Endorsed by Which?

KJM Windows and Conservatories

4.9

87 Reviews

Opening Hours
Today -
  • 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

All reviews are verified as being genuine and a true customer of this trader.

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

4.9
87 reviews
Customer Service
4.9
Quality
5.0
Value
4.9
Sort by
Window Replacement
Customer Service
Quality
Value
KJM replaced all our windows and doors some 27 years ago and they finally required replacing with modern glazing. It was therefore an easy decision to return to KJM as a tried and trusted local business. We initially replaced our aged front door - the change was immediately noticeable. As a result we decided to replace all our old windows. We discussed at length all our options and decided to go with the triple glazing option despite the obvious increase in price as a result. There was a delay in fitting from order but that was down to us being away - fitting could have taken place 4 - 6 weeks from the order placement otherwise. We had initially been told that turnaround would be about 12 weeks but I think that is a worse case scenario as in reality turnaround was much quicker. It took two days to remove and replace all 8 window units. The fitters where on-time both mornings, very professional, tidy and quiet - apart from the noise when actually removing the old units. We were a little concerned that we might have had to redecorate around the window frames as a result of the work but we needn't have worried as no damage was sustained and the units fitted perfectly. They left no mess and even spotted two minor flaws in two of the glass units which were replaced within three weeks. We are happy with the result and have no hesitation in recommending KJM.
Customer in Hampshire Posted on 10/10/2023 , work completed 12/09/2023
The trader replied (on 27/10/2023)
Thank you for taking the time to provide such an extensive review on KJM. Having been with the company for 40 years, it is becoming more common to see returning customers who are updating their windows and doors with modern energy efficient glazing. The irony is not lost on me when I consider that I sold you the original windows and the fact your new windows were installed by a team including my son who was not even born on our first visit. KJM’s customer service and attention to detail is why we are still considered by many through recommendation. Thank you again Mark & all team at KJM
Excellent Replacement Windows and Affordable
Customer Service
Quality
Value
We found KJM via Google whilst searching for 4 replacement windows with integral blinds. We visited their showroom and viewed some samples at the same time they give us a quote for the work. We set a date, for a visit, for them to measure up (check my measurements). Thankfully the original figure didn't change for the worse and we booked in the job. On the fitting day the fitters turned up early and had the job completed by around 3.30pm. I must admit from start to finish their service was excellent. I felt that they knew what they were doing and didn't hide anything from me. The fitters workmanship was super. They were friendly, helpful and and discussed the work as it progressed. My house is very old and getting the windows square didn't seem to cause an issue. All in all my wife and I are very pleased with the result and we have had lots of admiring comments from my neighbours. Would I recommend KJM to any prospective customer - yes I would in a flash.
Customer in Wiltshire Posted on 22/02/2024 , work completed 15/02/2024
The trader replied (on 24/02/2024)
Thank you for the comprehensive 5* review of KJM. If nobody read anything but the last sentence, it sums up what we strive for as a business. "Would I recommend KJM to any prospective customer - yes I would in a flash" Music to my ears. Mark and all the team at KJM
Excellent service and installation
Customer Service
Quality
Value
We are delighted by the new windows: the team installing them was very professional and took a real pride in their work. There was one slight moment with a piece of broken glass but it is being sorted and was well managed.
Customer in Hampshire Posted on 05/02/2024 , work completed 25/01/2024
The trader replied (on 14/02/2024)
Thank you for taking the time to review KJM, its is very much appreciated. It is good to see the words "professional and pride" in your review. Thank you again from Mark and 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
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
Great aftercare
Customer Service
Quality
Value
Kerry arrived on time, was friendly and efficient and did a great job. I would definitely recommend
Customer in Wiltshire Posted on 22/04/2025 , work completed 22/04/2025
The trader replied (on 28/05/2025)
Thank you for taking the time to review the service Kerry provided. Friendly and efficient are words I like to see. Mark and all the team at KJM
Front door and 10 windows replaced
Customer Service
Quality
Value
We are extremely happy with the work that all of the team at KJM carried out recently, from the initial contact, right through to completion. As well as the windows and door being replaced, we also needed to have a lintel fitted. Colin did a fantastic job with this including a perfect match for the bricks. The rest of the team, Lester, Shae, Andy and Liam worked tirelessly and did a brilliant job. They were all very polite and friendly. Nothing was too much trouble. Simon, who was the Site Manager, visited regularly throughout the works and any issues we had were completely resolved and any questions we had were answered. The works were carried out on budget and within schedule. We would thoroughly recommend anybody to use KJM and we would not hesitate to use them again in the future if needed.
Customer in Hampshire Posted on 21/11/2025 , work completed 16/10/2025
The trader replied (on 30/01/2026)
Thank you for the comprehensive review and my sincere apologies for the delay in replying to it. The words "We would thoroughly recommend anybody to use KJM and would not hesitate to use them again in the future" is all I can ask for from the team. Thank you again Mark and all the team at KJM