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KJM Windows and Conservatoires At KJM Windows & Conservatories, we pride ourselves on our no hassle, no pressure approach to providing high quality home improvement products to the thousands of customers who have put their trust in us since 1982.
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KJM was formed in 1982, taking its name from the three founding directors Ken Hammant, John Creasey and Mick Burrell. Since it's inception KJM have won many awards for customer service. Originally manufacturing our own windows on West Portway Industrial Estate in Andover, the company concentrated on uPVC windows as we were unable to manufacture anything else.
At KJM we don't just sell "White PVC Windows" we offer a huge range including the handcrafted Beaumont & Residence 9 PVCu systems, Deceuninck Style-Line 70mm fully sculptured and bevelled windows from Veka & Profile 22 complete the PVC line-up. We also specialise in Timber & Aluminium windows. So when it comes to new or replacement double or triple glazed uPVC windows for your home, we are a window company you can trust.
Welcome to our conservatory page, we offer a comprehensive range of conservatories to suit the style of your home and your budget. KJM in Andover Hampshire can create something much better than a "plain white box" for your new light and living space. The new "Livin Room" can compete with an extension to add valuable light and space to your home.
Replacement glazing is a big investment for your home and at KJM we realise that quality is paramount. We use various ranges of uPVC window products, have our own highly trained window fitters for installation and ensure that we remain competitive with prices. In many cases a showroom visit can help you choose between a stormproof or flush sash casement.
Reviews (20)
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Jon Palin
Jun 17, 2022
Top quality professional installation from the team at KJM. We recently had new Bi-fold doors installed during a new kitchen installation and the KJM team worked seamlessly with the other trades to complete the kitchen replacement. We have previously used KJM for the replacement of all of our windows, doors, conservatory, soffits and gutters in previous years and have always found them to be friendly, professional, helpful and reasonable in costs. We would not hesitate to recommend using Paul, Mark and the team at KJM.
Paul Askew
May 19, 2022
After a collision damaged our bay window while on holiday, we called KJM for help, they couldn't have been more helpful! First they went round to the property and made sure the property was safe and secure, then Paul made a plan for repairs. Josh and Charlie carefully removed the entire bay and replaced the damaged parts, I can honestly it is as good as new! Absolutely delighted! Recommend KJM
Alastair Blair
Apr 24, 2022
I was very pleased and most impressed with the quality & finish of the windows and doors, plus I couldn't have wished for a more polite, friendly and competent team of installers. Definitely a 5 star installation.
Andrew Martin Bagg
Apr 19, 2022
Josh and Charlie came to fit our new bay windows on Tuesday. They arrived on time and were polite and professional. They worked hard all day and got the job done in good time. They cleaned up and left everything spotless. We would highly recommend this firm.
Amy Webb
Apr 15, 2022
I would recommend KJM Group highly. A local company where the customer is clearly at the heart of their business. From the start to finish those we came into contact with were nothing but courteous, helpful and reassuring. From Lee who talked us through all our options to the wonderful team of fitters, we felt listened to, respected and considered.

A particular mention has to go to Josh and Charlie who were with us throughout the whole fit. They were an absolute pleasure to have and a real credit to the company; knowledgeable, extremely polite and thoughtful and went above and beyond to help us out. Thank you and we won't hesitate to contact you again in the future.
Samuel Boothman
Mar 12, 2022
We have used KJM to fit all our new windows and they have been excellent. From the sales to the fitting, I would highly recommend KJM. Their customer service and product/fitting quality is the best I have seen. Very satisfied. A big shout out to Josh and Charlie who fitted our windows, very professional and friendly.
Anne Willcock
Mar 05, 2022
Second time of using KJM, excellent service from Charles the salesman to Josh and Charlie who did the install. The work was completed much quicker than originally estimated which was better than being promised a date just to have it put back. Josh and Charlie were quick, efficient, courteous and tidy. Would always recommend.
William Brewer
Mar 03, 2022
Why bother going anywhere else! Josh and Charlie turned up exactly on time did a great job of removing old 1970 doors and very efficiently replaced with an excellent patio sliding door - first class job done by a first class company. Very polite, clean and efficient - as I say why bother going anywhere else, I believe you cannot beat this company for efficiency, and product quality. Well done Josh and Charlie - well done KJM. Very highly recommended
Ben Gandy
Mar 03, 2022
So pleased that we went with KJM to fit our new windows and doors. Josh and Charlie worked tirelessly through torrential rain to get the whole job done in 2 1/2 days and were a pleasure to be around. I really appreciated the fact that they were able to problem solve on the fly and keep us in the loop at all times. Bravo chaps. A very good experience.
Chris Blake
Feb 10, 2022
We used KJM to fit our new French Doors and the service supplied by the fitters Josh, Aden and Will was excellent. They explained each process and any questions asked was no trouble to them. The new addition of the French Doors complements our home and would highly recommend KJM
Chelsea Du
Oct 22, 2021
Stayed at a house where the windows were KJM triple glazed - very warm. Would debate if I should have the heating on in my own house but it wasn't needed there in mid autumn.
Rob Jack
Sep 13, 2021
Excellent knowledgeable support for all queries as we look at various manufacturers windows.
P. R. W. Clann
Aug 05, 2021
Replacement conservatory roof - excellent service and quality work. The office staff are very helpful and and the onsite teams are on-time, efficient, skilled, and very tidy. I recommend KJM very highly. Robin W, North Waltham.
Craig Fulford
Jul 15, 2021
From start to finish I have received a great service from KJM. Even through Covid when all the other window fitters were not back up to full speed! KJM delivered on time and were very responsive when ordering windows. I am very happy with the windows. Mark and his team have been great! Thanks you
James Giblett
Mar 29, 2021
KJM recently installed new windows and doors at our property. Their service was excellent from start to finish. Installation was completed efficiently and to a very high standard. We are delighted with the final result and wouldn't hesitate in recommending KJM to others. Very satisfied customers.
Claire Welburn
Feb 28, 2021
The installer was very friendly and chirpy, even in the freezing cold (we had snow the night before). He cleared the snow before he started and tidied up well before he left, leaving a very well installed door. He was happy to answer any questions i had and made sure I was happy with the operation of the door before he left (checking I could use the lock etc).

