Condensation Problems ?

Poor ventilation is a growing problem, affecting one in five homes in France. If your home is poorly ventilated, you may notice running windows, black mould on walls and furniture, and musty odours.

Condensation  - a rapidly growing problem

The problem is excess humidity. Through daily activities such as cooking, cleaning and merely breathing, the average family adds more than 10 litres of water per day to the enclosed atmosphere of the home.

Condensation forms when this moisture comes into contact with cold surfaces inside the home. This condensation will lead to mould growth, which is not only unpleasant but also damages the fabric of the building and creates unnecessary redecoration and maintenance costs . Studies have shown that living in a humid environment is not only bad for your health, but can also cause asthma and respiratory conditions. Those who spend 16 hours a day at home or more are the most at risk.

Mould from excess condensation


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Where there is moisture, there are also pollutants

Daily activities such as cooking with gas, using cleaning and beauty products, and even lighting candles can produce harmful pollutants that, once released, can remain inside the house and adversely affect our homeland our health. Nitrogen dioxide, volatile organic compounds (VOCs), formaldehyde and dust mite byproducts are just a few of the chemicals and particles that are released by the burning of fuel, new furniture and the use of cleaning sprays. Radon gas is another harmful pollutant found in 32% of French households.


It is no wonder that indoor air is up to 50 times more polluted than outdoor air, which increases our chances of developing serious illnesses, including heart disease and cancer.

the average french household spends


of their time indoors

...of which

16 hours

is at home

chemical products, particles and potentially dangerous biohazards are present in the average indoor environment


the average family produces 10 litres of water per day,

resulting in excess moisture that can lead to condensation

and mould growth.

Condensation affects both old and new homes

Condensation moisture is the main pollutant of indoor air caused by modern life. It can affect both old and new homes. The steps that we take to make our homes warmer and more energy efficient, such as the installation of cavity wall and loft insulation as well as double glazing, can help reduce heating bills. However, as a result, we can create  a hermetically sealed environment in which moist and stale air gets trapped inside the house, causing moisture and pollutants to accumulate.

So what is the solution ?

Proper ventilation will help reduce condensation and rid your home of pollutants, creating a fresh and healthy indoor environment. Mur Guard offers a range of low-energy solutions to significantly improve indoor air quality. Positive Ventilation by Self-Regulating Overpressure (VPSA) is the most popular method in the UK and we are proud to be a partner of the inventors of this technology (1972).


VPSA provides a continuous supply of fresh, filtered air into the home through positive pressurization, creating an environment in which condensation and mildew can not exist and helps reduce allergens and Radon gas levels. MurGuard offers low energy VPSA options for homes with or without attics.