What Does Secured by Design Mean for Windows and Doors?
Secured by Design is the official police security initiative, and its Police Preferred Specification accreditation helps identify products meeting recognised security requirements. For windows and doors, it offers a useful way to investigate the evidence behind a security claim. The important question is what the accreditation covers in the proposal for your home.
That requires a little more care than recognising a logo. The manufacturer, product, configuration and installation all matter, as does the distinction between accreditation, a technical standard and building regulations. Understanding those relationships makes it easier to compare quotations and discuss security alongside the architectural and practical requirements of the project.
What Is Secured by Design?
Secured by Design, usually shortened to SBD, addresses crime prevention through design and security specification. Its work extends beyond individual products to the arrangement of buildings and developments. For a homeowner considering replacement glazing, however, the most relevant element is often the accreditation of a particular window or door product rather than an award relating to an entire development.
The initiative’s security standards explanation sets out its role and the basis of Police Preferred Specification. SBD does not conduct the product tests itself. Independent assessment supports the scheme, with the relevant route depending on the type of product. This distinction helps clarify what a reference to police accreditation actually means.
Read the claim in context. A company’s membership, an accredited product and a development award describe different things. A logo on a website does not, on its own, explain which products or configurations are included in the quotation. Ask the person preparing the proposal to identify the relevant listing and explain how it relates to the opening being specified.
For an architect or homeowner, the value lies in using that information within a wider brief. Security needs may differ between a street-facing entrance, an accessible rear window and another opening elsewhere. Establish the building’s circumstances and priorities first, then use the appropriate evidence to support a considered specification that also addresses access, appearance and ordinary use.
What Does Police Preferred Specification Actually Establish?
Police Preferred Specification is a product accreditation, supported by the relevant independent assessment and certification arrangements. Its purpose is to provide a meaningful basis for recognising security performance. It should be understood within the scope of the accredited product rather than treated as a promise about every possible threat, every installation or every item made by a member company.
SBD’s explanation of Police Preferred Specification distinguishes an initial test from continuing certification. Certification includes oversight of production and further assessment over time. This helps address whether manufactured products remain representative of the assessed range, rather than relying solely on the result achieved by a sample at an earlier date.
Ask which organisation issued the supporting certificate and what its schedule covers. A useful explanation identifies the product range, relevant requirements and permitted variations. You should be able to connect those documents to the proposed windows or doors without guessing. If the specification contains options, establish which options are included before treating all of them as carrying the same recognition.
Accreditation is one part of an informed security decision. The entrance still needs appropriate installation, adjustment and operation, and the household must use its locking arrangement correctly. Avoid interpreting any mark as a guarantee that burglary is impossible. Its practical value comes from documented assessment and a clear relationship between that evidence, the selected product and the finished opening.
How Is Secured by Design Different from PAS 24?
PAS 24 is a technical specification addressing enhanced security performance for windows and doorsets. Secured by Design is an initiative operating accreditation schemes. The two are related, but they describe different things. A quotation referring to PAS 24 needs to explain the evidence and product scope; that reference alone does not establish that the proposed product holds SBD accreditation.
The current SBD doorset guidance lists recognised assessment routes and includes PAS 24:2022+A1:2024, alongside information about transitions. Standards and scheme acceptance arrangements change. Check the edition and current position for the actual proposal rather than assuming an old brochure reference or a newer edition number settles every question about acceptance.
The wording of the claim matters too. Tested, certified and accredited should not be treated as interchangeable descriptions. Ask what document supports each statement and whether it relates to the complete proposed assembly. There may be an entirely reasonable answer, but it should be explained clearly enough for the homeowner, architect and builder to understand the specification consistently.
Keep the comparison proportionate. A homeowner does not need to reproduce a testing laboratory’s work or memorise every available standard. The useful task is to obtain an accurate product identity, a current statement of the applicable assessment route and confirmation of the configuration’s scope. That creates a firmer basis for comparing alternatives than collecting security terminology without connecting it to the project.
Does the Accreditation Cover the Complete Window or Doorset?
A complete doorset includes the moving leaf, frame, hardware and any integral glazed or panelled elements within the relevant assembly. Windows similarly need to be considered as configured products. A recognised lock or door component can contribute to the specification, but its status does not automatically establish the status of every finished arrangement that uses it.
Confirm the proposed manufacturer’s identity and product range. Then check the dimensions, opening arrangement, glazing, locking and any accompanying sidelights or fanlights against the supporting scope. A photograph showing an attractive entrance cannot explain those details. The schedule should make clear which components and options form the assembly and which items are separate parts of the surrounding construction.
This becomes particularly useful when a design changes. A wider leaf, different glazing pattern or alternative hardware may need confirmation before the proposal remains valid. It may be an allowed variation, or it may require another arrangement. Obtain that answer before manufacture rather than expecting a general statement about the product family to cover every later revision.
