Endorsed by Which?

KJM Windows and Conservatories

4.9

80 Reviews

Opening Hours
Today - 09:00–14:00
  • Monday 09:00–17:00
  • Tuesday 09:00–17:00
  • Wednesday 09:00–17:00
  • Thursday 09:00–17:00
  • Friday 09:00–17:00
  • Saturday 09:00–14:00
  • Sunday - Closed

Organisations and Awards

FEBRUARY 2024

About

KJM Windows and Conservatories an multiple award winning company were formed in 1983. Over the years KJM has become a well established and a reputable glazing company, which has gained the trust of thousands of home owners and businesses alike! To date we have installed over £90,000,000 of glazing products. Our diverse range of materials gives you the options that you require. We don't just sell PVCu, but offer timber and aluminium as well. This is backed up with a comprehensive 10 year warranty (insurance backed) that has a proven record. We have many accreditations, including G11, G13, G14 and G15 Installer of the year finalists, Glass and Glazing Federation (GGF) members, Hampshire Trading Standards approved and of course Which? Trusted Traders. Sales calls are free, without pressure and our pricing is competitive. There is no hype or special "buy one get one free" offers, just good honest pricing. Give us a try, you wont be disappointed.

What we do

  • Glaziers

    • Double glazing installation
    • Timber windows
    • Sash windows
    • Window consultants
    • Aluminium Windows
    • Double glazed units
    • Double glazing repair
    • Replacement window services and repairs
    • Stained glass
    • Triple Glazing
    • UPVC Windows
  • Conservatories

    • Hardwood conservatories and orangeries
    • Sun Lounge
  • Doors

    • Patio doors
    • Timber doors
    • Bi-fold doors
    • ​Aluminium doors
    • Composite doors
    • Front door
    • French doors
    • UPVC doors
    • Door repairs
    • Orangeries

Customer reviews

Why you can trust these reviews

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100% of the reviews we publish have been through our stringent moderation process.

