
Customer First Service
Fast Lead Times
24hr Quotations
FREE Nationwide Delivery
We specialise in the supply and manufacture of bespoke aluminium windows and doors. Our purpose is to supply high quality products, delivered on time every time, and at competitive prices. We pride ourselves on being reliable, efficient and easy to deal with. We offer an extensive range of premium aluminium products, including slimline bifolds, patio doors, internal screens, commercial glazing and much more.
- Select a product >
- Windows >
- Bifold Doors >
- Sliding Doors >
- Internal Doors and Screens >
- External Doors >
- Heritage Doors >
Smart Alitherm 400
Featuring Smart’s innovative co-extruded glazing gasket for quicker installation, the Alitherm 400 offers versatile configurations and compliance with PAS 24:2022 and Building Regulations Document L, ensuring superior security and thermal insulation.
- Side Hung Max Width: 864mm
- Side Hung Max Height: 1400mm
- Top Hung Max Width: 1400mm
- Top Hung Max Height: 1500mm
- Fixed Max Width: 2100mm
- Fixed Max Height: 2100mm
- Glazing Options: 24mm, 28mm, 32mm, 36mm, 40mm & 45mm
- 70mm Standard Frame Depth
- Typical U-value 1.4 W/m²K (using correct glass unit)
- WER Rating: A+
- PAS 24:2022 and Document L Compliant
Smart Alitherm 600
Our most popular window, the Alitherm 600 combines modern thermal break technology with flexible design configurations, ensuring energy efficiency and compliance with Building Regulations, making it perfect for residential and light commercial projects.
- Side Hung Max Width: 1000mm
- Side Hung Max Height: 1400mm
- Top Hung Max Width: 1400mm
- Top Hung Max Height: 1500mm
- Fixed Max Width: 2100mm
- Fixed Max Height: 2100mm
- Glazing Options: 28mm to 38mm double or triple glazed units
- 70mm Standard Frame Depth
- Typical U-value 1.3 W/m²K (using correct glass unit)
- WER Rating: B
- PAS 24:2016 and Document L Compliant
- BS Kitemarked to BS 6375-1:2009, BS 7950:1997 and BS 4873
Smart Alitherm Heritage
Ideal for refurbishment projects, Alitherm Heritage windows maintain the traditional aesthetics of period properties while meeting modern performance standards, including thermal efficiency and security compliance.
- Side Hung Max Width: 600mm
- Side Hung Max Height: 1400mm
- Top Hung Max Width: 1400mm
- Top Hung Max Height: 1400mm
- Fixed Max Width: 2100mm
- Fixed Max Height: 2100mm
- Glazing Options: 24mm, 28mm, 32mm & 36mm
- Double or triple glazed units available
- 47mm Frame Depth
- Typical Sightlines: 59mm
- Typical U-value 1.6 W/m²K (using correct glass unit)
- WER Rating: B
- PAS 24:2016 and Document L Compliant
- BS Kitemarked to BS 6375-1:2009 and BS 4873
Smart VS 600 Vertical Sliders
The VS 600 combines the traditional elegance of a vertical sliding sash window with the benefits of modern aluminium technology. Designed for heritage and conservation areas and ideal for high-occupancy commercial buildings like schools and hospitals.
- Vertical Sliding Max Width: 1600mm (based on frame height 1300mm)
- Vertical Sliding Max Height: 2800mm (based on a max frame width of 1250mm)
- Vertical Sliding Max Weight: 50kg (per sash)
- The system is designed to be glazed with 28mm units only
- 126mm Standard Frame Depth
- Typical U-value 1.6 W/m²K (using correct glass unit)
- WER Rating: C
- Document L Compliant
- BS 6375-1:2009 resistance to weather
- Decorative sash horns available
- N.B. Dual colour option not available with the VS 600
Smart Visofold 1000 Slim
The Visofold 1000 Slim is renowned for its ultra-slim profiles that offer sleek, modern aesthetics for both residential and commercial settings. Its innovative Quick-Glaze bead system simplifies installation, and high energy efficiency and versatile configurations make this a great choice for a variety of applications.
- Door Max Width: 1200mm (per sash)
- Door Max Height: 2500mm (per sash)
- Door Max Weight: 100kg
- 28mm Glazing
- 70mm Standard Frame Depth
- Typical Sightlines: 122mm
- U-values as low as 1.5 W/m²K (using 1.0 W/m²K centre pane)
- Weather tested to BS 6375 Part 1: 2009
- Security tested to PAS 24: 2016
Smart Visofold 6000
Featuring one of the slimmest profiles available, offering expansive glass areas and unobstructed views. The Visofold 6000’s design includes high-security glazing, robust locking mechanisms, and versatile customisation options, ensuring excellent performance, thermal efficiency, and security for large openings.
