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.
Did You Know?
Double glazing and Condensation problems
This is a set of pages about condensation inside the home, and on the indoors of the windows INSIDE the room, and not about condensation between the glass in a double glazed sealed unit.
Now choose your subject:
Note: If have come to this page because you want to know about condensation BETWEEN the two panes of glass, i.e. INSIDE the double glazed sealed unit, then you should go to
NEW: Greatly increased new information article about Condensation, as this is the most common subject I am consulted about, by trade and public.