Monitor and measure existing room and fabric moisture conditions pre refurbishment. Carry out airtightness test (include open flues) to assess infiltration levels in existing building. Assess existing ventilation provision and weigh up ventilation strategy options post refurbishment to address proposed increased airtightness. Take into consideration household size and occupancy pattern. Establish ventilation strategy to provide adequate ventilation in line with AD Part F, including air provision for occupants in the building and adequate ventilation at points of moisture generation within building (bathroom, kitchen, utility and other wet rooms). Beware of personal preferences that may override optimum system settings Decide on operation strategy and balance the need for good user understanding and automation of the ventilation system. Consider automation may be best for higher risk levels. Consider moisture buffering internal finishes and controls triggered by humidity sensors.

Physically test the installed ventilation system capacity to confirm design criteria given in AD part F is met. Communicate the ventilation strategy to occupants clear and simply and check they understand it. Beware of personal preferences that may override optimum system settings.

Monitor indoor air quality post refurbishment and report results. Monitor room and fabric moisture conditions and report findings. Carry out regular visual checks for damp patches and mould growth in vulnerable areas (kitchen, bathrooms)