Which brand of flush casement window should I choose?

4 min read Windows

What are the benefits of a flush casement window?

Modern uPVC flush casement windows (also known as flush sash windows) are one of the most reliable styles for UK homeowners, offering an aesthetic that is seamless and contemporary, gaining its name from its noticeably ‘flush’ appearance that has remained suitable for nearly every type of household for decades. This flush window style mimics the contemporary style of aluminium windows but will all the thermal performance and energy efficiency advantages of uPVC windows. 

However, there are still plenty of brands that offer slightly different design opportunities within the flush casement window remit. Wondering which brand of flush casement window you should choose? We’re here to help with that.  

Two flush casement window brands that deliver good looks and performance

We at Sheerwater Glass are installers for both Liniar and Deceuninck double glazing to help give homeowners throughout Surrey, Guildford and elsewhere options within the durable design of a much-beloved window style. Both the Liniar and Deceuninck brands offer the classic flush look with slight differences in terms of performance, weather resistance, security options and so on. Either one is a great choice but here’s what you need to know.  

evolution flush windows

Liniar Flush Casement windows are longstanding and reliable  

Liniar is one of the leading uPVC window systems available in the UK, delivering the classical look of pre-1932 traditional timber windows in a material which is better geared to meet the needs of the modern homeowner. Mechanical joints work in tandem with the flush casement window to result in an authentic heritage appearance, looking sleek and contemporary all at the same time depending on your chosen colour.   

Liniar Flush Casement windows respect the past but embrace the future simultaneously, delivering A+ rated energy performance to keep your home warm for less. The main difference between Liniar’s system and other uPVC brands out there is Liniar’s patented bubble gasket system, which achieves a continuous seal all the way around to eliminate draughts for good and provide optimal resistance against water.  

Other key features of Liniar Flush Casement windows:  

  • Ultra slim sightlines  
  • Patented bubble gasket removes draughts  
  • A+ rated energy performance  
  • Mechanically jointed appearance  
  • Traditional handle options  
  • Enhanced security PAS 24 Approved  
  • Low Maintenance uPVC frames  
  • Available in a range of colours including Chartwell Green, Cream, and woodgrain  
white mills slimline window

Deceuninck Heritage sash casement windows are the full package  

Offering invisible joints, clean sight lines and that classic flat finish when closed, Deceuninck Heritage sash casement windows are a leading uPVC window system that delivers where it counts: performance and appearance. From White to Woodgrain there’s a full range of colour finishes to choose from, too, helping your Deceuninck Heritage sash casement windows fit in perfectly with the established look of your home.  

Deceuninck’s system is low-maintenance, attractive and offers U-values as low as 1.4 W/m2K to guarantee top-tier energy performance all year round. The latter ensures that any generated warmth will stay in your home for longer, reducing the cost of energy bills and ensuring you switch on the heating far less.  

Other key features of Deceuninck Heritage sash casement windows:  

  • Sleek slimline frames  
  • Dummy peg stay option  
  • Mechanical or welded transom/mullion joints  
  • Exquisite Georgian bar option  
  • Traditional ironmongery options  
  • Enhanced security PAS 24 Approved  
  • Low Maintenance uPVC frames  
  • Available in a range of hand-picked Heritage woodgrain finishes  
deceuninck window open closeup

Flush casement windows brands to suit every need from Sheerwater  

If you want to treat your home to a look that is both modern and traditional all wrapped up into one, the perfectly flush uPVC style offered by both Liniar and Deceuninck is an easy option to recommend. To discuss their difference and benefits further, get in contact with a member of our team today – we’ll provide a free quote and get back to you promptly.

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“Used the Sheerwater team to replace a couple of Velux windows in our converted loft. Really first class experience, great communication throughout, super professional and the installation was the best we've had in terms of fit and finish and (lack of) damage to surrounding areas. Will use again!”Tim Loake
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Sheerwater Glass provides window installation and repairs throughout Surrey and the surrounding areas of our Woking showroom. If you’re interested in our services, we encourage you to check if we serve customers in your area by simply typing in your postcode.

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