Smart Designer Aluminium DoorsDiscover the finest entrance doors on the market today – Smart Designer Doors. Combining unmatched luxury, cutting-edge security, and stunning design, these premium aluminium doors are revolutionizing home entrances across the UK.
Premium Aluminium Doors Built for Style & Security
Our flagship Smart Designer Doors strike the perfect balance between elegant aesthetics and superior security. Crafted by expert fabricators and engineered for lasting performance, these doors feature:
We stand behind the quality of every Smart Designer Door with comprehensive guarantees that cover:
This means your door not only looks stunning but will perform flawlessly for years to come.
Aluminium Bi-Fold DoorsTransform your living space with sleek, secure, and energy-efficient aluminium bi-folding doors. At [Your Company Name], we proudly supply and install premium systems from leading brands: Korniche Bi-Fold, Smart Visofold 1000 Slim Bi-Fold, and Cortizo Bi-Fold Plus — serving homeowners across Pinner, Chesham, Little Chalfont, Gerrards Cross, Brent, Stanmore, and nearby areas.
Perfect for modern extensions, renovations, or new builds, our doors blend architectural style with functional performance to truly elevate your home.
One of the UK’s most trusted aluminium bi-fold systems, the Smart Visofold 1000 Slim offers an ideal balance of contemporary design, performance, and versatility. Now re-engineered to meet the latest 2022 building regulations, it’s the perfect solution for modern homes, renovations, and new builds alike.
Slimmer Sightlines – Just 122mm sash-to-sash for a cleaner look and more glass.
Contemporary Aesthetic – Modern square sash design suits stylish, minimalist homes.
Regulations-Ready – Fully compliant with 2022 Building Regs for U-value and energy targets.
Anti-Drop Hinge – Smart bottom hinge prevents sagging, ensuring long-term reliability.
1.2 U-Value with Triple Glazing – Optional 44mm units deliver top-tier thermal performance.
Unlimited Colour Choice – 250+ RAL colours plus 61 exclusive Smart finishes including Sensations.
Flexible Configurations – Multiple layouts, openings, and thresholds to suit any design.
Thermally Broken Aluminium – Superior insulation and weather resistance built in.
Secure by Design – Multi-point locks on all leaves for maximum security.
✅ Perfect for homeowners and developers looking for sleek aesthetics, full compliance, and long-term performance.
Classic Steel-Look Design Meets Modern Aluminium Performance
Bring timeless elegance to your home with the Smart Heritage Bi-Folding Door system — expertly crafted to replicate the iconic heritage ‘steel look’ while delivering the energy efficiency, security, and ease of modern aluminium.
This beautifully engineered system features an authentic heritage-style sash with three transom bars per panel, perfectly suited for traditional homes, industrial-inspired interiors, or period property renovations.
Steel-Look Design – Slim sightlines with vintage-style glazing bars
1.4 U-Value – High thermal efficiency
Quick-Glaze Beads – Fast, clean installation
3 Transom Bars per Sash – Classic heritage appearance
Slim Aluminium Frame – Strong, durable, and low maintenance
Wide Colour Choice – 250+ RAL colours & finishes
Thermally Broken – Energy-saving performance year-round
Ultra-Slim, Ultra-Efficient, Architect-Approved.
The Cortizo Bi-Fold Plus sets a new benchmark in residential aluminium bi-folding doors. With industry-leading sightlines, thermal performance, and size options, it’s the perfect choice for high-spec home improvements, extensions, or architect-designed new builds.
Ultra-Slim Sightlines – Just 110mm interlock for maximum glass, light, and a sleek modern look.
Exceptional Thermal Efficiency – Achieves 1.3 U-value with standard double glazing. As low as 0.8 U-value with triple glazing.
Corner Opening Option – Adds a striking architectural feature for wow-factor designs.
PAS24 Security Certified – Fully compliant for peace of mind and building control approval.
Market-Leading Panel Sizes – Up to 1200mm x 3000mm for expansive, uninterrupted views.
Flush Threshold Option – Seamless indoor-outdoor flow with matching trims.
Premium Look, Sensible Price – High-end aesthetics without the luxury price tag.
✅ Ideal for architects, designers, and homeowners who demand top-tier aesthetics, size flexibility, and unrivalled thermal performance.
Precision Engineered, Effortlessly Elegant, Installer-Trusted.
