Vertical Sliders

Vertical sliders are a traditional style of window, commonly found in older properties. When you want to capture the classic, stylish looks of Georgian sliding windows, without the associated risks of drafts and poor security, then UPVC vertical sliding windows are the perfect solution.

The sliding window system enables you to enjoy the sophisticated style of the Georgian era, with all the performance benefits of materials from the modern age. This elegant type of window is a popular replacement in period properties giving your home a sophisticated charm.

Modern technology and craftsmanship ensure precise fitting of vertical sliding windows with all the nostalgia of a bygone age, but with no necessary painting or other time consuming maintenance.

UPVC are extremely low maintenance and only need a quick wipe down to keep them looking good as new, the window sashes offer an inward opening feature making it safe for cleaning from the inside of your home.

UPVC Vertical Sliders windows offer a cheaper alternative to the original real timber windows which can be expensive.

To compliment the timber appearance though we incorporate the same stylish features found on an original timber sash window. In addition to this our UPVC windows are designed to be extremely safe and secure with the high performance locking system giving you peace of mind.

Our PVC windows are designed to be smooth and sleek with a slim profile creating a better appearance thus giving you a truly classic authentic looking Vertical slider.

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

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..