Flush Sash Windows

Provides the appearance of timber without the required maintenance
'A' energy rating
Wide range of colours and styles to suit all properties
10-year, insurance-backed guarantee
Manufactured to the highest security standards
Complete weatherproofing against all the elements

Our Flush Sash Windows Come in a Range of Styles and Colours to Suit All Homes

Whether your home is a traditional country house or modern city flat, our uPVC windows bring elegance and quality into every living area. Designed to match the appearance of traditional timber, the flush sash has all of the style with none of the setbacks. Using equal sightlines, the window frames appear the same width, giving your property an understated symmetrical perfection. With the option for mechanical joints, you’re left with a window that’s both simple and flawless in its design. And each one is made to your exact specifications.

Available in a variety of colours and glazing options to suit your specific needs, you can enjoy the very best in performance and style with our top-of-the-line window systems. Whether you prefer a classic look with timber-style joints and cottage bars or a more contemporary aesthetic with equal sightlines and modern handles, there’s no doubt our windows can enhance the beauty of your home.

Our flush sash uPVC windows are ideal for period properties, as they replicate the appearance of timber without the maintenance. They may be modern, but they’re sure to fit any style. What’s more, they’re energy efficient, so they’ll help keep your home warm in winter and cool in summer! Plus, we offer a 10-year guarantee (backed by the Plastics Window Federation) for complete peace of mind.

Covering the Midlands and Northern Ireland, with headquarters in Derby and offices in Belfast and Leicester, we are ideally situated for all of your home improvements needs. We pride ourselves on providing a personalised, hands-on service, which is why there isn’t an option to order your flush sash windows online.

If you’re interested, the first step is to get in touch and request a free quote. We’ll then contact you to arrange a design consultation at your home to discuss your requirements and talk through the options for materials, glazing options, window styles and extras.

Based on the outcome of the visit, we’ll send you a tailored quote detailing the exact cost. If you’re happy with it, let us know and we’ll book your window installation at a time that suits you. Sound good? Request a free, no-obligation quote today!

Request a quote

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Benefits of Emerald Flush Sash

Security

Safety and security are of paramount importance to us, and that's why our windows conform to all British safety standards. We’re part of the Secured By Design initiative, and all of our windows have unique 14-point locking systems.

Energy efficient

With an 'A' energy rating, our windows help to improve the overall efficiency of your home by reducing the amount of energy you use. They’re designed to keep your home warmer in the winter and cooler in summer.

Noise reduction

Our uPVC double-glazed windows ensure a comfortable living environment by improving sound insulation. Keep unwanted noise where it belongs—outside!—and enjoy peace and quiet in your home at all times.

Weatherproof

Our windows are perfect if you’ve got an older property as they’ll match the appearance of timber. The high-quality materials mean they’ll also stand up to whatever the British weather throws at them, without rotting, rusting or warping!

Our Locations: Derby, Leicester & Belfast

Our reputation in Derby and the surrounding areas makes us a smart choice if you’re looking for new flush sash windows.

Windows in Derby

Our experienced Leicester team are on hand to cover all your flush sash window needs!

Windows in Leicester

From start to finish, our Belfast experts will get your new flush sash window installation spot on.

Windows in Belfast

Customer Reviews

Very pleased with my new windows and doors. They look great! William and George did a brilliant job fitting them. Very clean and tidy workers . A great experience from start to finish. Will recommend this company to others.

Grace Grattan

Emerald recently completed a two day job for us. The quality of the windows & door fitted are first rate. Their communications were very good prior to the work, & they rang ahead on the day they were due to start to confirm what was due to be carried out.

They made the procedure from start to finish a smooth one. We would fully recommend them for future use.

Ian Longdon

We had our windows and doors replaced with Emerald Home Improvements. Absolutely first rate service, they worked all day without stopping and made a first class job. I am very happy with the company and the work. This is a very efficient, well run company and I highly recommend them. I have since ordered guttering and fascias. Thank you to everyone at Emerald and especially to Steve and Scott.

Jill Burkinshaw

Read these reviews and more on our Derby page, our Northern Ireland page and our page.

Our Accreditations

When you buy an Emerald product you can rest assured that you are in the safest of hands. We are a member of FENSA, Trust Mark, The Guild of Master Craftsmen, the PWF (Plastics Window Federation) and many more. Being part of these initiatives ensures that Emerald operate to the strictest industry standards and that no corners are cut.