The Korniche Aluminium Bi-Fold Door combines sleek aesthetics with exceptional performance. Designed to transform living spaces with uninterrupted views and seamless transitions, Korniche offers ultra-slim sightlines, rapid installation, and outstanding thermal efficiency. Whether you’re upgrading your home, designing a modern extension, or working on a bespoke architectural project, Korniche delivers the perfect balance of style, strength, and simplicity.
✅ Ideal for homeowners seeking style, strength, and advanced security in one ultra-modern system.
We proudly install aluminium bi-fold doors in:
Amersham, Watford, Pinner, Harrow, Chesham, Little Chalfont, Gerrards Cross, Brent, Stanmore, and surrounding areas in Hertfordshire, Buckinghamshire, and North West London.
Learn More & Get a Quote
At 3S Doors, we promise best-in-class customer service and industry-leading turnaround times. From first enquiry to final installation, our team is here to make your bi-fold door journey smooth, personal, and hassle-free.
Looking for beautifully engineered aluminium bi-fold doors at a fair price?
Call us on 02039165359, email us at info@3sdoorsandlocks.co.uk, or request your free quote online.
We’ll guide you through every step — from design advice to installation — with expert knowledge and no pushy sales tactics.
We’re here to make your home improvement journey simple, stylish, and stress-free.
Maximise Light. Minimise Frames. Engineered for Elegance.
At 3S Doors, we supply and install an exclusive range of premium aluminium sliding doors designed for stunning visuals, effortless performance, and robust security. Featuring industry-leading systems from Cortizo and Smart Aluminium, our sliding doors are built to transform your home with ultra-slim sightlines, smooth operation, and customisable finishes.
Whether you’re designing a modern extension, opening up to your garden, or upgrading your home’s energy efficiency, we have the perfect system for you.
Proudly installing sliding doors across Amersham, Stanmore, Harrow, Watford, Pinner, Brent, Gerrards Cross, Chesham, Little Chalfont, and surrounding areas. At 3S Doors, we offer not only the best products, but also exceptional turnaround times and expert support from enquiry to aftercare.
At 3S Doors, we partner with the most reputable and innovative names in the industry to bring you aluminium sliding doors that are beautifully engineered, energy-efficient, and built to last.
Ultra-Slim Framing. Maximum Impact.
A true architectural favourite, the Cor Vision delivers breathtaking glass walls with nearly invisible framing.
Perfect for: luxury extensions, modern renovations, and homes seeking a panoramic aesthetic.
Trusted Performance Meets Modern Style
The Smart Visoglide Plus is a robust and cost-effective solution with customisable options and smooth sliding functionality.
Perfect for: family homes, new builds, and homeowners who want stylish performance at a great value.
Precision Meets Innovation
This next-generation sliding system merges Cortizo’s renowned frame design with Korniche’s patented enhancements for ease of installation and outstanding finish.
Perfect for: homeowners seeking ultra-efficient fitting without compromising on aesthetics or quality.
🔹 Choose from 200+ RAL colours in matt, gloss, satin, or textured finishes
🔹 Available in double or triple track systems
🔹 Custom handles, glazing options, and thresholds
🔹 Dual-colour (inside-outside) finish available
🔹 Flush thresholds and low-profile frames for seamless transitions
At 3S Doors, we only work with systems we trust — tested in real homes, under real conditions.
By offering doors from Smart, Cortizo, and Korniche-enhanced solutions, we deliver:
Ready to upgrade your space with beautifully engineered aluminium sliding doors?
📞 Call us on 02039165359
📧 Email: info@3sdoorsandlocks.co.uk
📝 Or request your 100% free, no-obligation quote online.
Looking for more information? View our product brochures and installation videos, or book a free design consultation with one of our specialists.
At 3S Doors, we are proud to supply and professionally install Smart French Glazed Doors across:
Stanmore, Harrow, Watford, Amersham, Pinner, Brent, Chesham, Gerrards Cross, Little Chalfont, and surrounding areas across North West London, Hertfordshire, and Buckinghamshire.
We’re more than just a supplier — we’re your local partner for high-end aluminium door systems, offering:
Timeless Design. Modern Performance. Made to Last.
Bring classic elegance and modern engineering together with our Smart Aluminium French Glazed Doors — ideal for creating light-filled, secure, and stylish openings to gardens, patios, balconies, or even interior living spaces.
Crafted in the UK by industry leaders Smart Aluminium, these doors offer a stunning balance of heritage charm and modern functionality. Built to perform and designed to impress, they’re the perfect choice for homeowners looking for a long-lasting, beautiful upgrade.
Whether you’re renovating a period home or designing a modern extension, Smart French Glazed Doors are versatile, stylish, and high-performing.
