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
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.
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
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
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.
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.
Michelle V.
Excellent fitters and really polite nd considerate too
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.
Mike T.
Very efficient, communication and timescale all top notch. The assessment beforehand was spot on, the fitter was prompt and easy to work with, did a great job and left no mess. What more could I ask for!
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.
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.
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.
Reloved L.
Fantastic Service from Start to Finish! We received emailed confirmations and updates throughout. The quote was set out very professionally as was all the paperwork. All the team were friendly and professional. The installer Rob was great. He turned up exactly on time both days, he was friendly, respectful, professional and he kept everything clean and tidy. Great Job by all of you. We will be having them back to do more work in a few months :)
Darren M.
Excellent customer service, design and fitting. Throughly pleased
Helen B.
A pleasure to do business with from start to finish, the whole team are fantastic. No pressure tactics, they keep you informed and workmanship was spot on. In love with our new front door!
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.
Caroline Q.
Had a composite door fitted. The fitter was lovely and very good at his job the door looks wonderful. No draughts and the door lets in plenty of light unlike our old one. The locking mechanism looks to be extremely safe and secure. The whole process of buying said door was easy, from the rep who first came, to fitting the door. Everyone at DS was friendly and professional and kept me informed of every step. All in all very pleased
Alan E.
Excellent communication, all visits were on time. Instalation day the team was on time and worked very efficiently despite a bitterly cold day, all was completed (4 windows in one day) and the finish/quality of Instalation was excellent.
All cleaned up and explained the functioning of the windows (locks/ventilation etc)
Entirely satisfied would definitely recommend DS Windows.
Alan
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
clare R.
I love my new door!! Professional service throughout and very accommodating when I changed my mind on design. Thank you! ⭐️⭐️⭐️⭐️⭐️
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.
Tony W.
An overwhelmingly positive experience. Replaced my door with a better quality composite one. Effortless (from my point of view), quick, accurate measurements and quote, installed it in one morning and it looks fantastic (not to mention being much more secure). The installers were friendly and polite, did a high quality job and cleaned up after themselves- couldn’t ask for more.