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Guide to English Approved Documents F, L & O for new and existing dwellings
Publication Year
2021
Document Status
Current
Abstract
Summarizes Approved Documents F, L & O for ventilation, energy efficiency, and overheating in new and existing dwellings. Approved Documents F defines three ventilation systems, setting minimum vent sizes and air permeability limits. Approved Documents L establishes U-values for windows and doors, mandates air sealing measures, and updates thermal performance calculations. Approved Documents O introduces overheating mitigation, categorizing locations by risk, limiting glazing areas, and specifying shading and ventilation to control solar gain. The guide also emphasizes background ventilation in window replacements and updates U-value calculations for doors and windows.
Document History
15th December 2021 edition
Publisher Information
Glass and Glazing Federation
The Glass and Glazing Federation represents employers and companies in the flat glass, glazing, window, home improvement, plastics and applied window film industries in the UK.
40 Rushworth Street
London
GGF
UK
Website: http://www.ggf.org.uk
Email: info@ggf.org.uk
Tel: +44 (0)207 939 9100
