Building Regulations Approved Document Q: Security - Dwellings

18.03.2022

The Building Regulations’ Approved Document Q (Part Q)

Requirement Q1: Unauthorised access

Building Regulation Part Q states that windows and doors have to meet the Requirment Q. The Requirment Q described as follows: 

Reasonable provision must be made to resist unauthorised access to; 

  • any dwellings; and
  • any part of a building from which access can be gained to a flat within the building

Reuqirement Q1 applies easily accessible; 

  • Windows, and
  • Doors, 

only in new dwellings (residential buildings). New homes converted from a change of use such as a barn conversion, warehouse conversion are also covered by this requirement. 

Note: This requiement does not apply to replacement windows and doorsets in existing buildings.

Doorsets

Part Q statest that easily accessible doors (including garage doorsets and communal entrance doorsets) that provide access into a dwelling or into a building containing a dwelling should be secure doorsets

Note: If a garage has no interconnecting doorset allowing access into the dwelling, garage doorsets do not need to be secure doorsets. Where access to the dwelling can be gained via an interconnecting doorset from the garage, then either the garage doorset (pedestrian and vehicular) or the interconnecting doorset should be a secure doorset.

Easily accessible doors are defined as doorsets, any part of which is within 2 metres vertically of an accessible level surface such as a ground or basement level, or an access balcony. 

Secured doorsets are defined as those meeting the security standards of British Standards publication PAS 24:2016. 

Note: Bespoke timber secure doorsets designed and manufactured in accordance with Part Q Appendix B are also regarded as secure doorsets. 

Doorsets satisfying other standards that provide similar or better performance are also acceptable. These standards include:

  • STS 201 Issue 5:2013
  • LPS 1175 Issue 7:2010 security rating 2
  • STS 201 Issue 3:2011 burglary rating 2
  • LPS 2081 Issue 1:2015 security rating B

Part Q refers the document of Secured by Designs’s New Homes 2014 for further advice. 

Windows

Part Q states that ground floor, basement and other easily accessible windows (including easily accessible rooflights and roof windows) should be secure windows

Easily accessible windows are defined as: 

  • A window or doorset, any part of which is within 2 metres vertically of an accessible level surface such as a ground or basement level, or an access balcony, or
  • A window within 2 metres vertically of a flat roof or sloping roof (with a pitch of less than 30˚) that is within 3.5 metres
    of ground level.

Secure windows are defined as those meeting the security standards of British Standards publication PAS 24:2016. 

Windows satisfying other standards that provide similar or better performance are also acceptable. These standards include:

  • STS 204 Issue 3:2012
  • LPS 1175 Issue 7:2010 security rating I
  • LPS 2081 Issue 1:2015 security rating A

Part Q refers the document of "Secured by Designs’s New Homes" for further advice. 

Frequently asked questions 

Q: What products fall within the scope of Part Q?

A: The products are as follows: 

  • Easily accessible windows (including rooflights and roof windows) 
  • Easily accessible doors

Q: Are all windows required to meet Part Q?

A: No, Document Q only applies only “easily-accessible” windows and roolights/roof windows. 

Q: Are replacement windows fall within the scope of Part Q?

A: No, replacement windows are not currently required to comply with Building Regulations Part Q.

Q: Which doors are easily accessible doors? 

A: All doors allowing direct access into to the home, e.g. front and rear doors, interconnecting garage doorsets, French doors, bi-fold or sliding patio doorsets, dedicated private flat or apartment entrance doorsets, easily accessible balcony doorsets. 

Q: What’s the difference between Part Q and Secured by Design?

A: The differences are as follows:

  • Both standards call for windows and doors to be made to meet specific security requirements.
  • Part Q is essentially concerned with the security of doors and windows, while the requirements of SBD include other elements of the building and their surroundings.
  • Compliance with Part Q alone will not achieve full SBD certification.
  • Part Q is a legal requirement for windows and doors in new buildings, while SBD is not mandatory.

References