Protect Your Home with PAS 24-Certified Sash Windows
Burglary statistics don’t lie—over 76% of domestic break-ins in the UK involve access through a door or window. If your sash windows aren’t PAS 24 certified, your home could be an easy target. This enhanced security standard is designed to withstand forced entry attempts using crowbars, drills, and impact testing—offering peace of mind without compromising your property’s heritage aesthetics.
What is PAS 24 Certification & Why Does It Matter?
PAS 24 is a British security standard that ensures windows and doors meet stringent burglary resistance criteria. It involves:
- Rigorous testing against crowbars, forceful impacts, and cutting tools
- Enhanced locking mechanisms designed to resist tampering
- Frame reinforcements that prevent forced removal or break-ins
If your sash windows lack PAS 24 certification, they may not provide the protection needed to deter intruders.
Will PAS 24 Windows Change the Look of My Home?
Absolutely not! PAS 24-compliant sash windows maintain their traditional charm while integrating:
- Discreet multi-point locking systems
- Laminated security glass for enhanced resistance
- Reinforced frames without compromising period aesthetics
Can PAS 24 Windows Reduce My Insurance Costs?
Yes—many insurance companies offer discounts for properties with PAS 24-certified windows. By upgrading, you’re not just improving security—you’re lowering potential premiums and adding value to your home.
Upgrade to PAS 24 & Reduce Your Risk by 50%
Homes with PAS 24 windows and doors are 50% less likely to be targeted by burglars. Don’t leave your home’s security to chance—ensure your sash windows meet modern standards while preserving their timeless appeal.
Get a Free Security Assessment
Understanding PAS 24: The Security Standard for Windows & Doors
What is PAS 24 & Why Does It Matter?
PAS 24 is a UK security standard that ensures windows and doors meet rigorous burglary resistance criteria. Unlike standard windows, PAS 24-certified models undergo third-party testing to confirm their ability to withstand break-in attempts.
- Developed by British Standards Institution (BSI) and Secured by Design (SBD)
- Compliance is independently verified by organisations like UKAS
- Required under Part Q of UK Building Regulations for new builds and major renovations
67% of burglars admit they avoid homes with enhanced security features, including PAS 24 windows.
What Tests Does a PAS 24 Window Undergo?
For certification, windows must pass:
- Manual Attack Testing – Simulating forced entry using crowbars, screwdrivers, and hammers
- Mechanical Load Testing – Measuring resistance to sustained force
- Impact Testing – Withstanding bodyweight-level blows and heavy objects
- Lock Manipulation Tests – Ensuring advanced locks resist tampering
Can Older Homes Upgrade to PAS 24 Windows?
Yes. PAS 24 isn’t just for new builds—heritage sash windows can be upgraded without compromising period aesthetics.
- Available in both timber and uPVC options
- Customisable glazing and locking mechanisms to suit listed buildings
- Reinforced frames designed to match traditional styles
Is Your Home Secure Enough?
Without PAS 24 certification, even expensive windows might lack adequate burglary resistance. The UK government now mandates these windows for all new constructions and major refurbishments under Part Q regulations.
How to Identify PAS 24-Certified Windows in Your Home
Where to Find the PAS 24 Marking
A PAS 24 certification label should be clearly visible on your sash window frame or glass. Manufacturers etch or affix these labels to confirm compliance. If you don’t see a label:
- Check your window frames carefully – Some markings are discreet.
- Review your installation paperwork – PAS 24 certification should be referenced.
- Contact your manufacturer – They can verify whether your windows are certified.
A study found that 1 in 3 homeowners mistakenly believe their windows meet PAS 24 when they don’t.
What If Your Windows Are Missing Certification Labels?
If your sash windows lack PAS 24 markings:
- Ask your installer for an installation certificate – If your windows were recently upgraded, they should provide proof.
- Request manufacturer certification – Some brands don’t label every unit but keep records.
- Arrange a third-party security audit – Certifiers like BSI and UKAS can test compliance.
Can Your Existing Sash Windows Be PAS 24 Certified?
Yes. If your windows are structurally sound, they can be upgraded with:
- Reinforced locks and security glazing
- Additional frame strengthening
- Enhanced sash restrictors
PAS 24 compliance isn’t just about new windows—upgrading your existing ones can enhance security without replacement.
Essential Security Features That Make PAS 24 Windows More Secure
What Makes PAS 24 Sash Windows Stronger Than Standard Ones?
