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
Lyndsey W.
Brilliant service and great job thank you
Annaliese H.
Phenomenal service throughout. Jim was very informative about our options and was very helpful. Rob came and put our new front door in and did an excellent job. He was friendly and polite. We are extremely happy and would highly recommend. Will definitely use again in the future!
Steve H.
A very professional company from contact to fitting.
A few queries before fitting were cleared up...thanks Donna. Then on fitting day Rob and and Matt were very professional and courteous. Their work was very tidy and all cleaned up at the end. I would happily recommend this company and use them again.
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!
Ken N.
Friendly service. All staff helpful throughout the process. Fair price. Really happy with the door supplied, the quality of the fit and the service throughout. Would highly recommend.
Marysia G.
See below pics!
Had bifolds fitted by Matt and Rob. Super efficient,tidy and friendly! Doors look amazing!
Would highly recommend DS windows!
Thanks guys
Josh S.
Great communication, great installation team and the price was good!
Can’t recommend more, details sent on to friends & family.
Andrew T.
Excellent job professionally executed. The job was a simple replacement of some blown double glazing units but from the initial measuring to final fitting, the service from DS Windows & Doors was exceptional. No hard sell from the sales rep, and the fitter, Rob was excellent, friendly and very professional. I would not hesitate to recommend DS Windows & Doors and they will be my first call for any future window or door needs.
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.
Hannah C
Wow, where do I begin with this company from my first enquiry to my final fitting yesterday? It has been AMAZING the quote given to me was fair and honest also had no pushy sales technique which made me really want to use this company from the get go! Darren came to survey my home at the time agreed really nice friendly guy. I even had some questions about a window upstairs Unrelated to my enquiry and he happily had a look for me and gave me some advice. I was kept up to date whilst my order was processed. Yesterday I had the pleasure of meeting Matt who fitted my French doors for me with care and professionalism He was super friendly and down to earth. Matt took time ensuring that everything was just right keeping me updated along the way. He cleaned up and also advised me on care going forward. I’m so happy with the end result I’ve actually already told a friend about this company. All I can say is I wish I had a found DS Window And Doors for my previous work don’t hesitate in using this company The quality of the door is top notch no damage to my wall at all when removing the old ones these guys really do care about what they do and their customers. The people I dealt with in person and via telephone/emails were amazing and so lovely that goes such a long way thank you all so much for everything! I wish you all the best going forward with your business ⭐️⭐️⭐️⭐️ ⭐️ +
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 205 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 2025.
    David B.
    Without doubt the best installer that I have used, go on you cannot go wrong, they are the best. Not five star it is 10 star for me
    Thank you DS Windows &Doors
    Response from the owner:Hi David, thank you for taking the time to leave us a review. We're so happy you're pleased with the service you received - thanks again for choosing DS.
    Marcus A.
    Had a new composite door fitted and the guys over at Ds windows were helpful all through the process and we are very pleased with our new door.
    Response from the owner:Hi Marcus, so pleased to hear about your positive experience with us – thank you once again for choosing DS.
    Elizabeth G.
    Excellent service throughout. The engineers managed to repair my bi-fold doors. Thank you!
    Response from the owner:Hi Elizabeth, thanks so much for your kind words – reviews really help us as a small, family-run business. Many thanks for choosing DS Windows & Doors.
    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.
    Alan D.
    Fantastic service,very pleased with the service we had from the very start to the end. Brilliant team who were both helpful and informative.
    Response from the owner:Hi Alan, thank you for taking the time to leave us a review - we really appreciate it!
    Charlotte M.
    Rob was very helpful when fitting my door. Despite coming across a problem, he ensured everything was perfect before he left.
    Response from the owner:Hi Charlotte, so pleased to hear about your positive experience with us – thank you once again for choosing DS.
    Bev H.
    Response from the owner:Hi Bev, thank you for taking the time to leave us a review. We're so happy you're pleased with the service you received - thanks again for choosing DS.
    Julian H.
    Had all my old windows and doors replaced. Excellent service from friendly helpful staff Darren, Judith, Rob and Matt. Installers were ptompt, efficient and ensured that everything was cleaned up afterwards. Would be happy to recommend DS Windows to anyone thinking of replacing windows or doors. Thanks.
    Response from the owner:Hi Julian, thanks so much for your kind words – reviews really help us as a small, family-run business. Many thanks for choosing DS Windows & Doors.
    Ann P.
    Excellent from the start to the end.. nothing too much. Very professional
    Response from the owner:Hi Ann, thank you for taking the time to leave us a review. We're so happy you're pleased with the service you received - thanks again for choosing DS.
    Helen Z.
    Outstanding service from start to finish. Nothing was too much trouble for Darren and Judith. Our queries were answered promptly. Mat and Rob were very polite and courteous and left everything clean and tidy upon completion. A very professional company who we will definitely use again. We highly recommend DS Windows & Doors.
    Response from the owner:Hi Helen, so pleased to hear about your positive experience with us – thank you once again for choosing DS.