»»‘ ALUMINA BY LINIAR ’ HAS been designed and developed by the same team of experts as the Liniar window system , also the first to launch a bespoke PVCu bi-folding door system to the market in 2011 .

The brand new bi-fold door was created in response to customer feedback , as a number of Liniar PVCu fabricators also wished to offer customers an aluminium alternative for larger apertures and commercial projects .

Having built a well-earned reputation in the PVCu fenestration sector , this is Liniar ’ s first departure into aluminium and the Alumina doors include some clever enhancements to set them apart from rival systems .

Made with standard machinery - Able to span 1.2 metres wide per sash and 2.5 metres high . Manufactured using standard aluminium machinery but includes added extra features for heavy duty use .

Warm touch exterior - Optional ‘ warm touch ’ foiled exterior .

Aluminium doors are considered sleek , strong , smooth and beautiful , yet can often feel

cold . Alumina can be offered in just about any powder-coated colour you can imagine but you can also choose a beautiful wood grain or flat foiled finish for your doors . This means if you have Liniar PVCu windows in your property , you can choose a perfectly matching aluminium bi-fold .

Fully sculptured to match - The only fully sculptured ( curved ) aluminium bi-fold door on the market – so not only will consumers be able to choose Alumina doors that match the exact colour of Liniar sculptured PVCu windows , they will also be the same shape .

Thermally efficient aluminium - The Liniar PVCu range is renowned for its energy efficiency and Alumina is no different . Pushing the boundaries of thermal performance , the team has created a system designed with tomorrow ’ s thermal performance requirements in mind .

Innovative thermal lock - Designed from scratch with a combined lock and thermal insert .

An area where heat can be lost from the home is through the

lock , as it ’ s difficult to maintain a thermal break in this area . This innovative lock unites the ultimate specification of security with a high strength engineering polymer lock body so the lock itself acts as a thermal break , boosting the door ’ s thermal performance .

Low U-values - With 28mm double glazed and 36mm or 40mm triple glazed options available , offering ‘ true ’ U-values as low as 1.0W / m ² k , thanks to the innovative thermal lock and 40mm triple glazed unit .

High security - 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 anti-lift features and anti-bump cylinders .

Threshold options - Available with three threshold options . The rebated aluminium frame runs seamlessly around to form a weathertight threshold , supplied as standard . Liniar ’ s optional aluminium low threshold requires no trench excavation to install , and is just 23.5mm at its highest point .

Bottom rolling - Alumina 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 .

Attention to detail - With innovative features including folding keys , ergonomic handles , hidden fixings for hinges and discreet magnets , the attention to detail is what makes an Alumina bi-folding door ‘ best in class ’.

www . alumina . liniar . co . uk