PAS 24-certified sash windows undergo rigorous security testing, including 15+ minutes of sustained attack resistance using crowbars, drills, and force. Unlike standard sash windows, they feature:
- Multi-point locking systems – These secure the window at multiple points, making forced entry far more difficult.
- Laminated or toughened glass – This resists breakage from impacts, significantly reducing the risk of unauthorised access.
- Enhanced frame strength – Reinforced materials prevent drilling and withstand heavy force attempts.
- Anti-lift and anti-jemmy devices – These mechanisms prevent intruders from prying open the sash.
Over 90% of PAS 24-certified windows include reinforced locking systems designed to resist break-ins.
Do PAS 24-Certified Sash Windows Affect Everyday Use?
Not at all. Security features like multi-point locks and reinforced frames don’t make windows harder to open for daily use. Instead, they provide smoother operation while ensuring that only authorised users can unlock them.
Can You Upgrade Existing Sash Windows to PAS 24 Standards?
Yes. If your current sash windows are structurally sound, they can be upgraded with:
- PAS 24-compliant locks
- Reinforced glazing
- Additional security restrictors
These upgrades enhance protection without requiring a full window replacement.
How PAS 24 Compares to Other Security Standards Like Secured by Design
What’s the Difference Between PAS 24 and Secured by Design?
PAS 24 is the baseline security requirement for windows and doors in new UK homes, ensuring resistance to forced entry. Secured by Design (SBD), however, goes beyond PAS 24—it’s a police-backed initiative that enforces additional security measures.
- PAS 24 – The minimum security standard required under UK Building Regulations (Part Q) for new homes and renovations.
- Secured by Design (SBD) – A higher-level certification that incorporates PAS 24 but includes further police-recommended security upgrades.
- BS 7950 – The previous security standard for windows, now replaced by PAS 24.
Do Insurance Companies Recognise PAS 24?
Yes, many insurance providers offer discounts for homes with PAS 24-certified windows. However, properties that meet Secured by Design standards may qualify for even greater reductions due to their enhanced security.
Can I Install Secured by Design Windows Instead of PAS 24?
Yes. SBD-certified windows always meet PAS 24 requirements, but they include:
- Stronger locks and reinforced frames
- Additional burglary resistance measures
- Police-endorsed security features
Homes built to Secured by Design standards experience 87% fewer burglaries, making it the best choice for maximum protection.
Can Your Current Sash Windows Be Upgraded for PAS 24 Compliance?
Can Existing Sash Windows Meet PAS 24 Standards?
Yes, many sash windows can be upgraded to PAS 24 compliance without full replacement. Retrofitting involves installing enhanced security features, ensuring windows resist forced entry attempts.
- High-security locking mechanisms – Multi-point locks and key-operated sash stops improve resistance.
- Laminated or toughened glass – Reduces breakage risk and adds impact resistance.
- Reinforced meeting rails – Strengthens the mid-section where intruders commonly apply force.
- Anti-lift devices – Prevents burglars from forcing the sash out of position.
Is Upgrading More Cost-Effective Than Replacing?
Upgrading existing sash windows for PAS 24 security typically costs 40-60% less than a full replacement. This makes it a practical solution for homeowners looking to improve security without excessive expenditure.
Can Heritage Properties Meet PAS 24 Standards?
Yes. Conservation-friendly security solutions allow listed and heritage properties to meet PAS 24 without altering aesthetics. Discreet reinforcements and specialist security glass ensure compliance while maintaining the traditional look.
How Much Do PAS 24 Windows Cost & Are They Worth It?
What Is the Cost Difference Between PAS 24 and Standard Sash Windows?
PAS 24-certified sash windows typically cost 10-20% more than non-certified alternatives due to enhanced security features. The average replacement cost for PAS 24-compliant sash windows ranges from £800 to £1,500 per window, depending on:
- Frame material – uPVC is cheaper than timber, but aluminium offers superior durability.
- Glazing type – Laminated or toughened glass adds extra protection.
- Additional security features – Multi-point locks, reinforced frames, and anti-lift mechanisms increase costs.
Are PAS 24 Windows a Good Investment?
While PAS 24 windows have a higher upfront cost, they deliver long-term financial benefits:
- Lower insurance premiums – Many insurers offer discounts for homes with accredited security features.
- Burglary prevention – The average cost of a break-in, including repairs and stolen valuables, is £2,856.
