Standards & certifications
Secured by Design. The standards that prove the door.
A security door is only as trustworthy as the standard it was tested against. Our steel doors are built and tested to LPS 1175 (SR3 to SR4), our aluminium and pivot doors to RC3 to RC4, and the range carries the standards homeowners, architects and insurers recognise: Secured by Design and PAS 24. This page sets out what each one means, what level our doors achieve, and why it matters when you are choosing a door you intend to rely on.
- Secured by DesignPolice initiative
- LPS 1175 SR3 to SR4Steel, security rating
- RC3 to RC4Aluminium and pivot, resistance class
- PAS 24Tested construction
- Made in BritainBritish-made
- Up to 10-year warrantyOn higher security classes
Secured by Design
What does Secured by Design mean on a front door?
Secured by Design is the UK police initiative that certifies products tested to the physical security standards police recommend for homes.
Secured by Design is the UK police initiative that sets the physical security standard for doors, windows and locks used in homes. A product that carries the Secured by Design accreditation has been independently tested and certified by a UKAS-accredited test house against the requirements the police recommend.
It matters for two reasons. First, your insurer. Many home insurance policies require doors and locks to meet a recognised police-approved standard. A Secured by Design door is that standard. Second, forced entry statistics. Doors that meet Secured by Design have been tested specifically for the methods a burglar uses, not a lab simulation of them.
The badge appears on products from manufacturers whose test evidence has been reviewed and accepted by Police Crime Prevention Initiatives, the organisation that runs the scheme. It is a named accreditation, not a marketing term.
LPS 1175 and BS EN 1627
What is LPS 1175, and what do the SR and RC ratings mean?
LPS 1175 SR3 to SR4 (steel) and BS EN 1627 RC3 to RC4 (aluminium and pivot) mean the door has been independently tested to resist a determined, tooled forced-entry attack.
A security rating is a test result, not a marketing word: it tells you the door was attacked in a certified facility and survived to a defined level. UK security doors are rated on one of two independently tested scales, SR (LPS 1175) or RC (BS EN 1627), and our steel doors carry the first, our aluminium and pivot doors the second.
LPS 1175 is the standard that defines how long and how hard a door can be attacked before it fails. Published by LPCB (Loss Prevention Certification Board), it covers the full range of forced-entry methods, and the SR (security rating) scale tells you the resistance level of the specific construction tested.
- SR1Resists casual, opportunistic attack with improvised tools. Threshold for low-risk properties.
- SR2Resists a more sustained attack with standard tools. Recommended for residential properties with an elevated risk.
- SR3Resists a determined, tooled attack with a range of hand tools. Tested against severe forced-entry attempts.
- SR4Resists a heavier, sustained attack with powered tools. The upper specification for high-risk properties.
Our steel front doors are built and tested to SR3 to SR4. For most homes SR3 is the right specification, with SR4 available where the risk at the property calls for it. We confirm the right rating at the free survey. You can read more about our steel front doors and the construction behind the rating.
The RC scale (aluminium and pivot doors). Aluminium and pivot doors are rated on the parallel European scale, RC (resistance class), set out in BS EN 1627. It works the same way: a door is tested against defined tool sets and attack times, and the class number tells you how far it held. Our aluminium and pivot front doors are built and tested to RC3 to RC4. RC3 resists a determined attempt with hand tools; RC4 resists an experienced attacker using heavier tools. SR and RC are different scales from different standards bodies, so we do not claim they convert one to one, but both describe certified, tested forced-entry resistance rather than a manufacturer’s word.
Where the rating comes from. An SR or RC rating belongs to the tested doorset and to the manufacturer who certified it, not to whoever sells it on. Our steel doorsets are tested to LPS 1175 by the manufacturer who builds them; the certificate sits with that manufacturer and we supply, survey and fit the certified product.
PAS 24
What is PAS 24 and why does it apply to your front door?
PAS 24 is the BSI standard for enhanced security performance of external doorsets, covering the full installed assembly including frame, hinges and locking.
PAS 24 is the enhanced security performance standard for external doorsets, published by the British Standards Institution. It tests the complete installed door assembly, not just the door leaf, so it covers the frame, hinges, locking points and weathersealing as a single unit.
The test regime covers:
- Manual attack attempts
- Mechanical attack
- Solid body impact
- Air pressure differential
- Operating force tests
A door that passes PAS 24 has been assessed as a complete security system, not just a panel in a frame. PAS 24 is the construction standard typically cited in planning conditions for new homes in England and Wales, in building regulations guidance, and in Secured by Design product requirements. If your architect or local authority has asked about security door standards, this is often what they mean. It sits alongside the SR and RC ratings rather than replacing them: PAS 24 confirms the doorset passed the enhanced-security test regime, while the SR or RC class tells you the graded forced-entry resistance level.
We supply and fit the complete doorset, so where a door is PAS 24 tested, the certification covers the assembly as you receive it, not just the door leaf on its own. The same standard applies to our aluminium front doors and our pivot front doors.
Certifire
What is Certifire certification on a fire door?
Certifire certifies that a fire door assembly has been independently assessed to meet its stated fire resistance rating (FD30, FD60 or FD90).
Certifire is the fire door certification scheme run by Warringtonfire, a UKAS-accredited test and certification body. A Certifire certificate means the door, frame and hardware have been assessed together as a complete assembly and found to meet the fire performance rating stated, typically FD30, FD60 or FD90 (30, 60 or 90 minutes fire resistance).
For homeowners and commercial buyers specifying fire doors, Certifire provides independent assurance that the door behaves as rated under fire conditions. It is distinct from an LPS 1175 security rating and from PAS 24, which cover forced-entry resistance. A door can hold both a Certifire rating and a security rating.
