Bespoke Sliding 
Patio Doors for Your Home
Secured by Design Standards
Slimline aluminium sliding patio doors create expansive glass walls with minimal profile sightlines, smoothly opening up your living spaces to the outdoors. At Unique Windows, we supply and install market-leading Origin and Cortizo sliding door systems engineered for maximum energy efficiency and effortless inline operation.
Origin & Cortizo Systems
10-Year Guarantee
FENSA Accredited
Visit our Carshalton showroom to inspect our premium sliding door systems, ultra-slim frames, and smooth running tracks in person.
Customise every detail of your aluminium sliding doors, from minimalist 20mm sightlines and dual-colour finishes to flush thresholds and high-security locking systems.
Over 150 Powder-Coated RAL Colours & Dual-Colour Options
Choose from popular architectural shades like Anthracite Grey, Jet Black, Matt White, or bespoke powder-coated RAL finishes. Dual-colour options allow you to coordinate your interior room design with your property’s exterior palette.
High-Performance Double & Triple Glazed Units
Engineered with softcoat low-emissivity glass, warm edge spacers, and argon gas-filled cavities to deliver superior thermal efficiency. Triple glazing options achieve U-values as low as 1.3 W/m²K for ultimate energy performance.
Multi-Point Deadbolts & Precision Stainless Steel Track Rollers
Ensure complete peace of mind with multi-point locking mechanisms, anti-lift security devices, and high-security lock cylinders. Premium stainless steel inline tracks ensure whisper-quiet, smooth sliding operation every time.
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Bespoke Architectural Glazing.
Aluminium sliding doors engineered for effortless operation and maximum light.
Low Maintenance
Elite Thermal Ratings
Enhanced Security
With over 35 years of industry experience, we provide a bespoke service, exceptional workmanship, and high-performance products.
Expert Guidance
Find clear answers below regarding aluminium sliding systems, sightlines, thermal efficiency, and our professional installation processes.
Aluminium sliding patio doors maximize glass surface area with ultra-slim frames, offering uninterrupted panoramic views and space-saving operation along an inline track without encroaching on internal living spaces or patio furniture.
We supply and install premium Origin sliding doors (including the OS-29 ultra-slim, OS-44, and OS-77 models) as well as Cortizo aluminium sliding systems. These manufacturers deliver UK-crafted precision engineering, robust weather seals, and smooth stainless steel roller mechanisms.
We offer a wide selection of sightlines ranging from Cortizo’s minimalist 20mm sightlines and Origin OS-29 (29mm slimline profile) to Origin OS-44 (44mm sightlines) and OS-77 (77mm classic profile for larger patio openings).
Yes. Our aluminium sliding door systems feature advanced thermal breaks and high-specification double or triple glazing, easily exceeding British Building Regulations and achieving U-values as low as 1.3 W/m²K.
We operate from our family-run showroom at 2 Westmead Corner, Westmead Road, Carshalton, Surrey, SM5 2NZ. We serve homeowners across South London, Surrey, and areas like Puttenham, Guildford, and Redhill.
Absolutely! All our window and door installations come with a comprehensive 10-year guarantee. We are FENSA-registered, meaning your installation fully complies with current Building Regulations.