- Property value boost – Buyers favour homes with higher security standards.
Are There Grants or Financing for PAS 24 Windows?
Some local councils and government schemes offer funding for security upgrades, particularly in high-risk areas. Flexible financing options may also be available through window suppliers.
Can PAS 24 Windows Lower Your Home Insurance Premiums?
Do Insurers Recognise PAS 24 Windows for Discounts?
Yes, many UK insurers offer premium reductions of up to 15% for homes fitted with PAS 24-certified windows. Since 73% of UK insurers require proof of enhanced security for discounts, PAS 24 compliance demonstrates that your property is less vulnerable to break-ins, lowering risk and potential claims.
How Can PAS 24 Windows Impact Insurance Coverage?
- Lower Premiums: Enhanced security reduces burglary claims, keeping policy costs down.
- Eligibility for Coverage: Some policies require PAS 24 or equivalent standards for theft-related coverage.
- Faster Claims Processing: Compliance simplifies the claims process in the event of a break-in.
What Proof Do Insurers Need for PAS 24 Compliance?
Most insurers will request:
- A PAS 24 certification label on the window or frame.
- Manufacturer documentation confirming PAS 24 compliance.
- An installation certificate from a certified installer.
Are PAS 24 Windows a Cost-Effective Investment?
Given that the average burglary repair bill is £2,856, the cost of upgrading windows is often offset by long-term savings on insurance and security benefits.
Do PAS 24-Certified Windows Improve Energy Efficiency?
How Do PAS 24 Windows Enhance Insulation?
PAS 24-certified windows don’t just bolster security—they also contribute to better thermal performance. Most feature double or triple glazing, which significantly reduces heat loss. These windows also include:
- Advanced frame seals to eliminate draughts and improve airtightness.
- Multi-chambered profiles that enhance insulation.
- A+ energy efficiency ratings, meaning lower energy consumption.
How Much Can You Save on Energy Bills?
Homes with PAS 24-certified double glazing save an average of £195 per year on energy costs. If you upgrade to triple glazing, you gain additional benefits:
- 40% noise reduction compared to single-glazed windows.
- Better retention of indoor warmth, reducing reliance on heating systems.
Best Glazing for Security & Energy Efficiency
For a balance of protection and insulation, laminated double glazing is ideal. If noise reduction is also a priority, argon-filled triple glazing provides superior thermal and acoustic insulation.
Can Existing Sash Windows Be Upgraded?
Yes. Retrofitting security glass and draught-proof seals can boost insulation while maintaining the heritage appearance of sash windows.
Choosing a Reliable PAS 24 Window Installer in London
How to Verify a PAS 24-Certified Window Installer
Finding a qualified installer is crucial to ensuring your PAS 24-certified windows meet compliance and perform as expected. Not all installers are certified—only 55% of UK window installers are fully qualified for PAS 24 products.
To verify a trusted installer:
- Check for accreditations – Look for FENSA, CERTASS, or Secured by Design credentials. 82% of UK homeowners prefer installers with these certifications.
- Request compliance documentation – A genuine PAS 24-certified installer should provide certification papers proving security standard compliance.
- Read online reviews – Look for positive customer feedback and examples of past projects.
What to Look for in a PAS 24 Certification Document
A valid PAS 24 compliance certificate should include:
- Manufacturer details
- Product testing report from an accredited UKAS laboratory
- Specification of security features
Are PAS 24 Windows Covered by a Warranty?
Yes, most reputable installers offer:
- 10-year guarantees on frames and glazing
- Manufacturer-backed security assurances
Why Multiple Quotes Matter
Getting at least three quotes helps compare pricing, service quality, and warranty coverage.
Can PAS 24 Windows Be Installed in Listed or Conservation Properties?
Heritage-Approved PAS 24 Solutions
Installing PAS 24-certified windows in listed buildings and conservation areas requires careful planning to preserve historical character while enhancing security. Fortunately, heritage-approved PAS 24 sash windows are now accepted in 85% of UK conservation areas. These solutions balance period aesthetics with modern security.
Maintaining Aesthetics with Secure Glazing
Traditional sash windows can be upgraded with slimline double glazing, which retains the original sightlines while improving insulation and security. Security glass can also be laminated to enhance burglary resistance without altering the external appearance.
What Security Upgrades Are Allowed in Conservation Areas?