British-made
Made in Britain: what the badge means and why it matters.
The Made in Britain mark is the government-recognised collective mark for products manufactured in the United Kingdom, administered by Made in Britain CIC. It is awarded on application and requires evidence that the product is made in the UK. For a door buyer, it means the supply chain is auditable and the product standards are governed by UK regulation, not a foreign jurisdiction.
The doors on this site come from manufacturers who hold the Made in Britain mark. That is why the badge appears on each product page. It is not a claim we make about our own premises, it is a verified characteristic of the products we source, survey, supply and fit.
Warranty cover
What warranty cover comes with a Security Doors 'R' Us door?
Our doors come with a comprehensive product guarantee, up to ten years on our higher security classes, and a separate guarantee on the installation work carried out by our own team. Because we supply and fit the door together, one firm stands behind both, so there is no gap between suppliers if a question ever arises. We confirm the exact terms in writing at the quote stage, before any work begins, so there are no questions later about what is and is not covered.
If you have a query about warranty cover on a door you already have from us, contact us directly and we will pull your job record and respond the same day.
Certifications, asked and answered
Straight answers to the questions buyers ask about security standards.
What warranty does my security door come with?
Your door comes with a comprehensive guarantee, up to ten years on our higher security classes, alongside a separate guarantee on our installation. Because we supply and fit the door together, one firm stands behind both the door and the fitting, so there is no gap between suppliers if a question ever arises. The exact terms for your door are confirmed in writing at quote stage.
What does the warranty cover?
The guarantee covers faults in the door, its finish and its hardware, together with the workmanship of our installation. Normal wear, accidental damage and misuse sit outside it, as they would with any door guarantee. We set out exactly what is covered, and for how long, in writing at quote stage, so there are no surprises later.
What certifications do your security doors carry?
The doors we supply are built and tested to the recognised UK security standards: LPS 1175 on steel, BS EN 1627 resistance classes on aluminium and pivot, and PAS 24 across the range, with Secured by Design configurations available on request. These are independent test standards, so the door is assessed as a complete assembly rather than self-certified. We can provide the relevant documentation for the door you choose.
What is PAS 24?
PAS 24 is the British standard for enhanced security performance of a doorset, covering the door, frame, hinges, locking points and seals tested together as one assembled unit. A door that meets PAS 24 has passed a series of attack, impact and load tests as a complete system. It is the standard often referenced in building regulations and by Secured by Design, so if an architect or planning officer asks about security certification, PAS 24 is usually what they mean.
What is LPS 1175?
LPS 1175 is the Loss Prevention Standard for the forced-entry resistance of security products, published by the LPCB and tested independently. It grades products by security rating, from SR1 upwards, based on how long they resist a defined set of tools in a laboratory attack. Our steel doors are built and tested to this standard, with SR3 the right level for most homes.
What is Secured by Design?
Secured by Design is the official UK police security initiative, run by Police Crime Prevention Initiatives, that certifies products meeting its physical security standards. A door earns it only after independent testing by an accredited body, and it must be resubmitted if its specification changes, so it is not a self-certification. Secured by Design configurations are available on request across our range.
Are your doors suitable for Building Regulations Part Q?
Yes, in the right specification. Part Q is the section of the building regulations for England and Wales that sets security requirements for new dwellings, and it points to PAS 24 as the way to meet them. Our PAS 24 configurations are built to satisfy that requirement, so they suit new-build and qualifying conversion projects. Your architect or building control officer confirms whether Part Q applies to your particular project.
Can your security doors be fire rated?
Yes. Fire-rated door configurations are available, including doors built to a Certifire fire rating such as FD60. Fire resistance and security resistance are specified separately, so a door can be built to meet the fire rating your property needs alongside a recognised security standard. We confirm the exact fire requirement at the free survey and specify the door accordingly.
Can your doors achieve acoustic ratings?
Our doors reduce outside noise well, thanks to a dense insulated core, laminated glass and full perimeter seals, which is enough for most homes on a busy street. Where you need a door specified to a measured acoustic rating, we can discuss the requirement and the glazing and sealing it would need at the survey. We confirm what is achievable for your opening rather than quote a figure up front.
How are your security doors tested?
Our doors are tested by independent, accredited laboratories, not self-certified. A tester attacks the complete doorset, the leaf, the frame, the glazing and the locking together, using a defined set of tools for a set time, and records how far it held. The security rating is the result of that test, which is why standards like LPS 1175, BS EN 1627 and PAS 24 carry real weight rather than being marketing words.
Are your doors insurance approved?
The certifications our doors carry, principally Secured by Design, LPS 1175 SR ratings on steel and RC ratings under BS EN 1627 on aluminium and pivot, are the standards many UK home insurers specify when they require a certified front door. We would not advise relying on the phrase "insurance approved" alone, because insurer requirements vary. The right approach is to check with your insurer which named standard they require, then confirm with us that the door you are considering meets it. In most cases it will.
Does Secured by Design make a door police approved?
Secured by Design is a police initiative, not a direct police endorsement. It means the product meets the security standards developed by Police Crime Prevention Initiatives and tested independently. The phrase "police approved" is sometimes used informally to describe this, but the accurate description is: independently tested and certified to the police-developed standard.
Free site survey
Not sure which standard your door needs?
The right rating depends on your property, your area and what your insurer asks for. Book a free site survey and we will look at all three, then recommend the certified door that fits, and confirm the rating in writing before any work begins. We survey and install across London and the Home Counties.