Condensation

February 23rd, 2011

 

“Condensation is the dampness formed when air laden with water vapour is cooled by contact with a cold surface”.

In an average household of four people each person will contribute approximately four pints of moisture per day through everyday living i.e. taking showers or baths, boiling kettles, cooking etc.  This adds up to well over 100 pints of water vapour per week which is a huge volume of moisture that must go somewhere.

Condensation often misdiagnosed as 'Rising Damp'

Condensation often misdiagnosed as 'Rising Damp'

The air we breathe can hold varying amounts of water vapour, depending on its temperature.  If warm moist air is cooled by a cold surface, such as a window or external wall, it is then no longer able to hold the same amount of water vapour. The air-borne moisture turns into droplets of water and collects on the cold surface:  this is called condensation.

 Every home gets condensation at some time – usually when lots of moisture and steam are being produced – for example, at bath times, when a main meal is being cooked or when clothes are being washed or dried.  It is quite normal to find your bedroom windows misted up in the morning after a cold night:  there is nothing much you can do to stop this.

Condensation is usually at its worst during the winter and it often results in black mould growing on walls and other surfaces.

Sadly many householders have condensation identified incorrectly as rising damp and can sometimes spend several thousand pounds having a full damp proof course installed to the ground floor of their home, along with the associated disruptive and damaging hacking off of old plaster and replastering, only to find that the initial problem is still evident the next winter and their money has been wasted.

We are constantly commissioned by landlords, including many housing associations and letting agents, to carry out condensation surveys when tenants are complaining that their properties are suffering from damp.  Once identified the problem can be solved relatively easily by following our recommendations, various  anti condensation products are available and one of the most effective is a positive pressure unit (as pictured). Positive presure units

Our surveyors use specialist equipment to correctly diagnose condensation/high humidity levels and are fully qualified to provide the best impartial advice to deal with each individual case.

Contact us today for honest, independent advice.

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