Condensation

Condensation in London Homes

London is nestled on the banks of the River Thames and the climate can generally be described as damp, which can cause serious issues to buildings. Condensation is a common problem, which occurs primarily in the cold winter months and if left unaddressed, condensation can cause significant damage to a building. Those who have invested in double-glazing would not have a condensation problem and if you have yet to invest in uPVC windows and doors, this is a wise long-term investment that boosts the value of a property.

Common Causes of Condensation

Condensation can be a result of the following:

• Ineffective heating – A lack of heating in the winter can be a significant factor for droplets of water to form on walls and windows, especially in rooms that are rarely used. If you have central heating, we recommend heating the whole house for a few hours, at least once a week. This will stop the formation of mould and mildew and coupled with adequate ventilation, condensation should be kept at bay.
• Airing damp clothing indoors – The damp British climate is not conducive to drying washing and it is tempting to air damp garments in the house, yet this results in a lot of moisture being released into the air, adding to any dampness already present. Using a tumble dryer that is not piped to the outside is another way to release excess moisture into the home.
• Condensation in the bathroom – Of course, running a hot bath or shower will cause steam to turn into water droplets and while that cannot be helped, you can open a window and keep the bathroom door closed to allow the moisture to escape the enclosed space. Wiping away water droplets as soon as you can is another way to minimise damage, so keep a couple of dry cloths in the bathroom and make a point of using them.
• Penetrating damp – Moisture entering the building through the external walls can lead to water droplets forming on surfaces and coupled with a lack of ventilation, condensation will naturally form, quickly followed by mould. It is essential that the source of the moisture is identified and remedial work is carried out before damp damage is put right.
• DPC damage – If the DPC membrane is damaged, moisture can rise up the building and this can lead to a buildup of condensation. If this goes unaddressed, the interior walls can be damaged
• Cooking in an enclosed kitchen – If you have a canopy and extractor fan, they should be used when cooking, while opening a window and keeping kitchen doors closed will help to minimise condensation. You should wipe up moisture in the kitchen before it can do any damage.

The best way to deal with condensation is to book an independent damp survey from London Damp Specialists and let an industry professional assess the situation. Only then can you plan effectively and carry out long-term damp-proofing.

Potential Condensation Treatments

Condensation can be treated using the following:

• Damp proof course renovation – If the DPC membrane is damaged, repairs can stop moisture penetration, but this can be difficult and impractical. If a small section of DPC has been damaged, it is possible to remove the brickwork and replace the strip of bitumen, although chemical foam is typically recommended, as it brings other benefits.
• Injectable chemical foam insulation – Adding an effective layer of thermal insulation can be a very effective way of reducing/removing condensation, as well as stopping rising damp in its tracks. There are many benefits to cavity wall insulation; lower energy bills, a warmer interior and prevention of mould, mildew and condensation. 
• Dehumidify the air – The use of a portable dehumidifier will dry out the interior, thus reducing the risk of condensation. Move the machine from room to room and keep an eye on temperatures; in the summer, you can store the machine until the cold weather returns. Many homeowners use a dehumidifier in the loft, which can really help by drying out the air.

If your home suffers from water droplets forming in walls and windows, book an independent damp survey by London Damp Specialists and let the damp experts assess the property and recommend the best damp-proofing solution.