Casement Window

Casement windows offer total versatility and are still the most popular choice available today. The traditional British window style offers slim sight lines to allow in maximum light.

You can say goodbye to draughty windows as Liniar’s patented double-action bubble gasket, used in all our products, gives a continuous seal – even in the corners.

To add character you can add astrigal bars or Georgian bars. The Liniar range is available in a wide configuration of openings, colours, finishes, glass and hardware, which means you’ll be adding your own individual mark on your home’s appearance.

EnergyPlus – setting new standards

The EnergyPlus range offers even greater energy efficiency for your home. With a unique six-chamber PVCu profile that’s fully compatible with other ranges, EnergyPlus profiles can achieve an A+ rating without the need for expensive low-iron glass on the outer pane of glass or the need for costly thermal inserts.

What’s more, EnergyPlus profiles can achieve a Window Energy Rating of a staggering A+12*. The additional chambers designed into the PVCu profile when it’s manufactured prevent less cold air entering your home, and less warm air leaving it.

The cross section above shows how our multi-chambered profile prevents the transfer of heat from the inside to the outside..

Why pay to heat your home, then lose up to 20% through your windows and doors

Before: Heat is being lost through inefficient windows and door. After: Heat stays where it’s meant to be – inside your home


Five levels of privacy are available,

Decorative Glass Brochure

Safe and secure

Your home should be a safe haven – that’s why all Liniar products are designed, tested and certified to meet the highest standards of security. We also cyclic test our moving parts to make sure they won’t wear out, however much you use them


Developed by Liniar in conjunction with Yale, ModLok™ technology not only provides the strongest possible locking mechanism for your security but also enables the PVCu to be disposed of in the most environmentally friendly way possible at the end of its life.


This accreditation is part of the British Standards system and shows that every component used to make the product has been subjected to a series of tests, demonstrating enhanced security performance for your peace of mind.

Secured by Design

A police-backed initiative, Secured by Design status is awarded to products designedwith exceptional security features as their main priority. Liniar products that hold this certification are tested to meet the requirements of the Association of Chief Police Officers’.

ISO 9001:2008

ISO 9001:2008 sets out the criteria for a quality management system. The standard is based on a number of quality management principles including a strong customer focus, the motivation and implication of top management, the process approach and continual improvement. By using this standard, we are ensuring that our customers get consistent, good quality products and services.

BBA Approval

The BBA (the British Board of Agrément) is the UK’s major authority offering approval of construction products, systems and installers. The certificatesare recognised throughout the UK by architects, engineers and specifiers as an impartial and unbiased review on the performance of products. Liniar holds a certificate for the whole window system to further prove its quality..