to comply with building regs you need to provide a min 1/20th of the floor area within the opening light of the window. say for a 13.5m2 room you need 0.68m2 of the window to open at least 30 degrees
1/20th is a purge ventilation requirement not glazing, think the OP needs to provide more info on what he wants to achieve, as far as I know there is no requirement for a window in a room under building regs but then the housing act when renting out rooms etc does
1/20th is a purge ventilation requirement not glazing, think the OP needs to provide more info on what he wants to achieve, as far as I know there is no requirement for a window in a room under building regs but then the housing act when renting out rooms etc does
I think that's right. The regs omits to actually say a glazed window is a requirement.
But you do need openable ventilation of minimum 1/20th floor area to comply with ventilation requirements and for all practical purposes I think that really means a window. I suppose you could install an unglazed openable shutter but not sure who would want to do that.
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