- Folding Door Max Width: 1000mm
- Folding Door Max Height: 2200mm
- Folding Door Max Weight: 100kg
- Glazing Options: 24mm, 28mm, 32mm or 40mm
- Double or triple glazed units available
- Frame Depth: 76mm or 82mm
- Typical Sightlines: 94mm
- U-values as low as 1.5 W/m²K (using 1.0 W/m²K centre pane)
- Weather tested to BS 6375 Part 1: 2009
- Security tested to PAS 24: 2016
Smart Visoglide Plus Patio Doors
Suitable for both residential and commercial use, offering exceptional thermal insulation, robust weather resistance, and versatile configuration options. Visoglide Plus combines contemporary styling with high performance, featuring slim profiles for expansive views and maximum natural light.
- Sliding Door Max Width: Within height & weight limitations
- Sliding Door Max Height: 2500mm (per sash)
- Sliding Door Max Weight: 250kg
- Glazing Options: 28mm or 38mm standard options
- Double or triple glazed units available
- 100mm Standard Frame Depth
- Typical Sightlines: 117mm (outer frame), 83mm (interlock)
- U-values as low as 1.6 W/m²K (using 1.0 W/m²K centre pane)
- Weather tested to BS 6375 Part 1: 2009
- Security tested to PAS 24: 2022
Smart AluSpace Internal Doors and Screens
The AluSpace system enhances interior spaces by allowing natural light to flow between rooms while maintaining a sleek, modern aesthetic. Its slim aluminium frames, customisable configurations, and minimal maintenance make it a practical and stylish solution for dividing spaces.
- Fixed Screen Max Dimensions: 1400 x 2500mm
- Hinged Door Max Dimensions: 900 x 2200mm
- Pivot Door Max Dimensions: 2000 x 2500mm
- Sliding Door Max Dimensions: 1200 x 2500mm
- Glazing Options: 6mm, 8mm or 18mm
- Frame Depth: 35mm
- Typical Sightlines: 35 – 69.5mm
- Premium quality aluminium
- Soundproofing qualities
- Fixed, hinged, pivot, and sliding door configurations
- Single or double door options
Smart Designer Entrance Doors
The Designer Door range from Smart offers a perfect combination of elegance and high performance, ensuring both style and security for any home. Each door is crafted to provide excellent energy efficiency, durability, and superior protection against weather and intrusions.
- Door Max Width: 1200mm
- Door Max Height: 2400mm
- 66mm triple glazed security laminated glass units
- 3 adjustable hinges resistant to 80kg of pressure per hinge
- Glass centre pane U-values from 0.9 W/m²K to 1.1 W/m²K
- 10-point locking for high security
- Hidden hinge protectors provide security against external impacts
- ISEO R7 cylinder, anti-bumping and placed 60mm away from the frame
- Double-rebated EPDM centre gaskets
- Successfully tested to PAS 24:2022 Enhanced Security Performance
- Polyester powder-coated to Qualicoat and EN 12206-1 standards
Smart Alitherm 400 Doors
Available as open-in or open-out, single or double doors, Alitherm 400 doors offer superior weather and thermal performance, PAS 24:2022 security, and can be paired with Smart’s Designer Door panels and hardware for a unique finish.
- Door Max Width: 1000mm (per sash)
- Door Max Height: 2400mm (per sash)
- Glazing Units: 24mm, 28mm, 32mm, 36mm, 40mm, 45mm
- 70mm Standard Frame Depth
- Typical U-value 1.4 W/m²K (using correct glass unit)
- DSER Band B
- PAS 24:2022 and Document L Compliant
Smart Heritage Doors
Designed to replicate traditional steel doors with modern aluminium technology, making them ideal for heritage buildings and conservation projects. Featuring slim sightlines, advanced thermal performance, and robust security, while offering a range of customisable finishes.
- Door Max Width: 900mm
- Door Max Height: 2100mm
- Glazing Options: 24mm – 32mm
- Typical Sightlines: 59mm
- U-values as low as 1.5 W/m²K (using sealed unit 1.0 W/m²K)
- Document L Compliant
- Tape or gasket glazed
- 316 Marine Grade Stainless Steel Hardware options
- Multi-point locking and face-mounted shoot bolts
- Weather Tested to BS 6375 Part 1
- Operation & Strength Tested to BS 6375 Part 2
- Additional Performance Characteristics BS 6375 Part 3
- Security Tested to PAS 24: 2016
Why Choose BDC?
Our Most Popular Products
Our Industry Accreditations
BSI Certified
Our BSI certification means we meet recognised international standards set by the British Standards Institution for quality, safety, and efficiency in our operations.
PAS 24
PAS 24 accreditation signifies enhanced security performance standards. This certification demonstrates that products have been rigorously tested for strength against forced entry.
Secured by Design
Secured by Design status indicates that police-approved standards for security and crime prevention have been met. It ensures that products have been designed to reduce criminal activity and enhance safety.