Sheerline Prestige Bi-Fold Doors

Bring the outside in with our Sheerline Prestige bi-folds, creating an increased sense of space and seamless transition between your garden and the inside of your home. 

Combining the refined, architectural look of aluminium and the latest thermal and security technology, leaving you with beautifully balanced bi-folding doors. 

Thermlock Technology

Our Prestige Bi-Folds feature a Thermlock multi-chamber thermal design. These closed-cell, insulating chambers act as thermal breaks. Working in conjunction with high-performance glazing to create a class-leading thermal performance.

Prestige bi-folds achieve U-Values as low as 1.4 (with double glazing) and 1.0 (with triple glazing). The lower the U-value is, the better insulated the window/door is. 

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Ultion Folding Key

Our Prestige bi-folds come with an Ultion 1* Plus 2* lock and handle combination and a unique folding Ultion key. This protects the frames from damage in the fold position.

With the two-star handle, the latest product from Brisant Secure, its unique seamless curves prevent burglars from ripping it from the door. The molybdenum cylinder shield protects against drilling and lock snapping. It’s also designed to last while keeping its looks.

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Technical Details

  • Slim 138mm sash to sash sightlines
  • Single and French door options
  • Dual colour and special finishes are available
  • 12 colours from stock & bespoke RAL colour options
  • U-values as low as 1.0 W/m2K
  • Max sash width 1.2m. Max sash weight 120kg
  • Glazing: up to 44mm triple glazing (36mm on stepped sashes)
  • Patented corner joints give superior aesthetics & reduce misaligned corners
  • Four threshold options – all fully weather-sealed
  • Outstanding security features built into every bi-fold
  • Minimum leaf width 700mm
  • Maximum leaf width 1200mm

Colour Options

Prestige bi-folds are available in nine powder colours, with an option of a dual colour for each. Or choose from further three anodised finishes for the ultimate durable and stylish finish.

Can’t find the colour that you’re wanting? We can foil wrap your bi-folds to match any RAL colour.

Traditional Colours

Character Premium Colours

Paragon Anodised Finish