Concern & action: Retention of air flow - door undercuts
Door undercuts of at least 10mm are needed to keep air floor between rooms with the door closed.
Suggested actions
Before Implementation
Check existing doors have at least a 10mm high undercut and specify any new doors to finish 10mm above floor finish (10mm undercut) to allow for air flow between rooms even with door closed.
During implementation
Check all doors finish 10mm above floor finish (10mm undercut).
After implementation
Explain to users the need for this undercut to retain appropriate air movement between rooms so that it is not blocked when draughts are felt under internal doors.
RELATED MEASURES
SERVICES (8)
Background ventilators and intermittent extract fans
Passive stack ventilation
Continuous mechanical extract ventilation
Continuous mechanical supply and extract ventilation with heat recovery
Passive stack ventilation with heat recovery
Passive stack ventilation with demand control ventilation
Continuous mechanical extract ventilation with demand control ventilation
Continuous mechanical supply and extract ventilation with heat recovery and with demand control ventilation
Passive stack ventilation
Continuous mechanical extract ventilation
Continuous mechanical supply and extract ventilation with heat recovery
Passive stack ventilation with heat recovery
Passive stack ventilation with demand control ventilation
Continuous mechanical extract ventilation with demand control ventilation
Continuous mechanical supply and extract ventilation with heat recovery and with demand control ventilation
