In simple terms, when warm moist air meets a cold surface condensation occurs. On how cold the surfaces of your rooms are and how moist the air is the risk of this happening is based.
A warning that your ventilation, insulation or heating may need improving is mould growth caused by condensation. Mould prevention is necessary. With moist air unable to escape when windows are opened less and buildings become cold it is mostly an issue in winter.
In kitchens and bathrooms for short periods condensation occurs because of the vaporing atmosphere in unheated bedrooms for long periods, also sometimes in corners of rooms or cupboards where movement and ventilation of air are limited.
It is important:
• To prevent moist air from where clothes may be put to dry and spreading to other rooms from bathrooms and kitchens • So that moist air can escape to provide some ventilation to all rooms • To keep your assets very warm
To avoid condensation in the home how to reduce moisture
Proper ventilation of kitchen is essential when cooking, drying or washing clothes. When washing or cooking clothes use it if there is an extractor fan and whenever particularly any sign of misting is shown in the windows. Until the misting has cleared leave the fan on.
Open the windows if there is not an extractor fan, but to restrict the moisture spreading to other rooms keep the door closed as much as possible. To dry off the room shut the door for long enough and keep the bathroom window open after bathing. The roof ventilation systems must also be adequate.
A lot of ventilation occurs through draughty windows and fireplace flues in old houses. But each day unless a ventilator or window is open for a reasonable time for all the time a room is in use it doesn't occur in modern houses and flats.
Too much ventilation wastes heat and in cold weather is uncomfortable, and so a ventilator or slight opened window is all what is needed. As in the form of water vapour each litre of oil used produces the equivalent of about a litre of liquid water avoids the use of flue less gas heaters or portable paraffin if possible. Make sure the rooms they are in are well ventilated if these heaters are used.
With a flue as due to the appliance flue becoming blocked the condensation may have appeared the heating appliances need to be checked if condensation occurs in a room with a solid fuel, oil or gas heating appliance. The underfloor ventilation is needed to be maintained well.
For drying clothes do not use unventilated airing cupboards. To ventilate the room turn on the extractor fan enough or open a window if washing is put out to dry inside. To spread to other rooms as this will allow moist air do not leave the door open.
Even if at a low level whenever possible, it is best to keep the heating on as flats and houses left unheated and unoccupied during the day get cold. To reduce the risk of condensation and to maintain all rooms at not less than 15 degrees centigrade during cold weather it is likely to be necessary even in a house with reasonable ventilation and insulation.