Endorsed by Which?

KJM Windows and Conservatories

4.9

81 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

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
81 reviews
Customer Service
4.9
Quality
5.0
Value
4.9
Sort by
Fantastic team at KJM - could not fault them!
Customer Service
Quality
Value
Couldn't be more pleased with this - 2 bays, 5 windows and French doors installed with great care and precision, and at a very fair price. All the team at KJM have been brilliant: informative, meticulous, careful, skilful, cheerful and friendly. It was a pleasure to have you around. Thanks to Paul for initial advice, Andy for surveying, Josh and Aiden for all your hard work and Emma for coordinating. Sorry we couldn't give you better weather! Next in line is the new front door!
Customer in Wiltshire Posted on 14/11/2023 , work completed 02/11/2023
The trader replied (on 22/11/2023)
Thank you so much for taking the time to provide KJM with a 5* review As both the MD and owner of the business, the eight words below make me so happy. Its is so good to see you also mention all the team at KJM from that started with sales, then the surveyor, Emma and then the fitters "Brilliant: informative, meticulous, careful, skilful, cheerful and friendly" Thank you again from Mark and all the team at KJM
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
Brilliant work and price
Customer Service
Quality
Value
KJM recently installed triple glazed windows and doors very efficiently at the back and sides of the house. Very very pleased with the work completed, the total cost and the very friendly manner in which the whole matter was carried out and no pressure to complete the order. Thoroughly recommend KJM. Am now proceeding with getting the front of the house triple glazed. Many thanks once again
Customer in Hampshire Posted on 04/03/2019 , work completed 26/02/2019
Fast, expert, fair
Customer Service
Quality
Value
We had a problem with a PVC replacement door not locking. We asked locally and got recommendations for KJM. Called late afternoon to speak with the owner and received a promise for a visit the next morning. Mark turned up at 08:00, and by 08.10 had the door working again. Didn't stop there though. Spent the next 15 minutes adjusting everything and anything until the door fitted and worked better than at any time since it was fitted. After all that, refused to take a payment since he'd been at another appointment a short drive away. I can't recommend this group and it's boss highly enough.
Customer in Hampshire Posted on 30/09/2021 , work completed 30/09/2021
The trader replied (on 10/03/2022)
Little things can make a customer happy, I'm glad I managed that. I hope all is well at your end? Our conversation I will remember forever. You take care. Mark
New timber windows and back door for Victorian house
Customer Service
Quality
Value
I was keen to make my Victorian terrace house more energy efficient by replacing all the original single glazed windows with double glazed windows, but I also wanted to preserve the house's character. KJM recommended timber double glazed windows and a double glazed back door from George Barnsdale who manufacture high performance timber windows and doors. KJM did a detailed survey, submitted the order to George Barnsdale, and after a few months' wait for the order to be manufactured, KJM's fitters came to install everything: 6 sash windows, 4 casements and a back door. I was very impressed by KJM's team's helpfulness, knowledge and skill throughout this whole process, from the initial visit from Sales manager Paul to the installation by Josh and Aidan, with additional help from Jordan. The work was done to the agreed schedule and the cost was as expected. Josh and Aidan were very considerate during the inevitably dusty installation process and they have done a fantastic job. My new George Barnsdale windows and door look really beautiful and have been fitted with great skill and very impressive attention to detail.
Catharine in Hampshire Posted on 23/02/2023 , work completed 21/02/2023
The trader replied (on 25/02/2023)
Catharine, thank you so much for the comprehensive review about the process of dealing with KJM, product and installation. I am really pleased that you rate highly your high performance timber windows. Thank you so much again. Mark and all the team at KJM
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
Totally satisfied .
Customer Service
Quality
Value
Great work by Josh, Charlie and Ryan in replacing 12 windows over 4 days.Three very polite and engaging young men who worked really well as a team. Josh was very informative and ensured job was done to a high standard. Charlie did a great job of removing kitchen window without disturbing new tiles and tile trim. Any ( minor) issues I identified were immediately dealt with. Very reassuring that Simon, a senior manager, visited both during the job and immediately upon completion to check work. Flawless service from first contact to completion.
Customer in Hampshire Posted on 26/10/2023 , work completed 26/10/2023
The trader replied (on 31/10/2023)
Thank you so much for the 5* review. I absolutely delighted to read “Flawless service from first contact to completion.” Josh, Charlie and the apprentice Ryan are becoming legendary. Well done to all the KJM team and thank you again for taking the time to review us. Mark and all the team at KJM
12 windows fitted
Customer Service
Quality
Value
KJM have done a great job at a very reasonable price. The Sales Consultants, Job Coordinator and Fitting Staff were helpful and efficient from start to finish. We would definately go back to them if we need more jobs carrying out in their field.
Customer in Hampshire Posted on 29/10/2023 , work completed 27/10/2023
The trader replied (on 31/10/2023)
Thank you for the 5* review, I personally love words like "helpful and efficient" and I am really pleased that you would return to us. We do our best to remain competitive in what are tough times for the industry. As I write this another one of the big nationals failed last week. KJM remain strong and this is another vote for using smaller independent companies. Thank you again from Mark and all the team at KJM
Excellent work
Customer Service
Quality
Value
I had 3 new windows fitted last week. Lester & Liam worked very hard & efficiently. I am extremely pleased with the windows & their fitting. It was also reassuring to have Simon check on & discuss their progress with me every day.
Customer in Hampshire Posted on 30/01/2024 , work completed 25/01/2024
The trader replied (on 05/02/2024)
Thank you so much for taking the time to give KJM a 5* Which? review, it is very much appreciated. I'm pleased to see all the team provided the service that we strive for as a company. Thank you again Mark and all the team at KJM
Great double glazing company
Customer Service
Quality
Value
Kept in touch all the time from order to installation. Came when they said they would. Excellent workmanship and attention to detail Incredibly tidy and neat. Very courteous and respectful of things like plants around the windows Great products
Customer in Hampshire Posted on 04/03/2024 , work completed 01/03/2024
The trader replied (on 13/03/2024)
Thank you for taking the time to review KJM, it is very much appreciated. Key points for me that match the company ethos were words like "courteous, respectful, excellent workmanship and attention to detail" Thank you again for taking the time to review us. Mark and all the team at KJM.