Create your dream door today with our Door Designer. We offer strong and durable composite doors

Sliding Sash Windows for Modern or Period Homes

Customers looking to replace their current, conventional timber frames will love our selection of sliding sash windows. A fantastic and affordable timber style window from our supplier, Bison, a practical and versatile way  to update your windows. At D&I, we will offer you a home improvement project you can be proud of, whether you’re looking for an improved, energy efficient, heritage style joinery, or improved safety.

Do you live in a Harrogate conservation area? Or perhaps you want to upgrade to a house in an Edwardian style or even a vertical sliding fan window. Choose from a variety of colour and design options, and Bison collaborates with us to give you the traditional or contemporary home of your dreams.

Joinery Styles

Our sliding sash windows feature three different types of joinery: run through sash horns, invisible joints on a seamless weld, and Bison’s bespoke style corners on mechanical joints. Whatever your choice, we have a home improvement solution for you and your property.

We also provide additional hardware choices with a selection of styles, designs, and finishes. With these options, we offer our cherished customers matching trims and accessories for our selection of sliding sash windows. To design the ideal traditional or modern Harrogate home that you are looking for, you can select from any of our colours.

Security Options

It’s crucial to have a safe and functional home. You can select sliding sash windows from D&I that have passed PAS24 accreditation testing for various intrusion scenarios. You will have more security against break ins and objects coming through the window if you use laminated glass.

To make smaller apertures for children and pets, we offer travel restrictors on the sashes. You won’t ever have to worry about leaving your sliding sash window open when you leave the room thanks to the fact that we put safety first when designing our sliding sash windows.

Energy Ratings

All of our sliding sash windows come standard with double glazing. With an energy rating of “A,” our sliding sash windows are incredibly effective at conserving energy. You can be sure that any draughts and weather related to the wind will stay outside thanks to our additional gaskets surrounding the window edge and brush pile seals between the sashes.

uPVC is completely weatherproof and doesn’t need to be maintained or managed (unlike traditional timber windows). All you have to do to thoroughly clean your new sliding sash windows is wipe them down with a cloth. It can be difficult to provide ongoing home maintenance, so choose the right materials at D&I, and we can help you determine which sliding sash windows are best for your Harrogate home.


At D&I, we assure that our uPVC doors are made to last by utilising materials designed to withstand the test of time. To be exact, 25–30 years! But what happens to our windows after they’ve served their purpose?

You can replace your windows sustainably because uPVC is strong, resilient, and recyclable. They won’t ever be wasted. Recycling your sliding sash windows will lengthen their useful lives and, more importantly, contribute to the greening of the planet! For your sliding sash window, pick a material that will endure for hundreds of years.

sliding sash window costs

uPVC Sliding Sash Window Prices Harrogate & South Yorkshire

What are you waiting for? Get in touch with a member of our team if you want to replace your Harrogate windows with a sustainable, long lasting, and reliable solution. D&I prioritises your home, and our online quoting tool will assist you in making future financial plans while giving you a long-lasting solution for home improvement. Make contact with a helpful employee right away!

Your installation of a brand new sliding sash window can be tailored to meet your specific requirements. You have the option of selecting the number of sashes, the type of glazing, the glass thickness, and the colour finish. You can get assistance selecting the door that is most suitable for your needs by using our online quoting engine. No matter what it is that you are looking for, we strongly encourage you to make use of our quoting engine so that you can obtain an accurate price right from the start and determine the next steps for your individual journey.

We look forward to speaking with you soon.

Check Out The Extra Options




We offer 50 Bison colours from traditional to special foils to match the designs of your Edwardian or modern home. Not to mention: colour coded gaskets. Let us know today.

White Grain Casement Window

White Grain

Golden Oak Casement Window

English Oak

English Oak Casement Window

Irish Oak

Irish Oak Casement Window

Golden Oak

Classic Cream Casement Window

Classic Cream

Chartwell Green Casement Window

Chartwell Green

Agate Grey Casement Window

Agate Grey

Grey Aluminium Colour Casement Window

Grey Aluminium

Black Ash Casement Window

Black Ash

Anthracite Grained Casement Window

Anthracite Grained

Anthracite Smooth Casement Window

Anthracite Smooth

Nut Tree Casement Window

Nut Tree

Rosewood Casement Window


sliding sash window suppliers


If you’re a tradesperson in the South Yorkshire area, we can supply uPVC vertical sliding windows. Get in contact with our friendly team today.

Frequently Asked Questions

We hope you find the answers you need in our frequently asked questions, but if you don’t, contact our professional service team for any of your concerns. 

What’s the energy efficiency of these specific sliding sash windows?

Our sliding sash windows have a WER (Window Energy Rating) of ‘A’. You can find more when you look through our brochure.

You can improve energy efficiency by choosing triple glazing, or when you talk to us about our aluminium casement windows.

Where can I find if I can use uPVC in my renovation?

What if something happens to my window?


Sliding Sash Windows Brochure

If you need to know specific details of our uPVC sliding sash windows, look through our brochure. You’ll find sash sizing, weatherproofing, and glazing details.

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Get in Touch

Our Barnsley team believes in putting customers first, which is why when you call, you’ll get the benefit of calm, friendly service. Let us know about your installation needs.

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Now that you’ve read the benefits of sliding sash windows get your personalized quote. It’s free and painless so that you can plan for your future budget.


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