• Energy Plus range of six-chambered profiles as standard, achieving the highest possible BFRC Window Energy Ratings in the industry.
  • Yale shootbolt locking is fully compliant with Secured by Design specification and is covered by mechanical and security guarantees valid for 10 years after the date of installation.
  • Trojan 'Mega' egress hinge (designed for triple glazed side hung sashes) is also available, maintaining smooth and trouble free operation for the lifetime of the window.
  • Our casement windows carry the BS 7412 - PAS 24 Kitemark Licence 587165 for Windows Fabricators. This ensures maximum security and weatherability.
  • Our casement windows come 'Energy Saving Trust Recommended'.
  • Liniar hold a BBA accreditation for uPVC casement windows.
basalt colour option for Bay Windows from Middleton Glass
black colour option for Bay Windows from Middleton Glass
burgundy colour option for Bay Windows from Middleton Glass
cedarwood colour option for Bay Windows from Middleton Glass
chartwell green colour option for Bay Windows from Middleton Glass
Cream colour option for Bay Windows from Middleton Glass
Dark Blue colour option for Bay Windows from Middleton Glass
Dark Green colour option for Bay Windows from Middleton Glass
Dark Grey colour option for Bay Windows from Middleton Glass
Dark Red colour option for Bay Windows from Middleton Glass
Golden Oak colour option for Bay Windows from Middleton Glass
Grained Anthracite colour option for Bay Windows from Middleton Glass
Irish Oak colour option for Bay Windows from Middleton Glass
Light Grey colour option for Bay Windows from Middleton Glass
Mahogany colour option for Bay Windows from Middleton Glass
Rosewood colour option for Bay Windows from Middleton Glass
White colour option for Bay Windows from Middleton Glass
Arctic Glass option for Bay Windows from Middleton Glass
Autumn glass option for Bay Windows from Middleton Glass
Chantilly glass option for Bay Windows from Middleton Glass
Charcoal stick glass option for Bay Windows from Middleton Glass
Contora Glass option for Bay Windows from Middleton Glass
Cotswold glass option for Bay Windows from Middleton Glass
Digital glass option for Bay Windows from Middleton Glass
Everglade glass option for Bay Windows from Middleton Glass
Flemish glass option for Bay Windows from Middleton Glass
Florielle glass option for Bay Windows from Middleton Glass
Mayflower glass option for Bay Windows from Middleton Glass
Minster glass option for Bay Windows from Middleton Glass
Oak glass option for Bay Windows from Middleton Glass
Pelerine option for Bay Windows from Middleton Glass
Stippolyte glass option for Bay Windows from Middleton Glass
Sycamore glass option for Bay Windows from Middleton Glass
Taffeta glass option for Bay Windows from Middleton Glass
Warwick glass option for Bay Windows from Middleton Glass

Casement Windows


Our superior range of uPVC casement windows from Liniar offer the very highest levels of security and thermal performance.

Modern Appearance


With ultra slim sight lines, clean and modern aesthetics our stylish casement windows enhance the beauty of any property.

Yale High Security Locking


Our casement windows can be supplied with Yale high security shootbolt locking.

Multi-chambered Profiles


Liniar's revolutionary range of multi-chambered Energy Plus profiles offers superior heat retention and structural rigidity.

Energy Efficient


Our state of the art window system has been engineered to be capable of achieving WERs as high as A+12 and U-values as low as 1.0 W/(m2-K).

Environmentally Friendly


Liniar casement windows are totally lead free and 100% recyclable, thereby reducing environmental damage and meeting EU and UK legislation ahead of time.

10 Year Warranty


All Liniar casement windows are guaranteed not to warp, split or discolour for a minimum of 10 years from the date of installation.