperature differences across building surfaces.
Common Uses / Notes:
Helps locate cold spots, thermal bridging, insulation defects and areas associated with concealed moisture. Results always require further investigation to confirm the cause.
Basic Socket and RCD Tester
Purpose:
Performs limited electrical checks during comprehensive surveys.
Common Uses / Notes:
Can identify basic socket wiring issues, AC voltage and RCD operation. It is not an Electrical Installation Condition Report (EICR).
Chemical Vapour Testing Device
Purpose:
Screens for airborne volatile organic compounds (VOCs) and formaldehyde.
Common Uses / Notes:
Used where chemical odours, emissions from materials or indoor air-quality concerns are suspected after leaks or refurbishment.
Fine Air Particle Counter
Purpose:
Measures airborne particulate matter (PM1.0, PM2.5 and PM10)
Common Uses / Notes:
Assists with investigations involving dust, smoke, mould concerns, post-construction contamination and indoor air quality following water damage.
Extraction and Air-Movement Tester
Purpose:
Measures the performance of extractor fans and mechanical ventilation systems.
Common Uses / Notes:
Used in kitchens, bathrooms and utility rooms to identify poor ventilation that may contribute to condensation and mould growth.
Survey Levels and Equipment Provided
Basic Moisture Survey
Standard price: £299 + VAT
Special offer: £199 + VAT until the end of this month
The Level 1 survey provides a basic assessment of the main accessible internal surfaces. It is most appropriate for simple, localised damp concerns where advanced testing is not required.
Equipment Included
- Professional damp meter
Survey Checks
- Accessible walls
- Accessible floors
- Ceilings
- Visible plumbing and drainage leak inspection
- Damp-control and prevention information
Suitable For
This survey is suitable for a customer who has found an isolated damp patch, suspects rising damp in a limited area or wants a straightforward check of the property’s accessible surfaces.
Only a standard damp meter is included. Customers requiring deep moisture detection, timber inspection, thermal imaging or roof inspection should select a higher survey level.
The survey fee will be deducted if we carry out the recommended work.
Damp, Moisture and Timber Survey
Standard price: £399 + VAT
Special offer: £299 + VAT until the end of this month
Level 2 includes everything in the Level 1 inspection and adds deeper moisture detection, non-invasive scanning and timber assessment.
Equipment Included
- Professional damp meter
- Deep-reading moisture meter
- Non-invasive moisture scanner
Survey Checks
- Accessible walls, floors and ceilings
- Visible plumbing and drainage leak checks
- Subsurface moisture readings
- Non-invasive scanning of appropriate materials
- Accessible underfloor and subfloor checks
- Wet rot inspection
- Dry rot inspection
- Woodworm inspection
- Damp prevention information
Suitable For
This level is intended for customers who require a more detailed inspection of dampness and timber condition. It is appropriate when moisture may be concealed within building materials or beneath accessible flooring.
The survey may identify evidence of timber decay or wood-boring insects and assess moisture in locations that cannot be properly examined with a surface meter alone.
Level 2 is particularly useful for homebuyers and sellers who want more information about damp and timber before completing a transaction.
The amount paid for the survey will be deducted from repairs undertaken by us.
Full Damp and Property Condition Survey
Standard price: £499 + VAT
Special offer: £399 + VAT until the end of this month
Level 3 is our most detailed inspection. It combines the checks from Levels 1 and 2 with advanced diagnostic technology, ventilation measurements and external roof-level assessment.
Equipment Included
- Professional damp meter
- Deep-reading moisture meter
- Non-invasive moisture scanner
- Thermal imaging camera
- Indoor humidity sensor
- HD borescope camera
- Airflow and ventilation tester
- 4K inspection drone
- Socket and RCD testing device
Survey Checks
- Accessible walls, floors and ceilings
- Visible plumbing and drainage
- Deep moisture investigation
- Non-destructive moisture scanning
- Accessible floor voids and subfloors
- Wet rot, dry rot and woodworm
- Infrared thermal imaging
- Indoor relative humidity
- Extractor-fan performance
- Borescope examination where suitable
- Visible damp-proof course
- External brickwork and pointing
- Roof coverings and junctions
- Chimney stacks and flashing
- Guttering and rainwater systems
- High-level exterior areas
- General visible structural condition
- Basic Electrical Test, socket and RCD screening
- Drone photographs, subject to safe flying conditions
Suitable For
The Level 3 survey is recommended for buyers, sellers and existing owners who want the most extensive moisture assessment available.
It is especially useful for older properties, houses with several reported defects, basement buildings and cases involving damp, mould, leaks, poor ventilation, timber decay or roof problems.