4.9
80 reviews
Customer Service
4.9
Quality
5.0
Value
4.9
Sort by
Window replacement and conservatory new fixed roof and windows plus external doors. Great service and workmanship.
Customer Service
Quality
Value
A great company with very customer-centric staff, from the sales team to the project manager and window fitters. Excellent workmanship, clean and tidy and friendly. Good quality products, we are very happy with the finished product. Delays with suppliers was dealt with professionally with great communication. Delays were also recompensed fairly. We would recommend using this company for all your windows, doors and conservatory changes.
Customer in Hampshire Posted on 30/01/2025 , work completed 20/12/2024
The trader replied (on 31/01/2025)
Thank you for taking the time to review KJM. It’s great to see the sentence “Excellent workmanship, clean and tidy and friendly” We always strive to be the best in the industry, thank you again Mark and all the team at KJM
KJM Andover window installation
Customer Service
Quality
Value
As a Commercial Construction Project Manager I cannot recommend highly enough the service and window installation that KJM carried out on my home. From initial enquiry to completion, their communication and service was exemplary. The final product installation was spot on. Very happy and am instructing them to now install external doors.
Customer in Hampshire Posted on 23/01/2025 , work completed 30/11/2024
The trader replied (on 31/01/2025)
Thank you for the 5*Which review? I am so pleased to see that you rate KJM from the beginning to the end. It’s great too see that all the staff work with the same ethos. Thank you again, Mark and all the team at KJM
New doors, new windows and a new solid conservatory roof
Customer Service
Quality
Value
I recently used KJM to have all the external doors and windows replaced in my home and to have a solid roof installed on an existing conservatory. From start to finish, they have been absolutely outstanding. No pushy sales and no complaints when making changes to the styles of doors and windows we wanted and we made lots of changes. Communication was brilliant and I was kept up to date on a regular basis (particularly as I had the works done over December and January and weather was a concern). The teams who undertook the work were excellent and very hard working often working in very cold conditions. Every evening they would clean up and leave everything spotless. Windows were changed without a need to redecorate. Doors and lovely and work faultlessly. The new conservatory roof has made such a difference and I now have a room I can use. They even came back and spent several hours cleaning the entire conservatory inside and out. All the staff are outstanding and really friendly and the quality of the work cannot be faulted. I couldn't be happier with the results.
Customer in Wiltshire Posted on 21/01/2025 , work completed 21/01/2025
The trader replied (on 23/01/2025)
Thank you so much for taking the time to provide KJM with a Which? 5* review, it is very much appreciated. It is so pleasing to see that the entire KJM team worked to the very highest standards. Thank you again Mark & all the team at KJM
Installation of new front door
Customer Service
Quality
Value
The work was to remove our front door and to replace it with a made-to-measure high-grade composite item. Our fitter, Andy, was really very good. He arrived slightly early, which was totally OK and took the expected time to do the work. Installation was straight forward and he was neat, quick, professional and very friendly. It was a pleasure having him in the house. The product was exactly as ordered and the cost was exactly as quoted. It exceeded our expectations. The service included disposal of the old door, all parts to be recycled it seems - another positive. The work was inspected by a surveyor as soon as it was completed, enabling us to talk about how we found the service - another significant positive.
Customer in Hampshire Posted on 17/01/2025 , work completed 17/01/2025
The trader replied (on 21/01/2025)
Thank you for taking the time to provide KJM with a Which 5* review. I am pleased to read that we exceeded your expectations. Thank you again Mark and all the team at KJM
Excellent service as always!
Customer Service
Quality
Value
I have been a customer of KJM for over 30 years and have had windows, doors and a conservatory in that time. The service has always been exemplary as has the quality of the products and pricing has always been more than fair. The latest visit was to replace some glass and the fitter was as always friendly, polite and professional. Also, KJM managed to schedule us in before Xmas - which was very much appreciated.
Customer in Hampshire Posted on 18/12/2024 , work completed 17/12/2024
The trader replied (on 20/12/2024)
Thank you so much for both being a customer of KJM for over 30 years and the lovely review. It is also just as nice to deal with customers that have been with you throughout your history with KJM. Season greetings to you. Mark and all the team at KJM.
Conservatory conversion
Customer Service
Quality
Value
We are delighted with our new solid roof, Ben and Mike, the fitters, were friendly, professional and nothing was to much trouble. Any slight problems incurred were highlighted, discussed and completed to a high degree. They worked cleanly and cleared up as they went to keep the site as clean as possible. Special mention for the electrian, Dominic and the plastering team that sorted the inside of the conversion, all works were completed cleanly and to the highest standards. We were also consulted all through the build by Brian, can't recommend KJM highly enough, thank you for a great job.
Customer in Hampshire Posted on 19/10/2024 , work completed 18/10/2024
The trader replied (on 22/10/2024)
Thank you so much for taking the time to provide KJM with a Which? 5* review, it is very much appreciated. I am so pleased to see all the team provided you with the service level I expect. Thank you again Mark & all the team at KJM
Replacement windows in conservation area
Customer Service
Quality
Value
An excellent service from start to finish, from valuable initial advice (especially important on choice of windows as we live in a conservation area) through to the craftsmanship of the fitting and finishing. The actual windows themselves are superb quality and we could feel the difference in our home immediately. The team were superb and couldn't do enough to make sure we were happy.
Customer in Wiltshire Posted on 20/09/2024 , work completed 30/08/2024
The trader replied (on 24/09/2024)
Thank you for the glowing 5* Which? review on all aspects of KJM's service levels. We strive for perfection and total customer satisfaction on each and every job, so its a pleasure to read your review. Thank you again from Mark and all the team at KJM
Great team. Great product.
Customer Service
Quality
Value
Thank you KJM. We have just had a Compdoor fitted by the excellent team of Charlie and Josh. The product is top quality as expected from KJM and so much better than the ‘new build’ front door fitted by the developer. It looks good too. Charlie and Josh worked in the pouring rain but with great humour and so helpful with explanations. A great team and a credit to KJM.
Customer in Hampshire Posted on 07/09/2024 , work completed 05/09/2024
The trader replied (on 10/09/2024)
Thank you for taking the time to leave a 5* Which? review for KJM. Charlie and Josh continue to lead the way for KJM fitters with both their fitting and excellent customer service skills, so as you say a great team and a credit to KJM. Thank you again
Fanatastic Work, Great Customer Service and Value for money
Customer Service
Quality
Value
i have had 2 jobs done by KJM the first was an emergency pain of glass that they came round measured up and secured the window from the weather and did a great price for me to get it repaired. the second was a replacement door again the measured quickly and the fitted the door with fantastic workmanship. they are a very good company to deal with they are friendly with great customer service. the quality of there work is fantastic and they are very well priced.
Customer in Hampshire Posted on 04/09/2024 , work completed 19/06/2024
New front door and side windows
Customer Service
Quality
Value
Another professional job from KJM. We have just had a new Solidor front door fitted to our 1930's house. Firstly they gave us helpful advice on choosing the right door for our property and after a few visits to their showroom we made our decision on the door, glass and fixtures. The survey revealed the need for a steel lintel above the door and the subsequent building works were carried out beforehand causing minimum disruption and in keeping with the property. A very professional installation of the door and two side windows was carried out by the two fitters who kept everything very clean and tidy whilst they worked. This was the third time we have used KJM having previously had two bay windows and several other windows replaced by their team over the past four years. We are very pleased with all the works carried out by KJM, everyone in their team is helpful, polite and friendly and we would not hesitate to recommend this company.
Customer in Wiltshire Posted on 04/09/2024 , work completed 27/08/2024
The trader replied (on 10/09/2024)
Thank you so much for taking the time to provide a 5* review for KJM. I am really pleased that you continue to be a customer of KJM. The line "We are very pleased with all the works carried out by KJM, everyone in their team is helpful, polite and friendly" is what we strive for each and every day. Thank you again from Mark and all the team at KJM