Sliding BiFold
Engineered for Elegance. Designed to Glide. The ultimate premium aluminium sliding door for architects, developers and discerning homeowners.
UK Manufactured · 20mm Interlock Sightlines · Rw up to 41 dB Acoustic · Double & Triple Track · PAS 24 Security
Luxury Aluminium Sliding Doors for the Modern Home
Granada's Sliding BiFold range delivers seamless indoor-outdoor living with stunning minimalist design and engineering precision. Ideal for both commercial and luxury residential builds, these sliding systems combine ultra-slim profiles with superior performance and complete design flexibility.
Every door is manufactured at our state-of-the-art Yorkshire facility, combining precision-engineered stainless steel rollers for effortless fingertip control with thermally broken aluminium profiles that deliver outstanding energy performance year-round.
Performance Specifications
Reference test: 1.23 m × 1.55 m - 1 sash + 1 fixed light. All performance data independently verified.
| Property | Class / Value |
|---|---|
| Thermal Transmittance (Uw) | ≥ 1.3 W/m²K |
| Acoustic Insulation | Rw up to 41 dB |
| Air Permeability | Class 4 |
| Water Tightness | Class 7A |
| Wind Resistance | Class C5 |
| BFRC Energy Rating | Rated |
| Security | PAS 24 (enhanced option) |
Why Choose Our Sliding BiFold?
At Granada Glazing, we don't just supply products - we craft architectural statements. Our Sliding BiFold is the trusted choice of architects, house developers, and modern homeowners who demand nothing but the best in performance, design, and long-term reliability.
- Manufactured in the UK at our state-of-the-art Yorkshire facility
- Outstanding acoustic insulation - Rw up to 41 dB
- Ultra-slim 20mm interlock sightlines for maximum glazing area
- Double and triple track configurations for enhanced flexibility
- Sashes up to 2,500mm wide × 3,000mm tall, up to 320kg
- Fully integrated handle system for a seamless appearance
- Multiple colours and hardware options to suit any specification
- Left or right opening with large sash options as standard
Thermal & Acoustic Performance
Thermally broken aluminium profiles deliver Uw ≥ 1.3 W/m²K, while the system achieves acoustic insulation of Rw up to 41 dB. BFRC rated. Glazing units from 26mm to 30mm supported.
- Uw ≥ 1.3 W/m²K
- Rw up to 41 dB acoustic insulation
- BFRC energy rated
- Glazing 26mm min – 30mm max
20mm Sightlines & Hidden Track
Only 20mm of aluminium between sliding panels maximises light and view. A hidden track solution allows the frame to be completely concealed along the perimeter for a truly frameless aesthetic.
- 20mm interlock – maximised glazed surface
- Hidden track option – frame concealed from frontal view
- Fully integrated flush handle system
- 116mm frame depth (182mm for 3-rail)
Security & Hardware
Choose our enhanced security option for PAS 24-compliant flush security hardware with concealed locking points. Stainless steel adjustable wheels deliver precision alignment after installation.
- PAS 24 flush security hardware (enhanced option)
- Concealed locking in interlock profile
- Stainless steel adjustable wheels
Versatile Configurations
Single, double and triple track options. Interior or exterior 90° corner without mullion. In-pocket configurations. Left or right opening – sashes up to 2,500mm wide × 3,000mm tall, 320kg.
- 1, 2 or 3 rail configurations
- 90° open corner without mullion
- In-pocket and hidden track possibilities
- Max sash: 2,500 × 3,000mm, 320kg
Maximum Sash Dimensions
All sizes are for guidance only. Maximum weight and dimensions vary by typology – please contact our technical team for project-specific advice.
| Dimension / Spec | Value |
|---|---|
| Max Sash Width (L) | 2,500mm |
| Max Sash Height (H) | 3,000mm |
| Max Sash Weight | 320kg |
| Glazing (min–max) | 26mm – 30mm |
| Frame Depth | 116mm / 182mm (3-rail) |
| Sash Depth | 37mm |
| Interlock | 20mm |
| Profile Thickness (door) | 1.7mm |
| Polyamide Strip | 16mm / 24mm |
Opening & Track Options
- 1, 2 or 3 rail configurations
- Left or right opening
- Interior & exterior 90° corner without mullion
- In-pocket configurations
- Hidden track solution
Reference test: 1.23 m × 1.55 m – 1 sash + 1 fixed light.
Finishing Options
Our Sliding BiFold is available in a wide range of high-quality finishes applied at our in-house powder-coating plant in Yorkshire. Every colour is consistent across the full system – frame, sash, and hardware.
RAL 9016
RAL 7016
RAL 9005
RAL 9001
RAL 7035
RAL 6009
RAL 5010
Int. / Ext.
Standard, mottled and rough texture finishes across 150+ RAL colours.
Different colours inside and out – match your interior and exterior independently.
Premium metallic finish for contemporary and commercial architectural projects.
Realistic timber-look powder coating for warmth in mixed-material schemes.
Specialist coating for healthcare, hospitality and public-sector applications.
Contact our team to discuss colour matching or to request a physical sample for your project.
Glazing Options
The Sliding BiFold accepts glazing units from 26mm minimum to 30mm maximum. This range accommodates a variety of glass specifications to meet thermal, acoustic, and security requirements.
| Glazing Width | Description |
|---|---|
| 26mm (min) | Minimum unit width. Lightweight option for standard applications where sash weight and profile depth are priorities. |
| 28mm | Standard double-glazed sealed unit. Suitable for most residential and commercial applications. |
| 30mm (max) | Maximum unit width. Enhanced sealed unit for improved thermal and acoustic performance. |
All glazing is cut and fitted to exact sash dimensions. Contact our technical team to discuss the right specification – including glass type, coatings, and any acoustic or security upgrades.
Technical Specification Documents
Download the full technical documentation for our Sliding BiFold system. Brochures, performance data sheets, drainage profiles and opening variant guides are available below to support your specification from concept to completion.
Discuss your Sliding BiFold project with us
Whether you're specifying a luxury residential development, a commercial fit-out, or a bespoke architectural project, our technical team is ready to help. Complete our enquiry form or call us directly on 01909 499899.
Alternatively, call us today on 01909 499899