• 35+ years solving mould and condensation problems in over one million UK homes
• Free home surveys that find the right mould solutions for your property
• Quiet, efficient ventilation systems designed to beat mould and key contributing factors
• Which? approved installers available nationwide, ensuring a seamless service
Black, green or white mould spots on your walls or windows? Musty smells that never go away? Condensation or damp patches appearing in different rooms?
Modern homes are more air-tight, which traps moisture indoors. The long-term mould solution? Effective ventilation reduces humidity, improves indoor air quality and helps to prevent mould returning long-term.
Find out how a free home survey from our specialists can help identify the right ventilation system for your home and provide a long-term mould solution.
For more than three decades, envirovent has been the trusted expert for homeowners and landlords across the UK in solving mould and condensation problems. As a leading manufacturer of ventilation systems, we provide effective solutions that improve indoor air quality and create healthier, more comfortable living environments.
We pride ourselves on delivering powerful, effective ventilation solutions that meet the highest industry standards. Our market-leading products, like the Cyclone 8 Extractor Fan , have earned recognition for their excellence, including a Queen's Award for Enterprise – Innovation.
At envirovent, we're committed to delivering lasting mould solutions for your home. Our Cyclone 8 Extractor Fan comes with an 8-year warranty while the ATMOS PIV system comes with a 10-year warranty, giving you long-term protection and peace of mind. With our ongoing maintenance servicing, you can trust that your ventilation system will continue working effectively for years to come.
As a Which? Trusted Trader, we’re proud of our reputation for delivering top-quality installation services. Our nationwide approved installers are specialists in fitting ventilation solutions that tackle mould, condensation and damp issues, improving your indoor air quality. You can rely on us for a professional, trusted service every time.
0-48 hours
Mould can start growing on damp surfaces
0%
Of childhood asthma cases are linked to damp and mould
0-15 litres
Of moisture produced daily by an average family of four
See how our expert teams and solutions help customers tackle mould and improve indoor air quality.
If you have an issue with condensation, mould build up or ventilation issues then envirovent are the company to go to. I have been using their services for 10 years and have had a number of my rental properties surveyed by envirovent where they come up with a solution to eradicate mould issues by creating extra ventilation methods or better ventilation.
Landlord in Croydon
We have suffered condensation mould and running water on our windows for over 40 years. We have tried numerous products to remedy this and never really succeeded. In a matter of days of having this system fitted our problems have been solved. Really pleased. Great service, a brilliant system couldn’t ask for anymore.
Homeowner
We are a returning customer to envirovent. We know their systems work to reduce/remove problems with condensation & mould. We would highly recommend their products & all aspects of their service from initial enquiry, through to installation.
Homeowner
Once you request a free survey*, one of our local ventilation specialists will get in touch to speak to you and discuss your concerns. If ventilation can provide a long term solution, we’ll arrange a convenient time to visit your home.
During the free survey* one of our local ventilation specialists will:
Assess any condensation or mould problems in your property
Take readings of the relative humidity levels
Identify any underlying problems and make recommendations for a long term solution
Free, no-obligation advice for property and homeowners to help improve your home’s ventilation and indoor air quality.
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*Please see additional limitations and fees for the below postcodes and areas
Subject to geographical locations in DG, KA, ML, DD, FK, PH, PA, AB, IV, KW, ZE.
In BT postcodes a £60 fee is applied, which is deductible from the final bill.
In postcodes SS, RM, N, IG, EC, E1 – E9 & E20, CM, SE, SW, NN, NG31-34, PE, IP, NR, CB, CO, LE & SG we are unable to provide an in person survey, please contact us at domestic@envirovent.com or 01423 810 810 to discuss options available.
Frequently Asked Questions
Mould is mainly caused by excess moisture and poor airflow. Mould starts when microscopic spores – which are always present in the air – find a damp surface to settle on. On their own, spores float around harmlessly. But if excess moisture builds and there’s little airflow, they can settle and grow into the black, green, or white patches you see on walls, ceilings, or furniture.
The most common trigger for mould problems inside UK homes is condensation: everyday activities like cooking, showering and even breathing release moisture into the air. If the air isn't able to hold all that extra moisture (or airflow isn't enough), it will drop the moisture onto cold surfaces (this is condensation), creating the perfect environment for mould to develop.
Yes – mould can release spores and particles into the air that, when breathed in, may irritate your lungs and airways. For some people this causes mild symptoms like coughing, a sore throat or headaches. For others – especially children, older adults or people with asthma – it can trigger allergic reactions and more serious breathing difficulties.
Not every mould species is equally harmful, but any visible mould indoors should be treated as a warning sign. Preventing damp and improving ventilation are the safest ways to stop mould and reduce the associated health risks.
Surface cleaning with bleach or sprays is a popular mould removal technique, but it doesn't achieve lasting prevention. That’s because the underlying cause is excess moisture combined with poor airflow.
To reduce the risk of mould:
• Wipe away condensation from windows and sills.
• Use lids when cooking and extractor fans in kitchens and bathrooms.
• Avoid drying clothes indoors where possible.
• Leave a small gap between furniture and external walls so air can circulate.
These steps can help day to day, but the only long-term way to stop mould is to tackle condensation and improve ventilation. During your free home survey, our experts can identify the right ventilation system to keep moisture under control across your whole home.
Cleaning mould with bleach or sprays only removes what you can see on the surface. The spores that cause mould are always present in the air, and if excess moisture and poor airflow remain, those spores will simply settle and grow again.
That’s why mould often seems to “come back” after a few days or weeks – because the underlying conditions haven’t changed. To stop mould returning, you need to control condensation and improve ventilation so damp air doesn’t settle on cold surfaces.
Ventilation helps by tackling the root cause of mould – excess moisture trapped in still air. By moving damp air out and bringing drier air in, ventilation stops condensation from settling on cold surfaces where mould can grow.
Extractor fans are effective in kitchens and bathrooms where most household moisture is produced. For whole-home protection, continuous systems keep air circulating throughout the property, helping to prevent condensation and reduce the conditions that mould needs to thrive.
Mould is a type of fungus that grows when its microscopic spores settle on damp surfaces. These spores are like single-celled seeds that are always present in the air. However, they only develop into visible mould when three things come together: moisture, warmth and organic material such as wood, paper or dust.
Mould grows where there is poor air circulation and high moisture levels. These conditions create the perfect environment for it to thrive. Without addressing the root cause, cleaning or repainting only temporarily hides the problem.
Mould can harm your health. It can trigger allergies, cause breathing difficulties and irritate your skin and throat. To prevent long-term issues, it's crucial to treat the root causes of mould.
