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Contract Aluminium Bifold Doors

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At Fenea, we specialise in supplying and installing high-performance aluminium bifold doors for the construction industry. While uPVC bifold doors remain a cost-effective option for domestic applications, aluminium is the material of choice for developers, architects, and housebuilders seeking strength, style, and long-term reliability.

Our products are engineered for demanding commercial environments and high-spec residential builds, making them the ideal solution where durability and premium aesthetics are non-negotiable.

The Benchmark In Aluminium Bifold Doors

Fenea supplies and fits the UK’s most trusted and widely specified aluminium bifold door systems, manufactured by Smart Systems and Sheerline, combining innovation with tried-and-tested durability.

Product Highlights:

  • Outstanding Thermal Performance
    Our aluminium bifolds can achieve U-values as low as 1.4 W/K, offering excellent energy efficiency for both residential and commercial use.

  • Ultra-Slim Sightlines
    Typical 122mm sightlines mean slimmer profiles, larger panes, and more natural light.

  • Secure by Design
    Our bifolds are fully tested to PAS 24 for security, with multi-point locking and high-strength shoot-bolts on all panels.

  • Versatile Configurations
    Choose from inward or outward opening panels, multiple threshold options, and a wide range of leaf arrangements to suit any aperture. Acoustic or laminated glazing for Part Q compliance are also available.

  • Premium Finish Options
    Customise with any RAL colour or select from a range of textured finishes. Dual colour options are also available for interior-exterior design flexibility.

  • Proven Track Record
    With thousands of installations across the UK, Fenea bifolds are backed by  Sheerline and Smart Systems’ industry-leading R&D and technical support.

Get A Super-Competitive Estimate For Your Project Now

Whether you’re developing a single new build, period renovation or a large housing estate, we can provide the ideal aluminium bifold door solution for your project. Contact us today to discuss your requirements, request a quote, or arrange a site survey.


Case Study: Belper, Derbyshire

Aluminium bifold doorsAluminium bifold doors, flush casement windows and bespoke French doors for this stunning Belper property.

Complete Aluminium Bifold Doors Supply & Installation Service

We provide a fully managed, end-to-end service, from initial specification to final installation. Our team works closely with your team to ensure a smooth, efficient, and cost-effective process.

 

Why Choose Fenea?

Expert Project Management – We handle everything from surveys and scheduling to on-site coordination, ensuring projects are delivered on time and within budget.

Skilled Installation Teams – Our experienced fitters work nationwide and ensure a perfect installation, following strict quality control standards for airtight seals and long-lasting performance.

Competitive Trade Pricing – We offer cost-effective solutions tailored to residential developments.

Expert Advice – Our highly experienced team can advise on the right solutions for your project, from technical expertise to cost-saving options.

Compliance & Certification – Our products meet or exceed industry regulations, including Part L, PAS 24 security standards, and Document Q compliance for new builds.

Bifold Doors Gallery

Key Features Of Fenea Aluminium Bifold Doors

At Fenea, we exclusively install high-spec aluminium bifold door systems from Smart Systems and Sheerline, designed to meet the rigorous demands of modern construction projects. From thermal efficiency to customisation and compliance, every feature is engineered with performance in mind.

Slim-Line Profiles for a Contemporary Finish

Our bifolds feature attractive, slim-line profiles available in both square and rounded edge options. These reduced sightlines (typically 122mm) not only provide a sleek, modern aesthetic but also maximise the glazed area, bringing in more natural light and delivering uninterrupted views.

Outstanding Thermal Performance

Each profile is fitted with a polyamide thermal break or multi-chamber thermal break, significantly improving insulation. With suitable glazing and thermal foam upgrades, we can achieve U-values as low as 1.4 W/m²K with double glazing, easily meeting Document L building regulations for energy efficiency.

Weather & Air Resistance

Tested to BS 6375 Part 1: 2009, achieving:

  • Air permeability: Class 4 (600Pa)
  • Water tightness: Class E (750Pa)
  • Wind resistance: Class 4 (1800Pa)

Combined with EPDM gaskets and weather brushes, this ensures long-term protection against the elements in both domestic and commercial settings.

Enhanced Security as Standard

Security is built in from the ground up. Our systems are PAS 24:2016 certified for enhanced performance and include:

  • Multi-point locking on main sashes
  • Shoot-bolt locks on floating mullions
  • Optional domestic-style ‘lift-up’ handles and adjustable, one-piece keeps

This makes Fenea aluminium bifolds suitable for residential projects with strict security requirements and commercial spaces needing controlled access.

Wide Range of Configurations

Whether you’re designing a panoramic home extension or a café frontage, we offer flexible configurations:

  • Panels can fold inward or outward
  • Openings can be placed centrally (French door style) or to one side
  • Options for low thresholds (for step-free access) or rebated thresholds (for improved weatherproofing)

Each sash can span up to 1200mm wide and 2500mm high, with a max weight of 100kg, enabling bold, uninterrupted openings up to 6.5m wide.

Marine-Grade Powder Coating

All doors are finished in marine-grade polyester powder coating, suitable for harsh UK coastal conditions. Choose from:

  • Standard and non-standard RAL colours
  • Dual colour options (different inside and outside colours)
  • Textured finishes
  • Woodgrain effect finishes for a traditional look with aluminium strength

Colour-matched accessories are also available for a seamless aesthetic.

Precision Engineering

Each door is fabricated with mitred corners for tight, accurate joins that boost both performance and visual appeal. Stainless steel rollers and robust hinges ensure effortless glide action and years of reliable operation even in high-traffic environments.

Performance Standards & Options

Double Glazed Bifold Doors*
Product Ref:
U ValuesGlass: 4/16/4 Ug = 1.0 w/m2K
Whole Window: 4/16/4 = 1.6 w/m2K
Frame Thickness / Width75 x 32mm
Sash Thickness / Width70 x 60mm
Sill Nosing Sizes Available85mm > 225mm
Secured By Design AvailableYes

*Triple glazing also available

Remember that Fenea can help ensure compliance with all aspects of your project specification:

  • Part L: If the frame or door type cannot achieve the required U-value of 1.4W/m2k with double glazing, we can supply triple glazing down to 0.8W/m2k.
  • PAS24 & Secured by Design: All our aluminium bifold doors can meet these standards as required.
  • Part Q compliance.
  • Acoustic glazing: We’ll ensure the glass specification meets your acoustic glazing report at the lowest cost.
  • Part F: We’ll help you choose the best option aesthetically and to meet any planning requirements.