Sheerline Prestige Bi-folding Doors

Sheerline Prestige bi-fold doors are designed to create a smooth transition between your garden and interior space, effectively softening boundaries and enhancing the feeling of openness in your home. Crafted from slim, elegant aluminium, these doors allow natural light to flood your interiors, even when closed.

No matter the style or configuration you choose, Prestige bi-fold doors will ensure your living space remains bright and welcoming.

Not all bi-fold doors are created equal. Sheerline Prestige is engineered to outperform traditional aluminium systems in three key areas:

1. Slimmer Sightlines, More Glass

With a clean 110mm sash-to-frame sightline (138mm between sashes), Prestige maximises natural light while keeping frames elegant and understated. The result? A brighter room and a more refined finish.

2. Impressive Thermal Performance

Thanks to Sheerline’s multi-chamber aluminium design, these doors achieve:

• 1.4 W/m²K with double glazing
• 1.0 W/m²K with triple glazing

That means better heat retention, improved comfort, and lower energy bills.

3. Serious Security

Security comes as standard, not as an upgrade.

• PAS 24 accredited
• 5-point locking system
• Double deadbolts
• Internal glazing beads

You get peace of mind without compromising style.

Outstanding security built into every bi-fold

With 5-point locking and double deadbolts, every element of the Prestige bi-fold has been designed to keep you and your home secure. We also use full length security interlocks on appropriate styles to protect your home from would-be intruders. These bind the sashes tightly together if attacked.

Bespoke Winkhaus ‘Thunderbolt’ locking

French passive doors include an integral finger pull lock, eliminating the need for a second handle – continuing the clean, minimal Sheerline aesthetic. An innovative mishandling device also ensures doors are locked in the correct order.