Itchen Glass & Glazing
Bi-Fold Doors
Folds fully back to open living spaces to the garden, built on Sheerline’s Prestige and Index bi-folding systems.
- Full-width opening
- Slim aluminium frames
- Thermally efficient
Bi-Fold Doors in Southampton & Hampshire
Bi-fold doors concertina back to one or both sides, opening the entire width of an opening for a genuinely seamless connection between an indoor living space and the garden. They’re one of the most popular additions to kitchen and living room extensions across Southampton and Hampshire.
Our bi-fold doors are built on Sheerline’s Prestige aluminium system, with independently verified thermal performance and slim sightlines that maximise the view when closed.
What you get with Itchen
Full-Width Opening
Concertinas fully back for an uninterrupted indoor-outdoor connection.
Slim Aluminium Frames
Maximises glass and view even when the doors are closed.
Smooth, Reliable Running
Quality hardware engineered for years of everyday use.
Thermally Efficient
Sheerline’s Thermlock® core keeps rooms warm, not just in summer.
Sheerline Aluminium Systems
Sheerline Aluminium Systems
Our aluminium ranges are built on Sheerline systems, winner of the King’s Award for Innovation 2025 for its aluminium window and door range.
- 01 Thermlock® multi-chamber thermal core, independently U-value tested for genuine thermal performance.
- 02 Slim, architectural aluminium frames available in a full RAL colour range, including dual-colour finishes.
- 03 Security-tested ranges, with PAS 24 and optional Secured by Design upgrades available.
- 04 Backed by a 25-year manufacturer guarantee.
Bi-Fold Door Specification
Built on Sheerline’s Prestige bi-folding system, with independently published thermal and size figures.
- U-Value
- From 1.4 W/m²K double glazed, or 1.0 W/m²K triple glazed.
- Sightlines
- A slim 138mm sash-to-sash sightline for maximum glass area.
- Maximum Size
- Up to 2.6m high and 6.5m wide, in configurations of up to 7 panels per side.
- Security
- 5-point locking with double deadbolts as standard.
Figures are for Sheerline’s Prestige bi-fold system as published at sheerline.com .
Bi-Fold Door Colours and Finishes
Bespoke RAL colours and dual-colour finishes are also available, so get in touch with our team for the full range, or see Sheerline’s complete colour and style options at sheerline.com/product/colour-and-style-options .
Interested in Bi-Fold Doors?
Request your free, no-obligation quote today.