»»‘ Alumina by Liniar’ has been designed and developed by the same team of experts as the Liniar window system – and offers superb thermal performance and a host of other features.

Liniar launched a bespoke PVCu bi-folding door system to the market in 2011, then broke new ground with its ModLok™ bi-fold in 2014. The thermally efficient PVCu bi-fold has become a market leader, combining standard PVCu fabrication techniques with an industry first patented exo-skeleton, giving the bi-fold doors the technology and strength for bigger and wider door apertures.

Now, in response to customer demand, Liniar has created a 100 % aluminium bi-fold system designed for heavy duty use, spanning even larger openings and ideal for commercial projects- Alumina by Liniar.

Group CEO Roger Hartshorn explained why a PVCu systems

company took the unusual step in designing a fully aluminium bi-fold system:“ During conversations with customers it became clear that there’ s a need for aluminium bi-folds for larger and more heavy-duty applications – but there was nothing on the market that exactly matched a window system.

“ This got us thinking – what if there was a way to create a true aluminium door with the same sculptured profile as our window system? What if we could make it the most thermally efficient aluminium bi-fold? And what if we could foil the exterior, so it matched perfectly with PVCu windows? Finally, we wanted our customers to be able to manufacture it using traditional techniques and machinery, so that was an important criteria.”

With these objectives in mind, the Liniar design team led by Chris Armes embarked on the project to create the first thermally efficient aluminium bi-fold

to match a PVCu window system.

Feedback at the FIT Show was‘ superb,’ with visitors flocking to be amongst the first to offer Alumina to their customers when it officially launches in July.

Able to span 1.2 metres wide per sash and 2.5 metres high, Alumina by Liniar can be manufactured using standard aluminium machinery by fabricators who are equipped for it.

For customers who aren’ t in a position to manufacture it themselves, or would prefer to buy it prefabricated, Liniar has set up its own supply chain.

Aluminium doors are considered sleek, strong, smooth and beautiful, yet can often feel cold – but Alumina by Liniar has an optional‘ warm touch’ foiled exterior.

It can be offered in just about any powder-coated colour. Consumers can choose a beautiful wood grain or flat foiled finish for their doors – perfectly matching their Liniar PVCu

windows for a more energy efficient home.

Liniar says Alumina is the only fully sculptured( curved) aluminium bi-fold door on the market.

It has been designed from scratch with a combined lock and thermal insert. This lock unites the ultimate specification of security with a high strength engineering polymer lock body – so the lock itself acts as a thermal break.

With 28mm double glazed and 36mm or 40mm triple glazed options available, Alumina offers‘ true’ U-values as low as 1.2W / m1.2W / m2K.

Alumina ensures the highest security for homeowners with a suite of hardware following the same principles as the Liniar ModLok™ bi-fold system, including multiple

bi-directional locking points, shootbolts that secure firmly into the track, built-in antilift features and anti-bump cylinders.

Alumina obtained PAS 24 accreditation and has been awarded Secured by Design status at the first attempt.

All Alumina bi-folding doors are available with three threshold options. The rebated aluminium frame runs seamlessly around to form a weathertight threshold, and the doors are supplied with this as standard. Liniar’ s optional aluminium low threshold requires no trench excavation to install, and is just 23.5mm at its highest point. When Liniar’ s low

threshold tray is added, the whole entrance becomes Part M compliant.

The bi-folds move smoothly and effortlessly along a sleek stainless steel track and are‘ bottom rolling’, not top-hung – meaning no extra stresses are placed on the building’ s lintel.

PVCu beads are offered with Alumina, making the door panes easy to glaze.

Other details include folding keys, ergonomic handles, hidden fixings for hinges and discreet magnets.

For more information go to http:// alumina. liniar. co. uk or email sales @ liniar. co. uk