Technical Booklet K Ventilation·Page 59·A24
Mould growth and moisture performance criteria
Requires that moisture performance criteria must be met at all times regardless of occupancy to prevent mould growth, whereas other pollutant limits only apply when the building is occupied.
Mould growth can occur whether the building is occupied or unoccupied, so the performance criteria for moisture (as set out in Table A1) should be met at all times, regardless of occupancy. The other pollutants listed above are only harmful to the occupants when the building is occupied.
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