Aluminium Bifold Doors for Trade Supply in Lancashire

Aluminium Bifold Door Systems for Trade Supply

We supply two high-performance aluminium bifold systems for trade customers—the AluK Luminia F82 and Optio BS470. Both profiles offer market-leading thermal performance, durability, and ease of installation. U-values as low as 0.9 W/m²K can be achieved when specified with triple glazing, helping you meet Part L and other project requirements.

Available with double or triple glazing, internal or external beading, and a wide range of opening configurations, our aluminium bifolds suit everything from extensions and refurbishments to full new-build developments. Each system supports flexible installation across residential or light commercial applications.

Doors can be powder-coated in any RAL colour, with textured and dual-colour options also available. This allows you to meet client preferences while maintaining project consistency across properties of any style or age.

High-Performance Trade Aluminium Bifolds

AluK Luminia F82 Bifold Door System for Trade Projects

The AluK Luminia F82 is a premium bifold door system engineered for high-end trade installations. It delivers outstanding thermal performance with U-values as low as 0.9 W/m²K (triple glazed) and features a robust aluminium frame depth of 82mm. Available in both open-in and open-out configurations, it supports panel widths up to 1200mm and heights up to 3000mm.

Designed for modern performance demands, the F82 achieves:

• Air permeability: Class 3–4 (600 Pa)
• Water tightness: Up to Class E900 (900 Pa)
• Wind resistance: Class B3 (1200 Pa)
• Security: PAS 24 and Secured by Design (SBD) approved

Standard options include:

• Glazing thickness: 28–44mm
• Internal bead
• Multi-point locking
• Single, dual, textured and anodised finishes
• Sightlines: 97mm (head/cill/jamb), 122mm (meeting stile)

Ideal for both residential extensions and commercial refurbishments.

Trade-Ready Aluminium Bifold Doors for Versatile Installations

AluK BSF70 HI Folding Sliding Door System

The AluK BSF70 HI is a versatile trade bifold system offering robust performance and multiple stacking configurations. Ideal for residential and commercial applications, it supports open-in and open-out setups, including left/right stacking with traffic doors for ease of access.

• Thermal performance: U-values down to 1.1 W/m²K with triple glazing
• Frame depth: 70mm
• Air permeability: Class 4 (600 Pa)
• Water tightness: Class 9a (600 Pa)
• Wind resistance: Class AE2400 (2400 Pa)
• Security: PAS 24 & Secured by Design (SBD)
• Cycle tested: 50,000 cycles
• Third-party certified: Q-Mark approved

The BSF70 HI supports:

• Max panel height: 2400mm standard / 3000mm depending on wind load
• Max panel width: 1200mm
• Max vent weight: 100kg
• Glazing: 24–40mm, internal bead
• Finish options: Single, dual, textured, anodised
• Slimline sightlines: 110mm head/jamb, 130mm cill
• Multi-point locking as standard

Popular configurations include 3-3-0, 5-1-4, and 6-2-4, with additional handling and corner options available on request. Refer to the technical manual for full configuration matrix.

Trusted by Trade Professionals Across Lancashire

What Installers and Developers Say About Our Aluminium Bifold Doors

With over 240 five-star reviews and decades of experience supplying to the trade, our aluminium bifold doors have earned the trust of installers, developers, and builders across the North West. Here’s what our trade customers have to say:

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“ExtendCo Chooses Great Harwood for Lancashire Bifolds”
“Absolutely chuffed with the aluminium bifolds from Great Harwood Windows. Dead easy to install and the clients love the slim profiles and smooth operation. Perfect for our ExtendCo projects across Lancashire!”
— Liam Houghton, ExtendCo

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“Preston Builder Relies on Great Harwood for Quality Bifolds”
“As a busy builder in Preston, I need reliable bifold door supply fast. Great Harwood Windows always deliver quality aluminium systems on time, with spot-on U-values. Proper job!”
— Callum Prescott, Prescott Builds Ltd

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“Blackburn Builders Bank on Great Harwood Bifolds”
“Great Harwood's aluminium bifolds are our go-to for extensions and renovations in Blackburn. The lads find them simple to fit with the adjustable rollers, and the colour range is spot on for modern schemes.”
— Jared Blackshaw, Blackshaw Building Services

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“Burnley Developer Trusts Great Harwood for New-Build Bifolds”
“We've installed Great Harwood's aluminium bifolds on new-builds across Burnley and never had a problem. Good lead times, reliable thermal specs, and a 10-year guarantee—just what we need to keep clients happy.”
— Owen Calderbank, Calderbank Homes

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“Chorley Refurb Specialists Choose Great Harwood Bifolds”
“Great Harwood bifolds are our favourite for Chorley refurbs. Customising the colour and threshold options is a breeze, and they always look stunning once fitted. The 10-year guarantee seals the deal for our customers.”
— Ethan Farnworth, Farnworth Refurbishments Ltd

Resources for Trade: Aluminium Bifold Doors Explained

Looking to compare aluminium bifold doors with other systems? Need practical advice to support your clients or ensure a smooth installation process? These articles provide useful insights for trade professionals:

• Aluminium Bifold Doors vs Sliding Patio Doors: What Suits Your Project?
• Why Aluminium Bifolds Are a Reliable Choice for Modern Builds
• Sliding Door Specification Tips: Aluminium Options for Trade