🌳 Rear garden access
🏞️ Balcony or terrace entrances
🪟 Elegant internal room dividers
☀️ Kitchen, orangery or conservatory openings
Their timeless double-door design provides visual balance, smooth functionality, and seamless indoor-outdoor connection — making your space feel bigger and brighter.
Get a Free, No-Obligation Quote!
Stylish, Secure & Energy-Efficient uPVC Doors for Every Home
At 3S Doors, we offer an extensive range of high-performance uPVC residential and French doors from leading UK and European brands including Deceuninck, Eurocell, and REHAU. Whether you’re upgrading your front door or adding elegant garden access, our uPVC doors provide the ideal combination of style, strength, insulation, and affordability.
Built with the latest multi-chambered profile technology and modern security features, these doors are perfect for homes of all types — from traditional terraced houses to modern new builds.
🪟 REHAU uPVC Residential Doors
REHAU is one of the most respected names in fenestration, offering doors that combine high-end engineering with bespoke design flexibility. From heritage-style to ultra-modern looks, REHAU doors deliver outstanding acoustic, thermal, and security performance.
Perfect for: Premium installations or projects needing both style and advanced performance.
Sleek and modern, Deceuninck’s doors offer clean sightlines, excellent energy efficiency, and robust protection against weather and intruders. Their advanced glazing options and heritage-style French doors bring timeless charm and cutting-edge performance to any home.
Perfect for: Homeowners looking for a stylish front or patio door that performs in all seasons.
Eurocell doors are known for durability, low maintenance, and high insulation values. Their French doors bring a bright, open feel to any space, while the front doors provide a secure, stylish entrance.
Perfect for: Families who want long-lasting, low-maintenance solutions at excellent value.
We supply and install uPVC doors across North West London, Hertfordshire, and Buckinghamshire, including:
Stanmore, Harrow, Watford, Amersham, Chesham, Brent, Pinner, Gerrards Cross, Little Chalfont and nearby areas.
No matter the size or type of project, you can count on 3S Doors for expert advice, best-in-class products, and professional service from start to finish.
Looking for beautifully crafted uPVC doors that offer excellent insulation, security, and design flexibility?
📞 Call us at 02039165359
📧 Email: info@3sdoorsandlocks.co.uk
📝 Or use our online form for a free, no-obligation quote
3S Doors – Turning Great First Impressions into Long-Lasting Performance.
At 3S Doors, we are proud to supply and professionally install Smart French Glazed Doors across:
Stanmore, Harrow, Watford, Amersham, Pinner, Brent, Chesham, Gerrards Cross, Little Chalfont, and surrounding areas across North West London, Hertfordshire, and Buckinghamshire.
We’re more than just a supplier — we’re your local partner for high-end aluminium door systems, offering:
Timeless Design. Modern Performance. Made to Last.
Bring classic elegance and modern engineering together with our Smart Aluminium French Glazed Doors — ideal for creating light-filled, secure, and stylish openings to gardens, patios, balconies, or even interior living spaces.
Crafted in the UK by industry leaders Smart Aluminium, these doors offer a stunning balance of heritage charm and modern functionality. Built to perform and designed to impress, they’re the perfect choice for homeowners looking for a long-lasting, beautiful upgrade.
Whether you’re renovating a period home or designing a modern extension, Smart French Glazed Doors are versatile, stylish, and high-performing.
🌳 Rear garden access
🏞️ Balcony or terrace entrances
🪟 Elegant internal room dividers
☀️ Kitchen, orangery or conservatory openings
Their timeless double-door design provides visual balance, smooth functionality, and seamless indoor-outdoor connection — making your space feel bigger and brighter.
Get a Free, No-Obligation Quote!
Our aluminium doors feature advanced thermal insulation, keeping your home energy-efficient year-round. Reduce heating and cooling costs with this smart, eco-friendly solution.
Crafted to endure harsh weather, our doors resist corrosion, fading, and wear. Perfect for rain, wind, or sun, they stay functional and stylish for years.
Built with robust aluminium and premium finishes, our doors offer long-lasting performance. They withstand daily use while maintaining strength and beauty.
Built with robust aluminium and premium finishes, our doors offer long-lasting performance. They withstand daily use while maintaining strength and beauty.
Fluorocarbon paint ensures UV, scratch, and fade resistance. Your door stays vibrant and sleek, even after years of exposure.
Backed by a comprehensive warranty, our doors guarantee quality and reliability. Invest with confidence in 3S Doors’ commitment to excellence.
