Guide to Composite Sliding Doors

Sliding doors have become a common feature of modern UK homes — not just for aesthetics, but for how they transform everyday living. If you’re looking to bring in more natural light, open up your space, and create a seamless connection to the outdoors, composite sliding doors are one of the most effective upgrades you can make.

This guide explains how Westcoast composite sliding doors combine design, performance, and durability — and why they’re built to outperform standard alternatives.

Why Choose Sliding Doors?

Sliding doors are designed to maximise glazing and minimise visual interruption. The result is brighter interiors, better views, and an easy flow between inside and out.

Key benefits:

Flood your home with natural daylight
Create uninterrupted garden or terrace views
Save space with a sleek, non-intrusive opening system
Enhance indoor-outdoor living

For homeowners, architects, and developers, sliding doors offer functional, style and architectural value.

What Makes Westcoast Composite Sliding Doors Different?

Westcoast sliding doors are engineered with a composite construction, combining two high-performance materials:

Aluminium exterior – weather-resistant, low maintenance, and finished in any RAL colour
Timber interior – warm, natural, and available in clear lacquer, stain, painted white, or a bespoke colour

This dual-material design gives you the best of both worlds: durability on the outside, comfort and style on the inside.

Every door is built in Sweden, designed to withstand harsh Scandinavian climates — making them ideal for the UK’s demanding weather conditions over the long term.

Effortless Operation: Lift & Slide Technology

Despite their size and strength, Westcoast sliding doors are incredibly easy to use.

With lift and slide functionality, turning the handle gently lifts the door panel off its seal, allowing it to glide smoothly and effortlessly along the track. This makes even larger doors simple to open and close — ideal for everyday use.

Configurations & Sizes

Whether you’re working on a compact opening or a full-width glazed wall, there’s a configuration to suit your project.

Available options:

Single sliding door (SDA)
Bi-parting double sliding door (SDC)

Maximum sizes:

Single lift & slide doors: up to 4.4m wide x 2.4m high
Double bi-parting doors: up to 6m wide

Large-format glazing panels help you achieve a true architectural statement while maximising daylight. View the full range: PRODUCTS

Thermal Performance & Glazing Options

Energy efficiency is a critical consideration in any modern home — and this is where Scandinavian engineering stands out.

Triple glazing as standard
Achieves U-values as low as 1.0 W/m²K
Excellent weather-tightness for year-round comfort

Optional upgrades include:

Acoustic glass (ideal for urban environments)
Solar control glass (reduces overheating)
Patterned glass for privacy

The result is a comfortable, energy-efficient living space with reduced heat loss and improved insulation.

Security You Can Trust

Security is built into every Westcoast sliding door.

PAS:24 tested
Secured by Design (SBD) certified

These industry-recognised standards ensure your home is protected without compromising on design.

Sustainable Materials & Craftsmanship

Westcoast sliding doors are manufactured with sustainability in mind:

Timber sourced from responsibly managed forests
Knot-free timber for a premium finish
Water-based, environmentally friendly coatings
Solid oak threshold for durability and warmth underfoot

This attention to detail ensures not just performance, but long-term quality you can see and feel.

Built in Sweden. Designed for UK Living.

Westcoast sliding doors are built in Sweden for extreme climates. That means superior resistance to wind, rain, and temperature changes – a system engineered for decades of reliable performance in the UK climate.

Ready to Transform Your Space?

If you’re planning a renovation or new build, composite sliding doors are one of the most impactful upgrades you can make — both visually and practically.