The same discipline helps avoid unnecessary compromise. An initial drawing may have several viable ways to achieve the desired proportions and security brief. Comparing supported configurations early gives the architect room to resolve the design. The objective is a coherent assembly with a clear evidence trail, suited to the opening, rather than a collection of components carrying individually reassuring labels.
Is Secured by Design Required by Building Regulations?
In England, security requirements and SBD accreditation should be considered separately. Approved Document Q provides guidance for security in new dwellings, including relevant accessible windows and doors. SBD is not a universal legal requirement for every replacement window or entrance in an existing home. Establish the scope of the project before interpreting claims about compliance.
A project may also have an agreed security specification or a relevant planning condition that needs addressing. Read the actual documents rather than assuming that one term explains all obligations. The designer and building control professional can clarify the applicable requirements, while any specific scheme commitment should identify the evidence needed to demonstrate that it has been met.
Conversely, work outside a particular requirement’s scope can still benefit from a considered security brief. A homeowner replacing an existing entrance may choose documented attack resistance and appropriate certification because those qualities suit the project. That is a specification decision with practical value, even where the legal context differs from the construction of a new dwelling on another site.
Keep related approvals distinct. Planning permission, listed building consent where relevant and building control address different matters; a product accreditation does not supply those approvals. A useful proposal explains both why the product suits the security brief and how the wider alteration will be handled. That gives the household a clearer understanding of the complete project and the responsibilities of everyone involved.
Can Secure Windows and Doors Still Suit a Design-Led or Historic Home?
Security should enter the architectural discussion early enough to influence a workable design. Frame proportions, glazing divisions, hardware and opening arrangements all affect the appearance of windows and doors. A well-developed brief considers these alongside the required security evidence. Leaving the conversation until a preferred design is ready to order can reduce the available options unnecessarily and create avoidable changes.
For a contemporary home, compare supported arrangements within the intended composition. A generous entrance or large glazed opening may have configuration limits that need checking, but those limits are more useful when known early. Ask for scaled drawings with the actual frame sections and hardware positions. This allows the architect to assess visual effect alongside the confirmed technical proposal.
For a historic home, begin by understanding the existing fabric and whether retention or repair is appropriate. Security improvements should be assessed in that context, with the relevant heritage advice and consents where needed. An accreditation does not establish that a replacement is architecturally suitable or that a particular alteration is acceptable to the building’s special interest.
Bath and the Cotswolds contain buildings where those relationships deserve particular care, while projects across Wiltshire, Somerset and Bristol present many different circumstances. Avoid assuming one regional solution. The useful outcome is an appropriate balance for the individual property, supported by clear documentation and a design that explains how security, architectural character and daily operation have been resolved together.
What Happens to Security After Installation or Alteration?
The installed opening needs to support the intended product performance. Frame fixings, surrounding construction, tolerances and adjustment all matter. Establish who is responsible for each part of that work and what installation instructions apply. A recognised product should not be expected to compensate for an unsuitable substrate, incomplete junction or installation detail that falls outside the agreed requirements.
Handover should explain how the locking arrangement is used. A door that appears closed may need a further specified action to be secured; the exact sequence depends on the product. Demonstrate that operation to the regular users and keep the relevant instructions. Security performance is useful when the assembly is installed correctly and operated in its intended secured state.
Later changes need the same attention. A new cylinder, handle, pet flap or smart-lock operator may affect the supported arrangement. Ask the manufacturer or appropriate certifying organisation what is permitted before modifying it. An accessory’s individual credentials do not prove that the altered complete assembly retains every property originally specified, including any separate fire or escape function it may have.
Follow the maintenance requirements and arrange competent attention when closing or locking becomes difficult. Avoid forcing a mechanism or making undocumented adjustments. Keep the specification, installation information and relevant certification references with the home’s records. They provide a practical starting point for future work and help prevent a small repair becoming an unexamined change to the security design.
What Should You Ask Before Accepting a Security Claim?
Begin with the exact product rather than the broadest claim in the brochure. Ask which manufacturer and range are proposed, what accreditation is claimed and where the current listing can be checked. The answer should relate to the quotation and drawings. If the proposal is still provisional, identify which details must be confirmed before the final security specification can be agreed.
Request a clear explanation of the supporting scope, including the relevant dimensions, glazing and hardware. Agree who installs the assembly and who completes the surrounding building work. These questions make alternatives easier to compare because they expose differences in the actual proposals. They also help prevent an attractive initial price from concealing unresolved specification or construction decisions.
Check insurance requirements directly against the policy and proposed arrangement. Do not assume a particular logo produces a premium reduction or meets every insurer’s conditions automatically. Equally, avoid treating the absence of one accreditation as proof that every alternative is unsuitable. The comparison should establish the project’s requirements and examine relevant evidence with the appropriate professionals where clarification is needed.
CBP’s role as an architectural glazing and specification partner is to help connect these questions with the wider home. Secured by Design can provide valuable information within that process. Its meaning becomes most useful when the product, documentation, configuration and installation are clear, allowing homeowners and architects to make a deliberate decision about security alongside design and everyday use.