Wide Views. Seamless Access. Modern Living.

At AT-ECO Windows & Doors, we supply premium sliding doors from top brands including Internorm, Drutex, Reynaers, and Schüco — each offering advanced performance, security, and architectural appeal.

Sliding Doors in uPVC

What Are Sliding Doors?

Sliding doors are large glazed door systems designed to open horizontally along a track, providing wide, uninterrupted views and easy access to outdoor areas. Known for their slim profiles and smooth operation, sliding doors are ideal for modern homes where space, light, and connection to the outdoors are key design priorities.

Benefits of Sliding Door Design

Sliding doors maximise natural light and create a seamless transition between indoor and outdoor spaces. Whether you’re opening onto a garden, terrace, or balcony, they offer unobstructed views, excellent insulation, and smooth operation.

Benefits of Sliding Door Design

Key Features

  • Wide-Span Glazing: Expansive glass panels for panoramic views and bright interiors.
  • Smooth, Silent Operation: Precision-engineered tracks and rollers ensure effortless movement.
  • Thermal Performance: Double or triple glazing with insulated frames for energy efficiency.
  • Low Threshold Options: Flush floor detailing enhances accessibility and visual continuity.
  • Security & Weather Sealing: Multi-point locking, secure profiles, and advanced sealing systems.

Why Choose Sliding Doors?

  • Ideal for large openings and uninterrupted views
  • Space-saving design compared to hinged doors
  • Enhances indoor-outdoor living experience
  • Exceptional thermal and acoustic insulation
  • Suitable for contemporary, minimalist, and luxury homes

U-Value Performance Comparison

Brand Material U-Value (W/m²K) Security Class Passive House Suitable
Internorm Timber-Aluminium ~0.73 PAS24/SBD/RC2 ✅ Yes
Drutex uPVC / uPVC-Alu ~0.71-0.80 RC2 ✅ Selected models
Reynaers Aluminium ~0.8-1.2 PAS 24/RC2/RC3 ✅ Selected models
Schüco Aluminium ~0.76-1.6 PAS 24/RC2/RC3 ✅ Some variants

Sliding Door Model Comparison

Brand Model Material U-Value (W/m²K) Passive House Notes
Internorm KS 430 uPVC-Aluminium ~0.68 Lift-slide, Passive House suitable, ultra-smooth track
Internorm HS 330 Timber-Aluminium ~0.73 Thermally efficient with natural timber interior
Drutex IGLO-HS uPVC ~0.71 Modern lift-slide with strong insulation and design options
Drutex IGLO-HS ALUCOVER uPVC-Aluminium ~0.73 Aluminium-clad upgrade for enhanced durability
Drutex MB-77HS HI Aluminium ~1.0 Thermally advanced sliding system for energy-efficient homes
Drutex MB-77HS HI MONORAIL Aluminium ~0.75 Single rail sliding solution for large glass panels
Drutex MB-59HS HI Aluminium ~1.5 Budget alternative with thermal break for smaller budgets
Drutex SOFTLINE HS Timber ~1.4 Timber warmth with modern energy standards
Drutex DUOLINE HS Timber-Aluminium ~0.8-1.1 Timber interior with aluminium protection outside
Drutex IGLO EDGE SLIDE uPVC ~0.65 Sharp, modern design with concealed handles
Drutex IGLO SLIDE uPVC ~1.2-1.6 Standard sliding alternative for affordability
Drutex MB-SLIDE Aluminium ~1.2-1.6 Basic thermal aluminium system for sliding doors
Drutex COR VISION Aluminium ~1.3 Minimalist profile with wide openings
Drutex COR VISION PLUS Aluminium ~0.9 Ultra-slim, premium sliding with structural strength
Reynaers HiFinity Aluminium ~0.8 Ultra-slim, premium aesthetic with motorised options
Reynaers MasterPatio Aluminium ~0.82 Next-gen performance for energy and comfort
Reynaers ConceptPatio 155 Aluminium ~1.0-1.6 High-end performance and strength for large spans
Reynaers ConceptPatio 130 Aluminium ~1.5 Balanced insulation and cost-efficiency
Reynaers ConceptPatio 68 Aluminium ~1.6 Cost-effective aluminium sliding with basic insulation
Reynaers SlimPatio 68 Aluminium ~1.2-1.4 Sleek frame, ideal for minimal visual intrusion
Schüco ASS 75 Aluminium ~ 0.83 High-performance system with structural and acoustic efficiency
Schüco ASE 67 Range Aluminium From 1.0 Versatile sliding range with slim profiles and automation

Smart Technology Integration

Selected systems offer:

  • Motorised opening mechanisms
  • Remote-control or app-based operation
  • Automated locking and soft-close features
  • Smart glass options for privacy or solar control

These upgrades are available on premium Internorm, Drutex, Reynaers and Schüco models.

Suitable Applications

  • Garden and patio access
  • Balconies and rooftop terraces
  • Open-plan living extensions
  • New builds and luxury refurbishments
  • Passive House and energy-efficient projects

Warranty and Technical Support

  • Manufacturer-backed product guarantees
  • Maintenance and care guidance
  • Technical specification assistance

Sustainability Considerations

  • Using recyclable aluminium and uPVC profiles
  • Offering FSC-certified timber where applicable (Internorm)
  • Reducing long-term energy use through high insulation
  • Supporting passive solar gain and natural ventilation

We’ll help you choose a solution that supports both your aesthetic vision and energy-efficiency targets.

Areas We Serve

We cover London and the South & East of England, including:

  • London
  • Kent
  • Essex
  • East Sussex
  • West Sussex
  • Surrey
  • Hertfordshire
  • Oxford
  • Oxfordshire
  • Cambridge
  • Cambridgeshire
  • Wiltshire
  • Buckinghamshire
  • Bedfordshire

Recent Work

Working closely with architects, builders, and homeowners, we’ve delivered systems that combine thermal efficiency, modern aesthetics, and long-term durability—across private residences, sustainable developments, and architect-led designs.

Expert Advice & Insights

Stay informed with detailed material comparisons, installation tips, and practical maintenance strategies designed to maximise the longevity and performance of your windows and doors.

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Build It Live South East

Yes, we recommend booking an appointment to ensure personalised service and availability. You can schedule your visit by filling out our contact form or emailing us at [email protected].

During your visit, our team will guide you through our range of premium window and door systems. We’ll answer your questions, help you explore customisation options, and assist in finding the perfect solution for your project.

Absolutely! Bringing your project plans or drawings can help our team better understand your needs and provide tailored recommendations.

Our knowledgeable team is here to help. Whether you need advice on materials, styles, or energy efficiency, we’ll guide you through the process and ensure you make an informed decision.

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