Our Factory Liniar profile windows are fitted with high security multi-point locks as standard, and are independently tested to the requirements of PAS:24 and Secured by Design.

Our Factory products are put through exhaustive testing processes to ensure they are robust, durable and built to last.

Our Factory PVC windows and doors are made from lead-free, energy efficient and recyclable PVCu, making it a sustainable, modern choice.

Our Factory products won’t rot, rust, nor require painting – just an occasional clean with warm soapy water.


Windows and Doors

One of the newest and most technically advanced window systems on the market, Liniar was designed from scratch to take advantage of the very latest developments in PVC window profile engineering technology.

Choosing modern manufacturing techniques with a highly skilled workforce our quality and attention to detail make Our Factory window and doors the leading choice.

The multi-chambered design of the Liniar profile, or window frame, makes it far more energy efficient than other uPVC window profile suppliers. Made from lead-free, fully recyclable PVC, Liniar windows and door profiles offer many benefits for installers, contractors and homeowners, designed as they were with the wisdom of over 500 years of industry experience.

The Liniar range offers a selection of different window styles and designs, together with fully matching products including residential and composite doors, bi-folding doors, patio doors, French doors and conservatories.

All products are available in a wide choice of colours and foils to give homes, offices and commercial developments a fully bespoke appearance.

Our Factory

Made In Britain

Our Factory are Liniar Approved

Our Factory

Products made from lead-free, fully recyclable uPVC, Liniar windows and door profile offers many benefits for fabricators, installers and homeowners

Weather testing

All windows are tested to the latest British/EU standards for air, water gusting performances via BSI and BBA

Energy efficiency

Energy efficiency. All casement products can be supplied in any of the above specifications to achieve the necessary WER (window energy rating) A, B and C


We offer the Yale rapide, or Espag locks with Egress fire safety hinges as standard.


All of Our Factory Ltd windows and doors are custom made to size. Our customers benefit from a wide range of styles and choice with advanced design features built in as standard.

Our windows are manufactured to the highest standard and at the forefront of product development, innovation and hardware design. All components have been sought from leading global manufacturers offering our customers longevity, peace of mind and Made in Britain accredited.

Best acoustic and thermal performance across the widest temperature range.
Low operating forces reduces wear and tear, and gives ease of operation.
Retains shape year after year.
99% memory recovery.
Leaves no rigid sprue after welding.

Ventilation: Approved Document F

Building regulation in England for the ventilation requirements to maintain air quality.


Read the updated ‘Ventilation: Approved Document F’ details directly on the GOV.UK website here.

Our Factory windows are energy efficient

Our Factory Limited Gold CMS Licence

Our Factory Limited Silver CMS Licence

Our Factory Limited Bronze CMS Licence



Panel Layouts

All of our windows are made to measure, with so many bespoke panel layout options to choose from.

window layouts

window layouts