Condensation Experts Since 1972

At Preservation Treatments our expert team can diagnose and solve almost any kind of condensation problem. Once we’ve found the cause of the issue, we’ll recommend the right solution at the lowest cost.

We cover all of Berkshire, Hampshire, Surrey, London, Sussex and Kent.

Call us to speak to one our friendly team and arrange an inspection.

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Protect your home

A condensation-free home means less damage to walls, ceilings, clothes and property.

Protect your health

Condensation can aggravate health conditions including asthma and allergies.

Protect your investment

Fixing condensation now can save money in the long term.

All about condensation

Condensation accounts for 70% of reported domestic damp and is undoubtedly a contributing cause of damage to walls and furniture.

Condensation can commonly be attributed to a lack of balance between heating and ventilation, resulting in a rise in relative humidity. Air can hold more water vapour when warm than cold. As warm air is cooled, such as when the heating is switched off at night, it will deposit the moisture it cannot hold onto colder surfaces. This causes misted or streaming windows, and in extreme cases walls that are wet to the touch and black mould growth.

Condensation is most common in the colder months of the year when the heating is turned on and windows are kept shut. it will also occur if there is a lack of ventilation in a property particularly in rooms which generate a lot of moisture. mainly bathrooms and kitchens. Property layout, living habits, number of occupants and insulation can all effect condensation levels.

Our solutions and products

Our most successful cures for condensation are our range of Positive Input Ventilation (PIV) units, which actively introduce tempered, filtered air into the property, creating a slight positive pressure and total air change every 45 minutes or so.

Positive Input (PIV) is the process in which fresh air is supplied by a balanced fan located in your loft space into the hallway or landing area of the building, where air is tempered using the additional heater (if included) and the warm air that naturally accumulates at the top of a house.

It is then filtered and gently pushed into the home, causing ‘positive pressurisation’. By continuously supplying fresh, filtered and tempered air this method displaces the damp, stale air that causes condensation via the natural leakage points that all homes have. As a result, the indoor air quality is improved.

The same PIV principle can also be applied in apartments and flats where a wall mounted PIV unit delivers the air into a central corridor/location.

Positive Input Ventilation systems are proven to be quiet, energy efficient and shown to significantly improve indoor air quality with incoming air that is controlled and filtered.

By filtering the air that enters the home, the process can reduce the overall maintenance costs of a property by protecting the fabrics and materials in a home.

Our range of specialist extracts units have the ability to monitor the humidity within the area and increase and decrease automatically to help control humidity levels within the home.

Condensation services in Surrey, Berkshire, Hampshire, London
Lo-Carbon PoziDry Compact Pro
Lo-Carbon PoziDry Pro with Heater
Lo-Carbon Revive 5

Problems caused by condensation


As well as being unsightly and creating an unpleasant smell, mould is damaging and can be costly when it causes premature redecoration or replacement.

Mould growth is most commonly black, but may appear in various shades of green, yellow, pink, grey or white. It will form on any surface where it can find a good source of moisture and organic matter. The water (condensation) is readily available as its food source, together with any organic matter such as paint, plaster, timber, clothing, leather, which are all common hosts to mould spores.

In some cases the mould may be a health hazard. It produces millions of spores which become airborne and can then create respiratory problems and distressing allergic reactions for householders in frequent contact with them. The rooms which are affected may smell ‘musty’. Wardrobes may contain leather shoes, belts, coats and other items which can be ruined by mould growth.

Preservation Treatments provides expert mould remediation services and can fix almost any mould and condensation problem.

Dust mites

Every house has dust mites as they live on the dust which comes from our skin. They leave droppings wherever they go, and the enzymes contained in the droppings can aggravate asthma and other allergic reactions.

The variation in infestation does not depend on cleanliness alone; it is greatly affected by the levels of moisture in the house. Warm, moist homes that lack ventilation; the exact climate that causes condensation, is a perfect breeding ground for the dust mite.

Other symptoms of condensation can be peeling wallpaper, crumbling plaster, spoiled paintwork and discoloration of carpets, curtains and furniture.

Contact us today to book a survey and we will provide a report and quotation, outlining which products are suitable for resolving the condensation problem in your property.

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