Introduction

The following information is intended to introduce the key elements of Part N: Glazing safety, impact, opening and cleaning. Wherever possible the relevant document contents or sections are included with each set of regulations.

Use the link below for the full building regulations document;

• Note: All information is current as of January 2006, as is subject to change.

Protection against impact and manifestation of glazing

Glazing, with which people are likely to come into contact whilst moving in or about the building, shall;
(a) if broken on impact, break in a way which is unlikely to cause injury, or,
(b) resist impact without breaking, or,
(c) be shielded or protected from impact
N1. (1) Protection against impact

Transparent glazing, with which people are likely to come into contact while moving in or about the building, shall incorporate features which make it apparent.
N2. (1) Manifestation of glazing

Note: Requirement N2 does not apply to dwellings

Section 1: Protection against impact
Section 2: Manifestation of glazing

Safe opening and closing of windows etc

Windows, skylights and ventilators which can be opened by people in or about the building shall be so constructed or equipped that they may be opened, closed or adjusted safely.
N3. (1) Safe opening and closing of windows

Note: Requirement N3 does not apply to dwellings

Section 3: Safe opening and closing of windows etc

Safe access for cleaning windows etc

Provision shall be made for any windows, skylights, or any transparent or translucent walls, ceilings or roofs to be safely accessible for cleaning.
N4. (1) Safe access for cleaning windows

Note: Requirement N4 does not apply to;
(a) dwellings, or
(b) any transparent or translucent elements whose surfaces are not intended to be cleaned.

Section 4: Safe access for cleaning windows etc

Further information and useful links

• Making structural changes to your property
• Full guide to the building regulations
• Windows & doors topics

• Find a Builder near you
• Find an Architect near you
• Find an Chartered Surveyor near you

• Building Regulations an explanatory booklet (odpm.gov.uk)
• Party Wall Guidance (rics.org)
• Impact of the Party Wall Act 1996 (odpm.gov.uk)