Flush casement windows

A clean, elegant and sleek uPVC window frame.

What is a flush casement window?

When closed the sleek profile of a flush sash casement window sits flat within the frame. Whereas a standard casement window sits slightly proud and has a lip over the frame.

White flush casement window frame
White casement window frame

The benefits of our flush casement windows

  • Timber joint icon

    Timeless timber aesthetics

    The sleek profile sits flush into the frame giving the appearance of a traditional timber window.

  • Slim sightlines icon

    Ultra slim sightlines

    Our A+ rated energy efficient uPVC frames allow maximum natural light into your home.

  • 2 timber frames icon

    Choice of two frame styles

    Our flush sash casement windows are available in 70mm or double-rebated 80mm frames.

  • Eco friendly triple glazing icon

    Double or triple glazing

    Our flush casement windows are available in double or triple glazing - delivering exceptional energy efficiency and noise insulation.

  • Colours & Woodgrains

    Contemporary and traditional colours or wood effect foil finishes. We have an extensive range for you to choose from.

  • Shield outlines

    Enhanced security

    The high-security features of our flush sash casement window frames offer an extra layer of protection for your home and family.

Our flush casement windows are available in two styles

uPVC flush casement window

Perfect for conservation, heritage and listed buildings

At Yorkshire Windows, we understand that many property owners require the charm of a traditional timber window frame due to planning or environmental restrictions. However, we also recognise the challenges that come with timber frames - they can be expensive, require regular maintenance, and are difficult to replace.

Our flush casement windows have been thoughtfully designed to replicate the classic look of traditional timber frames while offering a range of benefits that cater to modern living.

The aesthetics of wood, with modern advantages

Our uPVC flush sash casement windows can be expertly foiled to look like authentic timber or provide a sleek, contemporary finish, all while offering the benefits of safe, secure, efficient, and great-looking windows and doors.

You get the best of both worlds - the timeless beauty of timber and the practicality of advanced window technology.

Wood effect flush casement window frame closeup
uPVC flush kitchen casement windows

Superior energy efficiency and cost savings

Our flush sash windows are capable of achieving A+ WER (Windows Energy Ratings) with cost effective double glazing – and a U-value as low as 0.8 W/m²K (with triple glazing).

These upgrades offer significant thermal benefits, making them the best alternative to traditional timber windows. Not only do you get the aesthetics you desire, but you also enjoy enhanced insulation and potential cost savings on energy bills.

Contemporary & traditional flush sash window frame colours

All of our uPVC window frames are available in a wide variety of colours including: White, Rosewood, Cream, Irish Oak, Chartwell Green, Agate Grey and classic Ebony Black.

Dual colours

Dual colours are available, with the option of both sides of your window frames coloured, or a clean white interior frame.

Standard window frame colours

  • White window frame swatch
  • Cream window frame swatch
  • Irish oak window frame swatch
    Irish oak
  • Golden oak window frame swatch
    Golden oak
  • Rosewood window frame swatch
  • Anthracite grey window frame swatch
    Anthracite grey
  • Ebony black window frame swatch
    Ebony black

Bespoke window frame colours

  • Oregon window frame swatch
  • ANteak window frame swatch
  • Agate grey window frame swatch
    Agate grey
  • Silver grey window frame swatch
    Silver grey
  • Basalt grey window frame swatch
    Basalt grey
  • Grey window frame swatch
  • Blue window frame swatch
  • Dark green window frame swatch
    Dark green
  • Dark red window frame swatch
    Dark red

Don't see your perfect colour?

Our window frames are also available in the full Renolit colour range.

Renolit swatch book

Speak to one of our design team to discuss colour options and to view samples.

Please note: Bespoke colours are subject to availability and price on application.

Yorkshire Windows design expert

Here to help you choose

We offer a visualisation service, so that you get to see which colour will suit your property best.

Arrange your free appointment

Carrying a uPVC window
White uPVC flush windows
Anthracite grey flush casement windows

Trusted in-house installation team

Unlike many other companies that rely on subcontractors, we have a dedicated team of experienced window installers who have been with us for many years. Their expertise ensures flawless installations and consistent quality for every project.

10 Year Guarantee

10 year warranty as standard with extendable warranties available on request.

We take pride in being among the first companies of our type to provide our customers with the manufacturer's guarantee, supported by Corgi.

This unique offering ensures that even in the rare event of any unforeseen circumstances affecting our business, your product warranty remains intact, providing you with absolute peace of mind.

Useful information

How much do flush sash windows cost?

For a basic, standard-sized uPVC flush sash window with double glazing, you can expect to pay roughly between £400 and £700.

Very pleased with service provided. Everything went smooth and quick and timescale was exactly as stated. I was given all the answers I needed from start to finish.

M Cope

Our promise

  • A fair price, first time

    We don’t believe that you should have to ‘haggle’ when you have invited us into your home.

  • No seasonal sales

    You can be confident if you buy from us today you won't see our price cheaper the following week.

  • No pressure

    We will leave your quotation with you, so you can think it over, in your own time.