Upvc Bi-Folding Doors

Technically advanced The Liniar bi-fold was designed completely from scratch in 2010, making it far more technically advanced than other doors on the market - built for todays exacting challenges.

Unrivalled benefits The Liniar ModLok bi-fold is the first to combine the structural benefits of an aluminium bi-fold with the thermal and colour benefits of PVCu. Available in configurations from 2 to 7 panes, opening in or out, it matches perfectly with the rest of the Liniar range of windows, doors and roofs.

Family friendly Liniars low threshold is just 24mm high, offering easy access for family living. The low threshold can be combined with an optional double ramp for Part M compliance and is available with a half option for those wanting to put flooring up to the track for a seamless finish.

Strong and secure With patented ModLok, a combined aluminium reinforcement and multi-point locking system providing additional strength and an unrivalled appearance. Featuring 3 opposing hooks and 2 shootbolts on the master door, together with 2 anti-lift shootbolts on each slave door, the Liniar ModLok bi-fold has built in anti-lift features and anti-bump cylinders, with optional anti-snap cylinders. Each doors slim hinges are tamper-proof with fixings hidden inside. Due to its incredible reinforcement, the Liniar ModLok bi-fold is ideal for heavy duty applications including restaurants, cafes and showrooms.

Click here for bi-folding door brochure.

Thermally efficient The Energy Plus multi-chambered outer frame and sash offers maximum thermal efficiency. The Liniar ModLok bi-fold is also triple-glazing ready, and can achieve a U-value of 1.0 W/m2. It even achieves a fantastic U-value of 1.3W/m2 with economical double glazed units.

Crammed with innovative features A neat master/slave lock means the wrong door cannot be opened first, avoiding sprained locks, and folding keys avoid potential issues when keys are left in locks. The unique built-in keep within lock faceplate gives the ModLok bi-fold an unparalleled appearance with no protruding hooks.



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Environmental Policy

It is policy of Alternative Windows to ensure the management of our operational activities in such a manner as to reduce our environmental impact to an acceptable minimum, taking into consideration issues of practicality and reasonable implementation costs.
This will be achieved by setting clear and realistic on going environmental objectives and monitoring our progress and results against these defined objectives.

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