As the longest serving family run Windows, Doors and Conservatories provider in the Northamptonshire region, here at Martindale Windows and Developments we pride ourselves on exceptional service, the highest quality products and attention to detail with every installation.

With over 40 years experience in the windows and doors industry, we aim to deliver you the perfect solution for your home improvement project. From the very outset of your project we have a dedicated team of surveyors, designers and installers who will ensure that your installation is delivered and fitted on-time and to a standard that our customers and accreditors demand.

Operating from our state-of-the-art showroom and offices in Moulton Park, Northampton, we serve clients throughout Northamptonshire and the surrounding counties of Bedfordshire, Leicestershire, Buckinghamshire and Oxfordshire, tailoring your Windows, Doors or Conservatory around your individual requirements and lifestyle.

Over 25 Years of Family Run Service Excellence

Started in 1992 by Geoff Tarry who has been involved within the Windows and Doors industry for over 40 years, Martindale Windows and Developments have family values and service excellence at the core of everything we do. 

Now run jointly as a father and son team from the heart of Northampton, we have a team of 12 passionate and dedicated office and installation staff who take the upmost care to ensure that every single customer is expertly looked after.

Whether you’re having a simple glazing repair or a full conservatory or development, our experienced team will work with you every step of the way to deliver perfection for your project.


As your next installation of windows, doors or a new conservatory should enhanced your home for many years to come, one area that we never compromise on is the quality of our products.

We source the finest uPVC,  Aluminium and Composite Windows and Doors from leading providers such as Stern Fenster and are fully accredited around the  Fensa industry standard.

In addition to this, all of our products  comply with the Secured by Design  standards  to guarantee the top levels of security and style for your installation. 


Whilst it’s important to select the right products for your projects, with any home improvement project it’s even more essential that you find the right installers to delivery a fitting and finish that meets the highest standards.

With this in mind we use a dedicated team of in-house installers who have a combined experience of over 70 years window, door and conservatory installation expertise. Our friendly staff are always on-time and will take care of your complete fit out, from previous window and door extraction through to clearing up the site after completion. 

With our team you can be rest assured that your project will run smoothly and stress-free from start to finish.


If you’d like to get an idea of just what Martindale Windows can provide for you then why not visit our purpose-built Windows, Doors and Conservatories showroom in the hear of Northampton.

Here we have a wide selection of products on display as well as details brochures to take away and read at your own leisure, helping you to make the right choice about what to include in the improvement of your property.

The showroom is open Mon-Fri for drop-in appointments but should you wish to book an appointment then please contact us below.

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

    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
  • 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

    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