Approved Document F - Ventilation

Approved Document F
(Download from Planning Portal)

MAIN CHANGES IN THE 2006 EDITION

This edition of Approved Document F - Ventilation, replace the 1995 edition. The main changes are:-

Requirement F2 has been moved to Part C (Requirement C2c).

A mainly performance based approach has been adopted.

The provisions have been designed to ventilate buildings having air permeability down to 3m³/m² at 50 Pa.

Ventilator areas are now described in terms of equivalent area, instead of free area.

More guidance has been given for domestic mechanical and natural ventilation systems.

Guidance has been given for ventilation of basements in dwellings.

The recommended air supply for offices has been increased from 8 l/s per person to 10 l/s per person.

Replacement windows should be fitted with trickle ventilators, or an equivalent background ventilation opening should be provided in the same room.

Appendices give guidance on: Passive stack ventilation system design and installation; Good practice on the installation of fans in dwellings; Minimising ingress of external pollutants into buildings in urban areas.