With over 40 years’ experience in the windows, doors and conservatory industry, family-run Martindale Windows are Northampton’s leading home improvement experts. We have built a long-standing reputation within the Northamptonshire area for combining the finest double-glazed products with expert FENSA registered workmanship to seamlessly take your project from concept to completion with the highest possible standards. 

What’s more, because the majority of our windows, doors and conservatory work comes from customer recommendations (a fact we’re very proud of), you can be assured of the quality you’ll receive on your domestic development project. Our window, door & conservatory installation teams work throughout Northampton, Milton Keynes, Bedford, Oxford and beyond, so if you’re looking to get started on an exciting new project in one of these areas, contact us today to arrange a free quotation!


When choosing the perfect Windows or Doors, it’s essential that you select a solution that improves the energy efficiency of your home. It’s for this reason that all of our glazing products meet with the BFRC Energy Efficiency Rating.



Finding the ideal Windows for your home can now be easier than ever before with Northampton based Martindale Windows. By supplying the finest range of Windows that the market has to offer, we can help you to find a solution that perfectly matches the requirements of your home.

Using the most stylish and secure uPVC, Aluminium & Hardwood Windows, we can help you to improve the style, security and . From a full set of Flush Sash Windows to Bay & Bow or Triple Glazed Windows, we'll find your perfect glazing, all backed by our 10 Year Window Guarantee.



Installing the finest quality Doors is the perfect way to enhance the style and security of your home. Whether you require a uPVC, Aluminium or Composite door solution, the range we provide at Martindale Windows and Developments gives you a wealth of choice.

From traditional front doors to ultra-modern Bi-Fold & Patio Doors, we can help you to discover the ideal options for your property. Whether your house is in Northampton, Milton Keynes or further afield, we guarantee Martindale's expert range will surpass your requirements for years to come.



Looking to create extra space with a new Conservatory? If so then Northants based Martindale Windows can help! We'll work with you from the early stages of planning to guide you through the necessary regulations needed when considering an extension or conversion of your property.

Using experienced tradesmen and high-quality property improvement products, the perfect Traditional or Warm Roof Conservatory around your exact requirements.



Perfect for enjoying your garden  all year round, Martindale's unique range of exterior Garden Rooms are the ideal solution for giving your Northamptonshire property a wonderful outdoor entertaining space or office that can be customised to your individual requirements.

Available in a wide range of sizes and colour finishes, our Garden Rooms are made from the finest materials and to the highest specification to last the test of time.



With our bespoke Kitchen Design service in partnership with Grand Union Designs, Martindale Windows can help you to design the kitchen of your dreams. Our team of qualified carpenters and kitchen installers will ensure you have the right high-end kitchen to suit you home.

So whether you're looking for contemporary or traditional kitchen design to improve your home, we will be able to advise on a style, layout and cabinet configuration that's tailored to your bespoke requirements

Get Inspired...

No matter what home improvement project you’re looking to work on, we have a tailored solution to suit your needs. If you’re looking for inspiration, you can also visit our new Inspiration Video Gallery below to get some exciting ideas, or discover how you can spread the cost of your project with our range of Window, Door & Conservatory Finance Options.

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We are proud that Martindale Windows is celebrating 30 years in business this year!

What our customers say...

  • Matt and Con from Martindales came to change my patio doors today!! They were really quick, clean and did a very good job! They went well beyond what was expected and I was extremely grateful to them both. Wouldn’t hesitate to recommend this company! Thank you 😊

    Vanessa Davies

    In 2021 we used Martingdale for a new sliding door double aspect replacing an existing window on the 1st floor onto a balcony. Fantastic job across 3 days due to I-frame installation also required. We used them again in April 2022 to replace a large window (2 floors up) and Gareth, his son, and Cliff did an amazing installation despite emergency use of scaffolding which was required. We are just completing another 4 floor purchase in Northampton and will probably require a whole home replacement front and back – surprised if we use anyone else. During the same time in 2021 we had a complete new conservatory, extensive bifold doors, windows, etc in a large country property elsewhere so can compare prices and work across suppliers. We would highly recommend Martindale.

    Olinga Taeed
  • very friendly reliable company got job done in time scale and done an excellent job nice workman very tidy would recommend and use this company again have previously used for another job and they don’t disappoint they turn up on time and gets the job done very pleased with them a++++

    dazza coom

    From our first contact to the completion of the installation of our new French doors, all the staff office and site workers have been excellent. We are now looking forward to Martindales carrying out further work at our property.

    Philip Jones
  • Fantastic service start to finish and any small issues that cropped up weren’t a problem to put right. Everyone we have dealt with was polite, friendly and informative. Particular thanks to Tony and Joe for the sales process and Neil and Gerry for fitting!

    Michael Neal-Brook

    Definitely the Company to choose!I highly recommend! ⭐⭐⭐⭐⭐I contacted Martindale on behalf of my Father who wanted to start some house renovations with double glazing and a front door. Weary of typical double glazing salesmen and of course wanting a quality service for my Dad, I was more than pleasantly surprised by Martindale. The reviews are spot on! From the initial contact with Tony who was very approachable and helpful, the regular updates from Joe, right through to the excellent fitting by Jerry and Ryan – we have been absolutely delighted with the professionalism, consideration and quality of service and products we have recieved.Absolutley no sales pressure, a competitive price and with a genuinely efficient, friendly, tidy and punctual team. The finished product not only looks great but is much more secure and instantly has made the house warmer and quieter. Thank you so much for making this painless for my Father. Much appreciated! We will definitely be contacting you for any future works we need & will happily reccomend Martindale to our friends and family! 👍

    Kerrie Marks

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