Our Smoothfold Bi-folding Doors range is crafted with precision in the UK, offering a choice of uPVC and Aluminium materials to suit your home’s needs.

Smoothfold Bi-folding Doors
10 Year Insurance Backed Guarantee
Over 30 years' industry experience
Bi-Fold Doors
WarmCore aluminium folding sliding doors were created out of a desire to combine the desirability and durability of aluminium with unparalleled insulation. The orange thermal core – hidden away in the finished doors – is key to why WarmCore doors are 25% more thermally efficient than traditional aluminium systems.
Strong and secure, WarmCore doors come with class leading security built in, backed by a comprehensive 10-year product guarantee, reinforced by the ERA Five Star security guarantee. Inwards or outwards opening doors up to 6m wide, with as many as 7 opening sashes glide along customer designed tracks. Available in four colour options ( white, cream, black and grey) style and configuration options help you choose the perfect warm, secure and beautiful WarmCore door for your home.
Ensuring a cosy atmosphere indoors
Dive into the superior craftsmanship of our Smoothfold Bi-folding doors in Chesterfield, which harmoniously combine the robustness and appeal of aluminium with outstanding thermal insulation. The innovative thermal break technology at the heart of these doors significantly improves thermal performance, making them more efficient than standard aluminium bi-folding systems.
Designed for strength and safety, Smoothfold doors feature top-tier security measures, supported by a robust 10-year product warranty and further bolstered by a comprehensive security guarantee. These doors can be configured to open inwards or outwards, extending up to 6 metres in width and accommodating up to 7 leaf sections that move smoothly on specially engineered tracks. With a palette of four elegant colours (white, cream, black, and grey) and various style and configuration choices, you can find the ideal Smoothfold door to enhance the warmth, security, and aesthetics of your residence.
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Customise your doors to suit you
- Material: Aluminium Polyamide
- Dual Colour: Yes
- Thermally Broken: Yes
- NBS Available: Yes
- U Value: U Value 1.5W/m²K using 1.0 W/m²K centre pane
- Document L Compliant: Yes
- BS 6375-1:2009: Yes
- Security PAS24:2016
- Fixed Max Width (mm): 1200mm (per sash)
- Fixed Max Height (mm): 2500mm (per sash)
- Fixed Max Weight (kg): 100kg (per sash)
- Slide Folding Door Max Width (mm): 1200mm (per sash)
- Slide Folding Door Max Height (mm): 2500mm (per sash)
- Slide Folding Door Max Weight (kg): 100kg
- Glazing (mm): 24mm, 28mm, 32mm, 34mm, 36mm double or triple glazed units
- Frame Depth (mm): 70mm
- Typical Sightlines (mm): 122mm