At 3S Doors, we offer a premium selection of roof lights and roof lanterns designed to flood your home with natural daylight, creating a bright, spacious atmosphere. Whether you’re building new, extending, or refurbishing, our products combine sleek modern design with high performance to enhance any property.
At 3S Doors, we believe your home deserves nothing but the finest. That’s why we exclusively offer premium roof lights and lanterns from industry-leading brands like Korniche and Atlas. These collections combine impeccable craftsmanship with cutting-edge design to deliver products that not only enhance natural light but also elevate the aesthetics of your home with timeless elegance and modern sophistication. Choose 3S Doors for solutions that reflect your commitment to quality, style, and enduring beauty.
Sleek, minimalist flat rooflights that maximise daylight entry while maintaining a contemporary aesthetic. Ideal for flat roofs with a minimum 5° pitch, these rooflights come with multiple opening options including fixed or vented models.
A stylish evolution of the flat glass rooflight, the FlatLite™ offers ultra-slim sightlines and excellent thermal performance for an elegant, light-filled space.
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.
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📥 Download Brochures & Watch Product Videos to explore configurations, colour options, and technical details.
📞 Contact us today for a 100% no-obligation quote — expert advice with zero pressure.
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.
Durable and thermally efficient, Atlas aluminium roof lights bring both style and function with premium materials and robust construction.
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.
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.
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