Crista Fold
Precision in every panel. Our premium aluminium bi-fold door range, engineered for architects, designers and visionary homeowners.
UK Manufactured · 89mm Frame Sightlines · Over 25 Variations · PAS 24 Hardware Option · 50,000 Cycle Durability
Premium Aluminium Bi-Fold Doors for Architects, Designers & Visionary Homeowners
The Crista Fold range is the pinnacle of modern architectural innovation. Designed to seamlessly merge indoor and outdoor living, our luxury bi-fold doors combine exceptional strength, slim 89mm frame sightlines, and effortless operation - every door engineered with uncompromising attention to detail.
Whether for a luxury new build, a premium extension, or a high-specification commercial project, the Crista Fold delivers a bespoke solution that enhances both style and space - crafted entirely at our Yorkshire facility, with over 25 configuration variations and a flush threshold option for step-free access.
Performance Specifications
Reference test: 3-sashes 3-2-1 design, 2.7 m × 2.5 m. All performance data independently verified.
| Property | Class / Value |
|---|---|
| Thermal Transmittance (Uw) | 0.8 W/m²K* |
| Air Permeability | Class 4 |
| Water Tightness | Class E750 |
| Wind Resistance | Class A3 |
| Repeated Openings (main traffic door) | 50,000 cycles |
| Security | PAS 24 hardware (enhanced option) |
*Uw from 1.2 W/m²K. Uw 0.8 W/m²K achievable with double glazing Ug=1 and psi=0.036.
Why Choose the Crista Fold?
At Granada Glazing, we don't just supply products - we craft architectural statements. Every Crista Fold is built using premium-grade aluminium and finished to rigorous standards, combining elegant hardware with our own UK-manufactured frames for unrivalled performance and style.
- Manufactured in the UK at our state-of-the-art Yorkshire facility
- 89mm frame and 110mm panel sightlines for maximum glazing area
- Over 25 configuration variations - inward or outward opening, corner sash and more
- Adjustable jambs in the frame and adjustable toe and heel in the glazing for on-site precision
- Double bearing system with gimbal stabiliser for smooth, reliable operation
- Pre-gasketed bead for faster manufacturing and reliable weather sealing
- 45mm thermal break with 44mm glazing capacity, Uw from 1.2 W/m²K
- Multi-point locking and PAS 24 hardware with our enhanced security option
- Flush threshold option for seamless step-free access
Thermal Performance
A 45mm thermal break in both frame and sash delivers Uw from 1.2 W/m²K, with Uw 0.8 W/m²K achievable using enhanced double glazing (Ug=1, psi=0.036). The 44mm glazing capacity supports high-performance sealed units.
- 45mm thermal break (frame & sash)
- Uw from 1.2 W/m²K (0.8 achievable*)
- 44mm glazing capacity
89mm Frame, 110mm Panel Sightline
An 89mm frame sightline paired with a slim 110mm panel sightline maximises the glazed area, separating environments while flooding spaces with natural light.
- 89mm frame sightline
- 110mm panel sightline
- 44mm glazing capacity
- Pre-gasketed bead for reliable weather sealing
Enhanced Security Option
Choose our enhanced security option for multi-point locking and PAS 24-compliant hardware – delivering the security performance required for residential and commercial specifications.
- Multi-point locking
- PAS 24 hardware (enhanced option)
- Premium-grade aluminium construction
Precision Engineering
Double bearing system with gimbal stabiliser for smooth, reliable operation over 50,000 cycles on the main traffic door. Pre-gasketed bead speeds up manufacturing and improves sealing. Adjustable jambs in the frame and adjustable toe and heel in the glazing for a perfect on-site fit.
- Double bearing system with gimbal stabiliser
- Pre-gasketed bead – faster manufacturing
- Adjustable jambs, toe and heel
- 50,000 cycles (main traffic door)
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) | 1,200mm |
| Max Sash Height (H) | 3,000mm |
| Max Sash Weight | 120kg |
| Glazing Options | 28mm, 30mm & 44mm |
| Frame Sightline | 89mm |
| Panel Sightline | 110mm |
| Thermal Break | 45mm |
Configuration & Opening Options
- Over 25 configuration variations
- Inward or outward opening
- Corner sash solution
- Different cill options
- Threshold options – including flush step-free threshold
Reference test: 3-sashes 3-2-1 design, 2.7 m × 2.5 m. Contact our technical team for project-specific advice.
Finishing Options
Our Folding BiFold is available in a comprehensive range of high-quality finishes applied at our in-house powder-coating plant in Yorkshire. Every colour is applied consistently across frame, sash, and hardware for a fully coordinated installation.
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 Crista Fold accepts three glazing specifications – giving you a flexible range from standard installations through to near-Passive House performance, all within a 44mm maximum glazing capacity.
| Glazing Width | Description |
|---|---|
| 28mm | Standard double-glazed sealed unit. Suitable for most residential and commercial applications. |
| 30mm | Enhanced double-glazed sealed unit for improved thermal and acoustic performance. |
| 44mm | Maximum capacity unit. Supports Uw 0.8 W/m²K with double glazing specified to Ug=1 and psi=0.036 – recommended for high-specification and near-Passive House projects. |
Contact our technical team to specify the right glazing for your project, including glass type, low-E coatings, laminated safety glass, and any security upgrades.
Technical Specification Documents
Download the full technical documentation for our Crista Fold bi-fold door system. Brochures, performance data sheets, drainage profiles, and opening variant guides are available below to support your specification from design to delivery.
Common Questions About the Crista Fold
Discuss your Crista Fold project with us
Whether you're specifying a luxury residential development, a high-specification commercial build, or a premium architectural project, our technical team is ready to help. Complete our enquiry form or call us directly on 01909 499899 to discuss your requirements.
Alternatively, call us today on 01909 499899