Ventilation in buildings + law

HumanShield

HumanShield

HumanShield

Soldato
Joined
26 Apr 2004
Posts
6,165
Location
Wrexham
Is there any legality in not having any ventilation in a room when a window is closed?

My flat is quite warm which is lovely at this time of year, but when the windows are closed, there is basically no ventilation (no vents or anything, which i thought was standard with new windows?)

The place is quite new, but this building was the first of its type in this area and so im guessing a few mistakes were made. A lot of condensation appears overnight, and therefore mould (lovely and healthy im sure you agree) and the only way of getting the window sills and surrounds dry is to leave a window open during the day.

any ideas if this is right?!
 
I believe there are rules on ventilation in the kitchen where gas appliances are concerned, however I don't think a house itself needs to be ventilated aside from a few air bricks.

I'm sure someone will correct me though.
 
The current regulations are, from memory, if the window has trickle ventilators of a certain size, think it is 9000mm squared, or can be opened partially and locked that way to provide ventilation to the room that meets current standards.

Been almost 8 months since i was doing this sort of a thing for a living so very rusty.

SCM
 
windows count as valid ventilation as long as the area of the opening is 1/20th the floor area of the room I think. Not totally sure though :)
 
Table 1 Ventilation: current requirements for various rooms

Habitable room 1/20th of the floor area of the room served 8000mm2
Kitchen and utility Opening window (No minimum size) 4000mm2
Bathroom/Shower rooms Opening window (No minimum size) 4000mm2
Sanitary accommodation 1/20th of the floor area of the room served 4000mm2

Thats current regs, so if it matches this they have followed the rules. The mm2 figures are for size of the trickle vents.

SCM
 
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