Lincoln's top reviewed, family-run double glazing company

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Visit our showroom

Lincoln's top reviewed, family-run double glazing company

GET A QUOTE
Visit our showroom

uPVC Flush Sash Windows

Perfect for period properties

GET A QUOTE
Alison P.
We're so pleased with our new windows from DS Windows and Doors. The windows themselves are gorgeous and finished to a really high standard, and the professional installation by Matt and Rob was far smoother than anticipated - efficient, tidy and painless. On top of this, the customer service was fantastic - Donna was so organised, helpful and attentive, making the whole process effortless from start to finish. We’d recommend DS Windows and Doors to anyone and would definitely return to them in the future 😊
A M C.
Absolutely can’t fault this company. Extremely helpful and accommodating. 8 weeks from first enquiring to fitting. Darren, Donna and Mark were second to none in their customer care and attention to detail. Will definitely use again.
Alyona M.
Thank you to DS windows and doors. We had all of our windows done and 2 doors and french doors.

We saw Darren in the showroom who helped us with our so many questions as we had never bought windows and doors before.

Donna in the office also so helpful and happy to answer many questions! They were able to fit installation around our schedule.

Matt and Rob the fitters were just so friendly and efficient - they were really tidy and took real care when working. They also answered any questions we had during the process. The windows and doors look amazing and they were installed so quickly!
Priscilla T.
DS windows and Doors did a very good job in installing our sliding door.Courteous efficient staff,good communication skills,and in general a job well done.I will definitely be using them in the future.
Phil W
Great service and installation. A couple of issues with the window suppliers, but all being sorted.
Graham B.
Perfect! The team at DS Windows were friendly, knowledgeable and efficient from start to finish (and patient). Our renovation has gone a lot more smoothly dealing with this company. They understood what my wife and I wanted and fitted around our plans and we are so pleased with the result. Highly recommend 👌
Freja P.
I am very happy with the overall service DS Windows and Doors provided. Donna was very quick with her responses to my questions and sending over a quote for our new windows. The fitters were very efficient and tidy and did a fantastic job. Highly recommend and would use again.
Chris B.
Very impressed. Good quality product. Friendly staff and well fitted door and door frame.
Anna J.
Very happy with my new front door! The process overall was extremeley good. I had lots of chats back and forth to help me decide on a colour and style, and staff were so knowledgeable and helpful and made me mockups and quotes to help me choose. Installation went very smoothly, Rob super professional and kept everything neat and tidy whilst it was being done and explained lots about after care. Very communicative about dates and prices so everything was dealt with smoothly. Very happy with my beautiful front door Thanks!!
Ron de R.
This company was recommended to us. There is no "making good" once the job was completed. It's a all-in job. We are very happy with the way we were dealt with by the office staff and the installers were also very polite and professional. Highly recommended!
Response from the owner:Thank you so much for your kind words and recommendation! We’re really pleased to hear you were happy with both our office team and installers – we’ll be sure to pass your feedback on to them. It’s great to know the whole process met your expectations from start to finish. If you ever need anything in the future, we’re always here to help!
Irish Oak uPVC Flush Sash Window

uPVC Flush Sash Windows

uPVC Flush Sash windows are designed to mimic the look of traditional timber windows, but without the hassle of maintenance.

The sash of the window sits flush within the outer frame, giving a flat appearance, retaining the style and elegance of timber windows, but with all the thermal benefits PVC has to offer.

The flush sash range of uPVC windows is perfect for period properties and those in conservation areas due to their timber-like appearance. 

Benefits of our uPVC windows

Thermally efficient to keep the heat in

Double & triple glazing options available

10 year insurance-backed guarantee

CERTASS approved installers

Ideal windows for conservation areas

Conservation areas have strict requirements when it comes to replacement windows, but with flush external contours our uPVC flush sash windows are in keeping with period properties. You should always consult with your local planning/conservation officer before replacing your windows, but our team are on hand to discuss your needs.

Agate Grey Flush Sash Windows

Slim & aesthetic profiles give the appearance of timber

Why choose us?

We're an Honest & reliable local business you can count on

We offer guaranteed competitive pricing to our customers

We don't 'fit & forget', offering great aftercare

We treat your home with care, tidying up after ourselves

uPVC flush sash windows are a popular choice for modern homes due to their sleek and contemporary design. But, their benefits go beyond just aesthetics. Here are some advantages of flush uPVC windows:

  • Energy Efficiency: uPVC flush sash windows are designed to provide excellent thermal performance. They are fitted with multi-chambered frames and energy-efficient glass, which work together to keep your home warm in winter and cool in summer. This leads to lower energy bills and a more comfortable living space.
  • Easy Maintenance: uPVC flush sash windows require minimal maintenance, making them an excellent choice for busy homeowners. They are easy to clean and do not require painting or staining. With just a little care, they will look great for years to come.
  • Enhanced Security: uPVC flush sash windows provide enhanced security for your home. They are fitted with high-quality locking mechanisms and reinforced frames, which deter intruders and provide you with peace of mind.
  • Sound Insulation: uPVC flush sash windows are also effective in reducing outside noise, creating a more peaceful and comfortable home environment.
  • Aesthetics: Finally, uPVC flush sash windows are designed to provide a clean and streamlined appearance that complements both traditional and modern architecture. They are available in a range of colours and finishes, allowing you to create a personalized look that matches your style and taste.

In conclusion, uPVC flush sash windows offer many benefits, from energy efficiency to enhanced security, easy maintenance, and a sleek appearance. If you’re looking for a modern and practical window solution, consider uPVC flush sash windows for your home.

More than 200 5-star customer reviews

We pride ourselves on offering amazing service – right from the initial enquiry through to installation and aftercare – and our 200+ reviews from happy customers reflect this.

We’re confident our family-run double glazing company is the most trusted choice in Lincoln and the surrounding areas, and the majority of our work comes from repeat customers and recommendations.

With DS Windows & Doors you’re in safe hands when it comes to replacing your uPVC windows in Lincoln.

DS Windows & Doors - Visit our showroom!
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Based on 214 reviews
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DS Windows & Doors

Lincoln’s top reviewed, family-run double glazing company

  • Unit 5 Blackwood Court, Teal Park, Lincoln, Lincolnshire, LN6 3AE
  • 01522 305383
  • info@dsaluminium.co.uk
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© DS Windows & Doors 2026.
Eleanor B.
Salesman was on time and professional, didn't push us for a sale. When we did buy the customer service was great and an installation date was swiftly organised. This did have to move by a few days but fitters arrived on time and worked all day on a tricky installation. They cleaned up after themselves regularly and were polite and friendly. Ability to pay by credit card is a great option. Wouldn't hesitate to recommend.
val S.
We had a porch door fitted & are very pleased with it. All the people are friendly & helpful. We would highly recommend DS Windows & Doors.
Response from the owner:Thank you for your lovely review! We’re really pleased you’re happy with your new porch door and the service you received. It’s great to hear the team were friendly and helpful throughout. We really appreciate your recommendation – thank you for choosing DS Windows & Doors!
Amy B.
Fantastic service from Rob.S - very professional and got the job done quickly and efficiently! Would highly recommend 👍🏼
Response from the owner:Thank you for your great review! We’re really pleased to hear Rob delivered such a professional and efficient service. We’ll be sure to pass your kind words on to him. Thanks again for your recommendation – we really appreciate it!
rachel L.
Fantastic experience from Darren and his team from start to finish. Was invited to the showroom and warmly met by Donna who discussed all our options.
Excellent communication about installation, and what to expect.
Matt did an absolutely brilliant job of installing our door, left everything spotless and went through everything to make sure we were happy before he left. Would 100% recommend.
June G.
Lily E.
Matt fitted a new door for my mother and she couldn’t recommend him highly enough. The door looks fantastic and she was extremely happy with the customer service and care she received
Response from the owner:Thank you for your lovely review! We’re really pleased to hear your mum is so happy with her new door and the service she received. We’ll make sure Matt hears your kind feedback – it means a lot. Thanks again for your recommendation!
Alyona M.
Thank you to DS windows and doors. We had all of our windows done and 2 doors and french doors.

We saw Darren in the showroom who helped us with our so many questions as we had never bought windows and doors before.

Donna in the office also so helpful and happy to answer many questions! They were able to fit installation around our schedule.

Matt and Rob the fitters were just so friendly and efficient - they were really tidy and took real care when working. They also answered any questions we had during the process. The windows and doors look amazing and they were installed so quickly!
Jeremy La C.
This is a great firm to deal with. Communication throughout was excellent, the price was very fair and the fitting of the front door was carried out efficiently and skilfully by Matt who was also a really nice bloke as well! Highly recommended
Response from the owner:Thank you for your fantastic review! We’re really pleased to hear you found the whole process smooth and that you were happy with the communication and pricing. Matt will be delighted to hear your kind words – we’re glad you’re happy with your new front door and the quality of the installation. Thanks again for your recommendation, it’s greatly appreciated!
clare R.
I love my new door!! Professional service throughout and very accommodating when I changed my mind on design. Thank you! ⭐️⭐️⭐️⭐️⭐️
Steve H.
Contacted them via phone to request a quote. Was told by the lady who answered that I would get a rough estimate in a few days. Nothing was sent, so left a voicemail and also sent a message through their website contact form, yet nobody bothered to get back to me and was ultimately ignored.