The inspection considers the property as a connected building rather than examining only the visible damp patch. A roof or gutter defect, for example, may allow water to enter at a high level and appear some distance away internally.
The drone component provides valuable information about roofs, chimneys, parapets and guttering that cannot normally be seen from the ground. These areas may contain hidden repair costs capable of affecting a property purchase.
Identifying damage before buying can help the purchaser budget correctly, request further specialist advice or use the findings during negotiations. Even a relatively small roof defect may cost more to repair than the difference between the survey packages.
If we complete the recommended remedial work, your survey payment will be credited against the price.
Specialist Survey Add-On Services
For complex damp investigations, we offer three specialised laboratory and environmental testing add-ons:
Laboratory Analysis of Plaster Samples
Price £299 + VAT
Description: Small plaster samples are extracted from affected masonry walls and submitted to an independent testing laboratory. The lab analyses the sample for hygroscopic salts (specifically nitrates and chlorides).
Value: Scientifically differentiates true rising damp (which deposits ground salts over time) from surface condensation or lateral penetrating damp. Ensures that remedial recommendations are based on chemical analysis rather than surface meter readings alone.
This service can be beneficial when:
- The cause of low-level dampness is disputed.
- Moisture-meter readings are inconsistent.
- A property has undergone previous damp-proofing.
- Old plaster continues to attract moisture.
- Independent laboratory evidence is required.
- Several possible moisture sources are present.
Note: Salt analysis is only one part of the investigation. Results must be assessed alongside the location of moisture, condition of the masonry, external ground levels, damp-proof course and potential plumbing or rainwater defects. Requires minor invasive plaster sampling (the only add-on requiring material removal). Survey fee credited when repairs are completed by us.
Mould Identification & qPCR DNA Testing
Price £299 + VAT
Description: Surface swab samples are collected and sent to an accredited laboratory for advanced qPCR DNA analysis. Identifies exact mould species, measures spore concentrations and detects hidden fungal growth behind furniture, within void spaces, or under floorboards.
Value: Provides precise scientific data regarding mould toxicity and contamination levels, helping establish the exact scale of cleaning, drying and structural remediation needed.
Laboratory mould testing may be useful when:
- There is an unexplained musty odour.
- Visible mould repeatedly returns.
- Water damage occurred previously.
- Mould is suspected behind cupboards or furniture.
- Contamination may be present in a concealed location.
- The visible extent of growth is uncertain.
- Independent results are needed.
- Remediation work is being planned.
Note: The results can provide a clearer indication of whether contamination appears minor, concentrated or potentially widespread. This information may be used when deciding the scale of cleaning, removal, drying or remedial work required. Testing should be combined with an investigation of the moisture source. Removing visible mould without resolving the underlying condensation, leak or ventilation problem may allow it to return. Survey fee credited against subsequent remediation works completed by us.
Air Quality, Gas, Vapour & Airborne Particle Screening
Price £299 + VAT
Description: Comprehensive environmental air testing including:
- Indoor environmental quality – IAQ
- Volatile organic compounds – VOC and TVOC
- Formaldehyde – HCHO
- Fine airborne particles – PM1.0, PM2.5 and PM10
- Dust and smoke particles
- Sewer gases – H2S, NH3 and CH4
- Flammable gases – CH4 and C3H8
- Carbon monoxide – CO
- Hydrogen sulphide – H2S
- Ammonia – NH3
- Oxygen measurement – O2
- Ventilation and stale-air assessment
- Drain-smell investigation
- Chemical-odour investigation
- Air checks following a leak or flood
- Combustion-related screening
- Building-material off-gassing assessment
- General airborne pollutant monitoring
Value: Pinpoints invisible airborne hazards, toxic sewer gases, chemical off-gassing and foul odours resulting from damp or trapped water.
This service can assist when investigating:
- Persistent foul smells
- Suspected sewer or drain odours
- Chemical smells
- Stale indoor air
- Odours following water damage
- Possible stagnant water
- Building material emissions
- Fine dust after construction work
- Poorly ventilated rooms
Note: Unpleasant odours can have several possible sources. Measurements for specific gases, compounds and particles may help identify which source requires further investigation. The assessment is a screening service and does not replace specialist gas-safety, environmental or medical testing where this is necessary. Survey fee credited against subsequent repair works completed by us.
Contact Us
If you have some questions, please complete this form:
Book and Pay for a survey
If you are ready to book a survey and pay, please complete this form:
Contact Us
If you have some questions, please complete this form:
Book and Pay for a survey
If you are ready to book a survey and pay, please complete this form:
Contact Us
If you have some questions, please complete this form:
Book and Pay for a survey
If you are ready to book a survey and pay, please complete this form: