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

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Visit our showroom

uPVC Flush Sash Windows

Perfect for period properties

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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!
Ann B.
DS Doors and Windows came recommended to us, I cannot say how highly I would recommend this company to anyone looking to replace their existing doors and windows. From beginning to end, the communication, the guys that fitted our doors, all were absolutely amazing, we are thrilled with our new doors, they are all friendly, professional, clean up after themselves and did a fantastic job. It’s difficult these days for some company’s to deliver on what they promise but they did that and more. Thank you to all of you for everything, you are all a credit to the company
Response from the owner:Thank you so much for such a fantastic review! We’re absolutely delighted to hear how happy you are with your new doors and the service you received from start to finish. It means a lot to us that you felt well looked after by both our team in the office and our installers. We take great pride in delivering on what we promise, so your kind words really do mean a lot to everyone here. Thank you again for your recommendation – it’s truly appreciated!
michelle S.
Extremely happy with the professional fitting of my front and back doors, from the start of this journey to the end this company was outstanding. Matt and Rob who fitted the doors were fantastic guys. I would recommend them to family and friends. Thanks for doing an excellent job one very happy customer!
Response from the owner:Thank you so much for your lovely review! We’re thrilled to hear you’re so happy with your new front and back doors and the service you received throughout. Matt and Rob will be really pleased to hear your kind words – we’ll be sure to pass them on! It’s great to know you’d recommend us to your family and friends, that truly means a lot. Thanks again for choosing us – enjoy your new doors!
Robert K.
We decided on laminated doors for improved installation.visited Ds windows & Doors show room and selected a front and back door with fittings installation date was set Jan 27 the first storm of 2026 Ds fitters arrived on time okay to fit the doors ? With that they proceeded with the fitting in the rain they completed approx 3 pm and that’s when it stopped raining and they a
Had done a great job
Response from the owner:Thank you so much for your lovely review! We’re delighted to hear you’re happy with your new laminated doors and the service you received. We’re especially impressed our team carried on through the first storm of the year and still delivered a great result! It’s fantastic to know everything was completed to a high standard despite the weather. Thanks again for choosing us – your feedback is truly appreciated!
Chris H.
Excellent experience - easy to arrange (and rearrange) the visit. Rob did a fantastic job on our door, which now closes and locks beautifully. Highly recommended.
Response from the owner:Thank you for your great review! We’re so pleased to hear you had an excellent experience and that everything was easy to arrange. Rob will be delighted to know you’re happy with the work – it’s great to hear your door is now closing and locking perfectly! Thanks again for your recommendation, it really means a lot to us.
Eleanor S.
Great work from Rob and Matt plus an extra visit from Rob to rectify an issue. They were very helpful and friendly throughout the installation week and made a real effort to prep and clear away at the end of each day. Thanks both
Response from the owner:Thank you for your lovely feedback! We’re really pleased to hear you were happy with the work carried out by Rob and Matt. It’s great to know they kept everything tidy and took the time to make sure everything was just right, including the follow-up visit from Rob. We’ll be sure to pass your kind words on to them. Thanks again for choosing us – we really appreciate it!
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!
Caroline D.
Big thanks to Matt for the job this week, replacing a glass panel with UPVC to install a cat flap in our new home.

It wasn't the nicest weather to be working outside and he was very patient with all my faffing about and overthinking the correct height for the hole!

After he was done he cleaned up after himself, and took away all the debris, leaving nothing behind but two happy cats (and one very pleased cat mama!).
Response from the owner:Thank you so much for your lovely review! We’re really pleased to hear you’re happy with the work and that Matt looked after you so well. We’ll definitely pass on your kind words – it’s great to know everything was left clean and tidy, with two very happy cats at the end of it! Thanks again for choosing us – we hope you and your cats enjoy it for years to come!
Swibbers
Professional, high quality and thorough service.

From start to finish, our front door replacement was executed seamlessly.
Fitter was polite and courteous with an excellent attention to detail.
Our door is perfectly fitted, handed over with a full aftercare guidance including set up of the supplied smartlock.
Highly recommended company that we will no doubt use again for our other doors.

Thank you.
Response from the owner:Thank you for such a wonderful review! We’re delighted to hear you’re so happy with your new front door and the service you received from start to finish. It’s great to know the installation, attention to detail, and aftercare guidance – including the smart lock setup – all met your expectations. We take real pride in delivering a seamless experience, so your feedback means a lot to us. Thank you again for your recommendation, and we look forward to helping you with your other doors in the future!
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.
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!
5.0
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.
J F.
Very Impressive from initial enquiry through to installation and after sales contact.

After having a very bad experience with replacement windows I was to say the least dubious about having more home improvements. I need not have worried.

From my initial enquiry, it was great not to be given “hard sell” tactics. All emails were answered swiftly and when visiting the showroom Donna was very helpful.

Installation went according to plan, Rob was friendly, punctual. very tidy worker and did a great job.

Donna telephoned to check I was happy with the end result and the paperwork for the guarantee was emailed across promptly.

Will definitely be using this company again.
Response from the owner:Thank you for your great review! We’re really pleased we could restore your confidence after your previous experience. It’s great to hear Donna and Rob looked after you so well and that everything ran smoothly from start to finish. We really appreciate your kind words and your future recommendation – thank you for choosing DS Windows & Doors!
Ryan W.
Had a new composite front door installed today by Matt. Matt was very friendly and polite, cleaned up after himself and made sure i was happy before he left. The customer experience from beginning to end has been great. No pushy sales team just years of experience on the job and all questioned answered and explained. You can tell this is a family run business and not a nationwide company that do a job and leave, they are people at the end of the day and interact like people. Its been a pleasure doing business with the team. Thanks everyone!
Response from the owner:Thank you so much for your fantastic review! We’re really pleased you’re happy with your new composite door and the service from start to finish.
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!
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!
William H.
Door fitter was very pleasant and professional would definitely use again
Response from the owner:Thank you for your kind review! We’re really pleased to hear you were happy with the fitter and the service. We really appreciate your feedback and look forward to working with you again in the future!
Chris H.
Excellent experience - easy to arrange (and rearrange) the visit. Rob did a fantastic job on our door, which now closes and locks beautifully. Highly recommended.
Response from the owner:Thank you for your great review! We’re so pleased to hear you had an excellent experience and that everything was easy to arrange. Rob will be delighted to know you’re happy with the work – it’s great to hear your door is now closing and locking perfectly! Thanks again for your recommendation, it really means a lot to us.
Caroline D.
Big thanks to Matt for the job this week, replacing a glass panel with UPVC to install a cat flap in our new home.

It wasn't the nicest weather to be working outside and he was very patient with all my faffing about and overthinking the correct height for the hole!

After he was done he cleaned up after himself, and took away all the debris, leaving nothing behind but two happy cats (and one very pleased cat mama!).
Response from the owner:Thank you so much for your lovely review! We’re really pleased to hear you’re happy with the work and that Matt looked after you so well. We’ll definitely pass on your kind words – it’s great to know everything was left clean and tidy, with two very happy cats at the end of it! Thanks again for choosing us – we hope you and your cats enjoy it for years to come!
Julia M.
DS Windows and Doors exceeded all expectations. I spent quite a while searching for a company I felt I could trust. Their other reviews were really good so I decided to give them a call. I spoke to a lovely lady called Donna, she answered all my questions and was so bubbly and set my mind at ease to give them a try. Darren came to give a quote. He was very helpful and had lots of good suggestions for windows we may not of thought of. We found the cost resonable and went ahead with the order.
I was apprehensive, expecting there to be quite a bit of mess, but need not of worried. Two lovely guys Matt and Rob came to do the installation and they were brilliant. Their work was so neat and tidy, no mess apart from a bit of dust. Could not of asked for nicer people, or a better job. Really thrilled with everything. I totally recommend this company.
Response from the owner:Thank you so much for your lovely review! We’re really pleased you chose us and that Donna, Darren, Matt and Rob all looked after you so well. It’s great to hear you were happy with the advice, the installation, and how tidy everything was left. We really appreciate your recommendation – thanks again for trusting DS Windows & Doors!
Paddy D.
Friendly, professional business from first visit to their showroom to last phone conversation checking all was well. Prompt with giving a quote. No messing about with the pricing, the work was carried out well. Happy to accommodate the date i wanted the work done. Immaculately tidy. And now I have a lovely new front door. :-)
Highly recommended.
Response from the owner:Thank you for your great review! We’re really pleased you had such a smooth experience from showroom visit through to completion. It’s great to hear you were happy with the pricing, communication, and the quality of the work – and even better that you’re loving your new front door! Thanks again for your recommendation, we really appreciate it.
Ann B.
DS Doors and Windows came recommended to us, I cannot say how highly I would recommend this company to anyone looking to replace their existing doors and windows. From beginning to end, the communication, the guys that fitted our doors, all were absolutely amazing, we are thrilled with our new doors, they are all friendly, professional, clean up after themselves and did a fantastic job. It’s difficult these days for some company’s to deliver on what they promise but they did that and more. Thank you to all of you for everything, you are all a credit to the company
Response from the owner:Thank you so much for such a fantastic review! We’re absolutely delighted to hear how happy you are with your new doors and the service you received from start to finish. It means a lot to us that you felt well looked after by both our team in the office and our installers. We take great pride in delivering on what we promise, so your kind words really do mean a lot to everyone here. Thank you again for your recommendation – it’s truly appreciated!