rosette icon

10 Year Guarantee

Available on all products

energy icon

Energy Saving Products

A+ rated window & doors

price icon

Competitive Prices

Value for money

team icon

Qualified Team

Strict industry standards

brown casement window
white residence 9 window

Refreshing casement windows for properties in Aylesbury, Buckingham, High Wycombe & beyond

Available with sculptured (rounded) or chamfered (right-angled) frames, each casement window is designed to meet your specific project requirements. From traditionally-styled casement windows complete with an authentic woodgrain effect to modern triple glazed black casement windows, we can provide seasoned advice on the best style, finish, and glazing that's right for you.

Using our innovative online quote portal, getting a tailored casement window quote has never been easier!

Looking for slimmer casement windows? Then take a peek at our slender aluminium window frames.

Get in touch
liniar casement windows

Energy saving casement windows in Buckinghamshire, Hertfordshire & Oxfordshire

Quality property improvements never compromise on thermal efficiency - after all, improving your building's energy performance has the power to add considerable value to your property. Combined with quality double glazing, new double glazed casement windows could reduce your energy bills by £110 each year too.

Achieving some of the best Window Energy Ratings around, casement windows are also one of the most energy efficient window styles, thanks to tight seals positioned all around the edge. Developed using the latest in multi-chambered profile technology, our uPVC casements trap pockets of warm air inside to stop the cold from getting in, keeping you cosy and warm all year round.

Get a quote
  • Colour Options
  • Glass Options
  • Accessories
  • Security
  • Downloads
  • Colour Options

    Whether your improvement plans require bright white casement windows, contemporary black casement windows, convincing timber-look casement windows, or something a bit more vibrant to match your personality, finding the best fit for your project is incredibly straightforward with a Double Glazing Direct window installation. With over 150 RAL shades to choose from, as well as diverse dual-colour options, a world of colour awaits! Our vast array of colours are perfect for matching new installations with commercial branding too.

    Grey

    Grey

    Black

    Black

    Eclectic Grey

    Eclectic Grey

    Corse Lawn

    Corse Lawn

    Rosewood

    Rosewood

    Golden Oak

    Golden Oak

    Irish Oak

    Irish Oak

    Cream

    Cream

    Chartwell Green

    Chartwell Green

    White

    White

    Silvered Oak

    Silvered Oak

    Titanium Grey

    Titanium Grey

    Storm Grey

    Storm Grey

    Steel Grey

    Steel Grey

    Anthracite Grey

    Anthracite Grey

    Glass Options

    Our energy efficient casement windows are capable of achieving A+12 Window Energy Ratings with modern double glazing & U-values as low as 0.8 with advanced triple glazing. If your room suffers from overheating in summer or is too cold to use in winter, we can install temperature-moderating Low-E glass. We also have an attractive range of decorative glazing, perfect for intricate heritage projects, adding privacy, and one-of-a-kind installations.

    Chantilly

    Chantilly

    Charcoal

    Charcoal

    Contora

    Contora

    Digital

    Digital

    Everglade

    Everglade

    Florielle

    Florielle

    Mayflower

    Mayflower

    Minster

    Minster

    Oak

    Oak

    Pelerine

    Pelerine

    Reeded

    Reeded

    Taffeta

    Taffeta

    Tribal

    Tribal

    Warwick

    Warwick

    Cassini

    Cassini

    Accessories

    From chrome inline locking window handles to exquisite Monkey Tail handles and teardrop dummy window stay bars that hark back to a simpler time - as well as heritage-inspired Georgian bar, Astragal bar, and mock sash horn detailing options - we're confident we have the perfect finishing touch for your new casement windows to truly make them your own.

    monkey tail handle

    Security

    As well as the option to add an extra layer of protection with advanced triple glazing and high quality window locks as standard, all Liniar window products undergo extensive testing and checks. This means they can achieve the sought-after PAS 24: 2012 Enhanced Security Performance status, for peace of mind they can resist physical attacks by opportunist burglars.

    Learn more about our window and door security features.

    close up window

    Downloads

    Get an online quote:

    Visit our double glazing showroom in Aylesbury

    We understand that improving your home or business is a big step, and it can often be difficult to picture new windows, doors and more by just looking at an image on a screen.

    Our superb showroom in Aylesbury is the perfect place to get a real feel for the quality of our products and chat with a member of our team to learn more about transforming your property.

    Find out more

    Browse more window styles:

    Sign up to our newsletter

    Sign up for the latest advice and home improvement inspiration