Local planning authorities often require approval before making changes to listed buildings. However, acceptable upgrades typically include:
- Secondary glazing – A discreet, non-intrusive solution that can improve security by up to 60% while maintaining original windows.
- Reinforced locks and meeting rails – Strengthening existing sash windows without altering their appearance.
- Specialist PAS 24 sash window designs – Manufactured to meet both heritage and security regulations.
Do I Need Permission for PAS 24 Windows?
Most councils require conservation area consent for replacing sash windows, but secondary glazing and non-invasive reinforcements often do not require formal approval. Consulting with a heritage specialist ensures compliance.
Secure Your Home with PAS 24-Certified Sash Windows Today!
London has the highest burglary rate in the UK, making home security a top priority. With PAS 24-certified sash windows, you’re investing in superior protection, energy efficiency, and peace of mind. In fact, 87% of homeowners report feeling safer after upgrading to PAS 24 windows.
Why Choose PAS 24 Windows?
- Enhanced Security – Rigorously tested to withstand forced entry attempts.
- Insurance Benefits – Many insurers offer lower premiums for PAS 24-compliant homes.
- Energy Savings – Double and triple glazing options improve insulation and reduce heating costs.
- Classic Aesthetics, Modern Protection – Ideal for period homes, listed buildings, and modern properties alike.
Hear from a London Homeowner:
“After upgrading to PAS 24-certified sash windows, I sleep better knowing my home is secure. The added insulation was a bonus, reducing my energy bills too!” – Emma R., Clapham, London
Take the Next Step Today
✅ Certified Protection – FENSA & Secured by Design Approved
🎯 Trusted Installation – Work with verified PAS 24 specialists
🔒 Complete Security Upgrade – Get expert guidance on the best options for your home
👉 Get a Free Consultation on PAS 24 Windows Now!
FAQ: Common Questions About PAS 24-Certified Sash Windows
Is PAS 24 certification legally required for all new sash windows?
PAS 24 certification is mandatory for all new builds and major renovations under Part Q of UK Building Regulations. Developers must ensure that newly installed windows meet PAS 24 standards before selling homes.
- Older properties are not legally required to have PAS 24-certified windows, but upgrading improves security.
- Listed buildings and conservation areas may have alternative security requirements—consult your local council before making modifications.
- Non-compliance in new builds can lead to fines or enforcement notices from local authorities.
How can I tell if my current sash windows meet PAS 24 standards?
To check if your windows meet PAS 24 compliance:
- Look for a PAS 24 certification label or stamp on the window frame.
- Check for multi-point locks, reinforced meeting rails, and security glazing.
- Review the manufacturer’s documentation for PAS 24 compliance.
- Hire a professional for a security assessment to confirm certification.
Fact: Only 40% of homeowners are aware of PAS 24 certification when purchasing new windows. Non-PAS 24 windows are twice as likely to be breached in a burglary.
What are the differences between PAS 24 and Secured by Design certification?
PAS 24 and Secured by Design (SBD) serve different purposes:
- PAS 24 focuses on forced entry resistance and is a government security standard.
- SBD certification is a police-backed initiative that incorporates PAS 24 but adds extra crime prevention measures.
- A window can be PAS 24-certified without being SBD-approved, but 85% of police-recommended security products are Secured by Design certified.
- Homes with SBD windows are 75% less likely to be burgled.
Can I retrofit my existing sash windows to meet PAS 24 requirements?
Yes! Many sash windows can be upgraded for security with:
- PAS 24-compliant locks and reinforced frames.
- Laminated glass, which is harder to break.
- Draught-proofing and acoustic glazing for added benefits.
Retrofitting costs 40-60% less than full replacement and can increase a property’s resale value by up to 5%. Some conservation authorities allow discreet security enhancements for period properties.
Do PAS 24-certified windows improve soundproofing and energy efficiency?
Yes! PAS 24 windows improve both:
- Triple-glazed PAS 24 windows reduce external noise by up to 40%.
- Energy-efficient PAS 24 windows lower heating costs by up to 15%.
- Enhanced seals reduce draughts, condensation, and heat transfer.
Are PAS 24-certified windows available in different styles and materials?
Absolutely! PAS 24 sash windows come in:
- Materials: Timber, uPVC, and aluminium.
- Aesthetic designs: Traditional, heritage, and contemporary.
- Customisation: Colours, hardware, decorative glazing.
Heritage-approved PAS 24 sash windows are available in 85% of UK conservation areas, maintaining authenticity without sacrificing security.