Very happy with the service at KJM, from point of contact, communication regarding our order and the final install. I have already recommended them (and booked) for my fathers new windows.
Deena House
Feb 19, 2021
Having moved recently, it was necessary for us to replace windows and a front door. We had no hesitation in instructing KJM to supply us having used them in the past. Excellent communication, fitting, and after sales service, was first rate. Highly recommend.
Karen Currie
Sep 24, 2020
Thanks to KJM we have a lovely Live-In room (conservatory) - we live right on the beach so we are often hit by extreme weather conditions & we've never had any issues with the workmanship of our build. Great service - polite, courteous, professional - and excellent job delivered on time and on budget
Chris Surawy
Nov 04, 2018
Three years on and we are still bowled over about how perfect our live-in style conservatory is. 50% blue glass lets the perfect amount of sun in for us and my plants, brick pillars and back wall for more of a "room" feel. Well insulated for winter use (see pic). Double doors for access and summer days. Dual opening windows and of course a cat-proof electric skylight.

The value of a company can be measured more by when things go wrong than when they go right - a few months after the build we had some top bricks on the pillars come loose. Their boys fixed them within hours. HOURS. I actually emailed from work asking when they might come to do them and they had already completed the fix! There is a conservatory that was built with the house VAT-free nearby at about the same time.

It is your basic greenhouse-on-low-wall; it is coming away from the house wall, the guttering leaks onto the fence which is now rotting and after speaking to them, it is a hot house in summer and a heating nightmare in winter. The entire process with KJM was pleasant. The salesmen was unpushy, tolerated our changing ideas, even made some top ideas himself (house window was just in the way of the width, area wise, why not use the saving in the length? - worked out well).

The architect they recommended for us was great, the boys who did the hard work were great. Overall, I cannot fault KJM. Yes they are not the cheapest brand but you get what you pay for and in my opinion I got a Rolls Royce for BMW prices.
Jane Furber
May 04, 2018
I have been delighted by the service from KJM Group Ltd. We saved for years for astragal bar windows to make the house pretty and improve noise reduction. Our initial appointment was only 45 minutes compared with 3.5 hours from a national competitor. Once our requirements were discussed our KJM salesperson took measurements and left clear instructions that the price would be fair and the details sent to me with drawings via email shortly after.

I had a hassle free service at a fair price and I couldn't sign up on the spot even if I wanted to. This was refreshing compared with the industry hard sales norm. Details such as symmetry and floating mantles were also discussed which made such a difference to how the windows looked. Once I confirmed I wanted to proceed (with no follow up pressure but quick replies to my questions) I was visited again to confirm final choices of fixings and privacy glass.

I felt relaxed to choose and everything was clear and well documented. After a few weeks we had the windows installed on the week planned. I was amazed at how much better the house looked. A few tweaks needed to be finished (a couple of astragal bars to be changed) and this was arranged over the coming weeks with a regular contact until I was happy that the job was complete and to the standard I expected.

I couldn't be happier with my windows and the thickened sound glass in the double glazing along with quality seals has made such a difference to road noise. We have even moved our bedroom back to the front of the house since they were installed. Every staff member of KJM has been friendly and helpful throughout. I would recommend them if you are in their catchment area. 5* service 5* quality 5* value for money!