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.
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.
Outstanding Thermal Performance
Our aluminium bifolds can achieve U-values as low as 1.4 W/m²K, 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.
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.
✅ 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.
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.
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.
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.
Tested to BS 6375 Part 1: 2009, achieving:
Combined with EPDM gaskets and weather brushes, this ensures long-term protection against the elements in both domestic and commercial settings.
Security is built in from the ground up. Our systems are PAS 24:2016 certified for enhanced performance and include:
This makes Fenea aluminium bifolds suitable for residential projects with strict security requirements and commercial spaces needing controlled access.
Whether you’re designing a panoramic home extension or a café frontage, we offer flexible configurations:
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.
All doors are finished in marine-grade polyester powder coating, suitable for harsh UK coastal conditions. Choose from:
Colour-matched accessories are also available for a seamless aesthetic.
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.
Double Glazed Bifold Doors* | |
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Product Ref: | – |
U Values | Glass: 4/16/4 Ug = 1.0 w/m2K Whole Window: 4/16/4 = 1.6 w/m2K |
Frame Thickness / Width | 75 x 32mm |
Sash Thickness / Width | 70 x 60mm |
Sill Nosing Sizes Available | 85mm > 225mm |
Secured By Design Available | Yes |
*Triple glazing also available
Remember that Fenea can help ensure compliance with all aspects of your project specification:
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