Establish the scope before specifying products
Approved Document Q states that the requirement applies to new dwellings. Do not infer from this that every repair or window replacement in an existing home triggers a compulsory whole-house security upgrade. Ask the designer to identify which openings and access arrangements are covered by the actual project. [2]
Where a scheme creates flats, consider relevant access through communal parts as well as the individual dwelling entrance. The guidance addresses doors giving access to a dwelling or parts of a building from which access to a dwelling can be gained. [2]
Assess the complete door set
The specification needs to address the door leaf, frame, hardware and method of installation as a coordinated assembly. Evidence for one component does not necessarily demonstrate the performance of the finished door set. Approved Document Q describes recognised evidence routes and construction provisions for secure doors. [2]
Before ordering, ask the supplier to confirm what its evidence covers and whether the proposed size, configuration, glazing and hardware match the tested or assessed arrangement. Refer substitutions back to the designer rather than accepting a different product solely because its marketing uses the same security description.
Windows and other accessible openings
The requirement is not confined to the main front door. Accessible windows, including relevant ground-floor, basement and roof-level openings, need to be considered against the guidance's definition of accessibility. A window on an upper floor should not be ignored where a nearby accessible roof changes how it can be reached. [2]
Show the relevant openings on the specification so the installer knows which evidence and installation details are required. Keep the final product information with the project's compliance record.
Coordinate security with escape and ventilation
Security measures must not undermine the applicable means of escape. Door hardware and opening arrangements need to be considered with the fire design, while guarding and safe operation remain separate requirements. [3] [4]
For new residential buildings assessed under Part O, security also affects whether an opening can realistically be used for cooling, particularly at night. The overheating strategy should not assume that an insecure accessible window can always remain open. [5]
Avoid unsupported product rules
The government FAQ explains that Approved Document Q does not prescribe a particular letter-plate height. A trade recommendation should not therefore be presented as a universal statutory dimension. Use the actual guidance and relevant evidence for the proposed assembly. [6]
At completion, retain product evidence and the agreed installation information, resolve inspection queries and obtain the appropriate final building control document. A security product warranty and statutory completion certification are different records. [7] [2]