Superior performance and specifications

Our aluminium commercial doors deliver outstanding thermal performance with U-values from 0.8 W/(m²K). Each system incorporates advanced polyamide thermal breaks and precision-engineered stile components for maximum energy efficiency across your commercial building.

  • Steel doors: 1.5-1.7 W/(m²K) thermal transmittance with 43dB sound insulation
  • Flush entrance doors: 80mm frame depth with 34mm thermal break zone
  • Sliding systems: Class 7A water tightness and Class C5 wind resistance
  • Bifold doors: Up to 14 sashes with 73mm frame depth and PAS24 security
  • Internal partitions: Bespoke configurations with elite acoustic performance
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Comprehensive colour options

Our commercial doors are available in the complete RAL colour range plus premium anodised finishes. Dual-colour options allow different internal and external appearances to complement your building’s aesthetic requirements.

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Agate Grey

Agate Grey

Wine Red

Wine Red

Walnut Walnuss Wood

Walnut Walnuss Wood

Steel Blue

Steel Blue

Silver Grey

Silver Grey

Sapelly

Sapelly

Plain Grey

Plain Grey

Pine Green

Pine Green

Newcastle Oak Wood

Newcastle Oak Wood

Moss Green

Moss Green

Metallic Ocher

Metallic Ocher

Metallic Anthracite

Metallic Anthracite

Matte Green

Matte Green

Matte Brown

Matte Brown

Matte Grey

Matte Grey

Matte Black

Matte Black

Mahogany

Mahogany

Light Sheffield

Light Sheffield

Light Grey

Light Grey

Light Brown

Light Brown

Gold

Gold

Foliated White

Foliated White

Fir Tree

Fir Tree

Dark Sheffield

Dark Sheffield

Dark Brown

Dark Brown

Cream White

Cream White

Bronze

Bronze

Bright Blue

Bright Blue

Anthracite Grey

Anthracite Grey

Aluminium Silver

Aluminium Silver

Advanced glazing specifications

Commercial glazing ranges from 15mm to 64mm thickness with laminated security glass as standard. Double and triple glazed units incorporate polycarbonate options for increased impact resistance and safety compliance.

  • Maximum glazing: 64mm (flush entrance), 48mm (bifold plus systems)
  • Acoustic performance: Up to 43dB sound reduction for workplace environments
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    Steel and aluminium door specifications

    Our steel commercial doors feature Class 3 and Class 4 burglary resistance, complete with multi-point locking systems. These doors achieve exceptional 1.5-1.7 W/(m²K) thermal values whilst providing fire resistance up to 60 minutes for complete building safety.

    Aluminium systems include flush entrance doors with 80mm frames, sliding doors with 20mm sightlines and bifold configurations up to 3000mm height. All systems incorporate advanced glazing options and weatherproofing to Class 6A standards.

    commercial door
    commercial door

    In-house manufacturing and installation

    We manufacture the majority of our aluminium commercial doors in our London facility, ensuring complete quality control and rapid project turnaround times. Our wide variety of systems includes flush entrance, sliding, bifold and internal partition solutions for every commercial application.

    Full project management from initial design through professional installation with FENSA registration and comprehensive warranties. Trade pricing available for contractors and developers with delivery across the UK for commercial projects.

    Frequently Asked Questions

    Everything you need to know about our windows, doors and installation process.

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    Your journey to beautiful new windows and doors

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    Initial consultation

    Contact us by phone, email or visit our showroom. We'll provide an initial quote and schedule your site visit within 24-48 hours.

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    Site visit and measurement

    If required, our experts visit your property to assess requirements and take precise measurements, ensuring the perfect fit for your home. 

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    Detailed quotation

    Receive your comprehensive quote within 1-2 working days, with no hidden costs and transparent pricing throughout.

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    Manufacturing and production

    Once you approve the quote, we begin manufacturing your bespoke products with our standard 2-3 week turnaround time.

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    Professional installation

    Our experienced team installs your new windows and doors with minimal disruption, followed by comprehensive aftercare support.

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    Customer Reviews

    See honest feedback from real customers who’ve transformed their homes with us.

    Melissa Harmsworth

    I had the great pleasure of commissioning Durwin to install my sliding patio doors. Not easy in a block of flats with management Co to deal with. They were calm flexible in meeting my needs and fitted the doors in...

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    Maulik Shah

    Durwin Glazing absolutely smashed it! From the initial consultation to the final fitting, their service was top-notch. We had them install aluminium double glazing with K glass throughout the house, an internal melamine fire doors, a front steel door with...

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    Sonam Chaudary

    Really happy with the porch door I got from Durwain Glazing. I initially gave the wrong dimensions, but they handled it brilliantly—managed to keep the large door size I wanted by making custom side panels to fit, without any delay...

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    Michael W

    Durwin responded promptly to my request for a quote for two attic windows, and we went from order to installation very quickly - maybe 10 days or less. They were very easy to communicate with and I am pleased with...

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    Ali Asad

    Exceptional service from start to finish by the team at Durwin Glazing. From the initial survey to the clear communication from the office staff, and the fitters ensuring everything was installed to our complete satisfaction - every step was handled...

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    Lily A

    I've just had a beautiful new heritage style aluminium door fitted by Durwin glazing. From the first enquiry, Jazz in the office was super friendly and efficient, answered all my questions quickly and nothing was too much trouble. The door...

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    Get your free quote today

    Ready to transform your home? Contact our friendly team for expert advice and a no-obligation quote. Call 020 8571 5513 or complete our contact form.

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