NCC 2022 Housing Provisions 10.5 · 10.6
Bedrooms, living, dining, studies. Needs glazing ≥ 10% and openable area ≥ 5% of the floor area.
Light-transmitting area, excluding frames.
Openable sashes, doors and vents to the outside.
Enter the floor area to draw the gauges.
Enter the dimensions above to evaluate compliance.