Phone Number

0114 2855 973

Open Hours

Mon Fri 09:00-17:00

Who we are

Don Valley

For over 30 years, Don Valley Windows has been the trusted provider of top-quality window, door, and conservatory installations throughout Yorkshire and beyond.

With roots dating back to 1991, we service many areas, including Sheffield, Rotherham, Barnsley, Doncaster, Chesterfield, Worksop and more.

“Don Valley Windows – established in 1991 prides itself on our quality workmanship and second-to-none customer service, we always go above and beyond for our customers.”

Lewis Carder

You Can Trust


In Memoriam

Paul Carder

Founder - in memoriam

It is with heavy hearts that we at Don Valley Windows mourn the loss of our founder and leader, Paul Carder.

Paul founded our company in 1991 and built it into the thriving family-run business it is today.

He will forever be remembered for his unwavering dedication, passion, and commitment to excellence in the industry.

Paul’s legacy will live on through the countless lives he touched and the impact he made on the community.

Greatly missed, never forgotten.


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Certass Registered Installer

Don Valley Windows proudly holds Certass registration, setting the benchmark for excellence in home improvement solutions.

Our affiliation with Certass serves as your guarantee of the unrivalled quality and craftsmanship we deliver in each project. Subject to frequent audits and stringent evaluations, we continually uphold and surpass the industry’s demanding standards for windows, doors, and a variety of glazing installations.

So, what does our Certass status mean for you? Simply put, you can place your trust in us, safe in the knowledge that your home is in expert hands. Our Certass credentials do more than just certify us as a contractor; they establish us as a dedicated team of professionals who are wholly committed to your satisfaction.

Furthermore, our Certass endorsement comes with extra safeguards, including an avenue for dispute resolution and an insurance-backed guarantee to give you ultimate peace of mind.

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