FAQ: The abbreviation FENSA stands for FENESTRATION - SELF ASSESSMENT.
The uk dictionary definition of the word fenestral or fenestrate is " belonging to or like a window" The word fenestration is "the arrangement of windows in a building". FENSA is used by double glazing uk trade companies to certify that their replacement windows and doors installed comply with Building Regulations Document L (and more), actually checking av. 1% of all replacement windows installations.
Double glazing and Condensation problems - continued.
...and the answer to 'should I get a dehumidifier' is:
More than likely no, unless you are very bad, and you insist on continuing to put up lots more moisture into the atmosphere than you should for a healthy environment, and if you refuse to ventilate adequately. Electric dehumidifiers work by drawing in the air you have made damp, removing and collecting the moisture and circulating warmer, drier air and they can draw pints of water out of the air but you should not be putting that water up in the first place. They will maintain a room's humidity at around 55% and cost a few pence an hour to run. Installing an extractor fan can help improve ventilation, especially in areas of high humidity such as bathrooms and kitchens, but the problem is that they expel warm air together with the water vapour.
...and the answer to 'is it true they take pints and pints of water out of the air' is: YES, if you are really putting that much up they will work to remove it.
Here is a very good deal:
NEW: Greatly increased new information article about Condensation, as this is the most common subject I am consulted about, by trade and public.