Business Details
35 Years
experience
Trusted Window & Door Installation in Sheffield
Established in 1991, Don Valley Windows has built a reputation as a trusted provider of high-quality uPVC windows, doors, and conservatories across Sheffield and surrounding areas. Our Certass accreditation underscores our commitment to industry-leading standards, with a focus on energy-efficient solutions and exceptional customer service. We specialise in bespoke installations, offering A-rated VEKA Halo products designed to enhance both residential and commercial properties. With over 30 years of experience, our team delivers tailored solutions, including sliding sash windows, composite doors, and contemporary conservatories, all backed by comprehensive warranties.Our 10-year insurance-backed guarantee and 20-year sealed unit warranty reflect our confidence in product durability. Customer satisfaction is central to our operations, evidenced by hundreds of 5-star reviews praising our punctuality, craftsmanship, and transparent pricing. We serve Sheffield, Rotherham, Doncaster, Barnsley, and beyond, combining technical expertise with a personal touch to ensure every project meets exacting standards.
Services
uPVC Windows
Composite Doors
Bi-Fold Doors
Conservatories
Sliding Sash Windows
Flush Sash Windows
Aluminium Windows
Casement Windows
Door Installation
Conservatory Design
Details
- Year established: 1991
Highlights and features
- We offer over 30 years of experience in window and door installations.
- Our team holds Certass accreditation for quality assurance.
- We provide a 10-year insurance-backed warranty on all installations.
- Our A-rated VEKA Halo windows ensure energy efficiency.
- We have hundreds of 5-star reviews from satisfied customers.
Associations and certifications
- Certass
What people say
Excellent service
Timely installations
High-quality products
Great value
No mess left
Services
uPVC Windows
Our uPVC windows combine durability with energy efficiency, featuring A-rated VEKA Halo profiles and low-energy glass. Designed to reduce heat loss, they include warm edge spacer technology and a 20-year sealed unit warranty. Available in white, beige, or woodgrain finishes, these windows enhance property value while requiring minimal maintenance.
Composite Doors
Composite doors merge security with aesthetic appeal, constructed from reinforced materials resistant to warping and forced entry. Featuring multi-point locking systems and thermal insulation, they offer enhanced home security. Customisable in over 200 RAL colours, these doors provide long-term durability and a modern upgrade to any property.
Conservatories
We design and install bespoke conservatories using A-rated window frames and argon-filled glass units. Available in Edwardian, Victorian, and P-shaped styles, these structures offer year-round usability with 10-year warranties on frames and fittings. Our service includes planning permissions, electrics, and underfloor heating options.
Bi-Fold Doors
Bi-fold doors create seamless indoor-outdoor living spaces with slim aluminium frames and expansive glass panels. Their weatherproof design allows full opening for ventilation, while low-maintenance uPVC components ensure longevity. Ideal for connecting living areas to gardens, these doors feature secure locking mechanisms and thermal efficiency.
Sliding Sash Windows
Traditional sliding sash windows are crafted from uPVC for modern performance without compromising aesthetics. Their smooth vertical operation and Georgian bar options replicate classic architecture while offering improved insulation. Each installation includes draught-proofing and a 10-year product guarantee.
People
Lewis Carder
Director
Lewis Carder leads Don Valley Windows with over 30 years of industry expertise. Committed to quality, he ensures every installation meets Certass standards while maintaining competitive pricing and exceptional customer care.
Paul Carder
Founder
Paul Carder founded Don Valley Windows in 1991, establishing its reputation for excellence. His legacy continues through the company's dedication to craftsmanship, innovation, and customer satisfaction across Yorkshire.
Questions
Do uPVC windows require much maintenance?
uPVC windows need minimal upkeep. Clean frames with soapy water and lubricate hinges annually. Seals should be checked periodically for drafts or water ingress.
What styles of windows do you offer?
We provide casement, sliding sash, tilt-and-turn, bay, and awning windows in various colours and finishes, including woodgrain and dual-tone options.
Are your windows energy efficient?
Yes, our A-rated VEKA Halo windows use low-E glass and warm edge spacers to reduce heat loss, potentially lowering energy bills by up to 20%.
What security features do your doors have?
Composite doors include multi-point locks, anti-snap hinges, and steel reinforcements. All installations meet Secured by Design standards for enhanced home security.
What warranties apply to your products?
We offer a 10-year insurance-backed warranty on installations and a 20-year warranty on sealed glass units for added peace of mind.
Are you Certass accredited?
Yes, our Certass registration ensures compliance with industry standards, providing dispute resolution and insurance-backed guarantees for all installations.
Reviews (4)
Phil Holmes
Dec 06, 2021
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Very professional outfit. We've had a complete refit of doors and windows and are very happy with the results. Lewis and his team were helpful, informative and kept us informed throughout the consultation and measuring process. The fitters were courteous, respectful and extremely hard working. Nothing too much trouble. In over 45 years of home ownership and dozens of contractors and tradesmen, I can honestly say that they were the best we have experienced. Highly recommended.
Charlotte Whittaker
Sep 07, 2021
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I have previously used this company to replace some of my windows panels so I emailed and called them again as I needed another one replacing. Unfortunately no-one ever got back to me so I shall have to go elsewhere.
Gerard Hunter
Mar 22, 2021
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Great products, fantastic prices and fast effective fitting. We ordered two bay windows to be fitted in the living room and bedroom.
Don valley windows beat all other quotes by a minimum of 1,000, and were half the price of one company. Where other companies made a fuss over certain details, these guys just got in with it, no fuss. The product is of excellent quality. The fitting was all done in half a day, and they even fit us in early for the job. Would highly recommend these if you are looking for some new windows.
Don valley windows beat all other quotes by a minimum of 1,000, and were half the price of one company. Where other companies made a fuss over certain details, these guys just got in with it, no fuss. The product is of excellent quality. The fitting was all done in half a day, and they even fit us in early for the job. Would highly recommend these if you are looking for some new windows.
Louise Monk
Mar 21, 2021
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Would like to thank Lewis and his team for an excellent job of providing and fitting two bay Windows three Windows patio doors and a composite door with two glass panels. Arrived at our bungalow at 8am and finished by 2.30pm all fitted, cleaned up. Polite and lovely guys. Couldn't recommend them enough. Oh by the way we live in Sutton on sea....so will spread the word.
