Experience - Diamond Double Glazing


Below is a collection of peoples' experience with Diamond Double Glazing or visit our page on No Cowboys!

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"I am delighted with the job that Diamond Double Glazing did retro fitting double glazing to my timber windows.
No mess, no more weeping windows and a lot quieter + warmer!"



"Very happy with my experience with Diamond Double Glazing. Colin was always quick the respond to any
questions and queries (including my initial request for a quote) and he and his team did a great job retro fitting my
existing timber windows. The whole process was very quick and easy and I would highly recommend them without
any hesitation."



"Colin and his team completed a large double glazing job on our sunroom. Colin came round and quoted quickly
and took the time to explain the different options to us. He also dropped round glass samples so we could evaluate
the different types of tint options. His quote was well priced. The work was carried out in 3 days and Colin kept us
in the loop with progress the whole way. Overall I found Colin and his team to be hardworking, professional and a
pleasure to deal with. We would definitely use them again for double glazing on our house."


"Colin and the boys at Diamond Double Glazing have retro double glazed quite a few windows in my house over
the years and each time listened to what I wanted to achieve, been efficient, prompt installation and happy to come
back if anything needed re-adjusting. Looking forward to the next set of windows with Colin. Fully recommend."


"The great thing about Diamond Double Glazing is that they price every window seperately so I could choose to do
windows to my budget. I got Colin and his team to do the lounge room first and can't wait until they come back
after Xmas to do the bedrooms. It makes such a difference and I'm looking forward to the saving on power next
winter. Would recommend them to everyone."



"I'm doing a full house renovation and unfortunately before finding Colin at Diamond I had to deal with a few other window companies who let me down (no-shows, proposing something not code compliant, 4 month install waits). I
immediately had confidence in Colin, he was upfront, honest, did exactly what he said he would, when he said he'd
do it, and was easy to communicate with. The price was competitive and he worked with no fuss around weather
and our builders. And the windows look great: a really high quality product, installed with care."



"Diamond double glazing gave a reasonable quote, were efficient and kept in communication throughout
the process. Colin was wonderful with advice but never pushy and went the extra mile to be helpful on
this job. After some delays in sourcing the windows (which was not the fault of Diamond double glazing,
the windows were replaced quickly and effectively with good finish. I sincerely recommend Colin and his
highly professional team for all retrofitting work and glazing."


"Colin and his crew installed double glazing throughout my house and installed new french doors. They
did a great job and I am very happy with how everything went. There was good communication from
Colin and they were nice to deal with. Highly recommend this company."


"Colin was a pleasure to deal with and gave me sound advice. He double glazed two sets of sash windows
and a set of French doors for me. The job was done quickly and efficiently by his friendly team and the
workmanship was of a high standard. Attention given to detail resulted in an excellent finished look. "

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David McCrone

"We arranged for Diamond Double Glazing to provide and install five new PVC Double Glazed windows
in our home. We were very impressed with the work Colin and his team provided. The new windows are
excellent, and we also consider the workmanship and friendly service provided by Diamond Double
Glazing to be excellent. Colin was also able to expertly fix an old ranch slider for us."



"Colin and his crew were excellent. They turned up when they said they would and got the job (retrofitting double glazing to one bedroom - including replacing 2 rotten windows) done quicker than expected. They communicated really well throughout the whole process and kept me well updated. At the
point of getting the quote, I advised I could not afford to do the whole house at once and they were still
happy to quote for the whole house and itemised each room. This made it easier to decide if I was going to do one room, or a couple at once. I highly recommend them and will be using them to do the rest of my


"I don't normally do reviews but this work we have done has been EXCEPTIONAL After more than a
few "no shows" from others who were booked to come and quote, we really feel we hit the jackpot. A real
"straight down the line" guy, who is honest and tells you what is needed. Colin then gave us a variation of
types of glass, costs etc and what would be good in terms of suiting the property. He was on time, polite,
got the work done quickly to a VERY high standard. The work has made such a difference already to the
warmth in our home. Have booked Colin for more work when he can fit us in. I can't recommend enough!
Thanks so much for your high standard of customer care Colin."


"Colin was really good to deal with. Clearly busy guys, with lots on, but once our job started it went
really smoothly and painlessly."


"Colin and team done fantastic job in PVC double glazing all our bedrooms and bathroom. 3 months so
far every day enjoying the result. The quote is comprehensive and very reasonable. The job carried out
professionally and at high standard. "



"Colin removed some old horrible patio style doors for us and replaced them with a lovely large double
glazed window in our kitchen, it has turned what was once an eye-sore into a wonderful feature in our
home, everything was taken care of including all paint work around the framing and took away all the
rubbish. Will definitely be using Diamond Double Glazing again and highly recommend them!"


"Colin repaired a couple of munted sashes and suggested a much better (and cheaper) option than a
builder had suggested to us. He provided options and outlined the pros and cons of each. Once we agreed
on the way forward he was prompt and professional in performing the job, and went above expectation by
filling and painting the window (sash and mullion) also installation.
I wouldn't hesitate to use Colin again in future and I don't doubt that I will."


"The uPVC double glazed windows we had installed in our house are absolutely fantastic, we could feel the difference immediately the heat now stays in the house and the noise reduction is significant. Colin and his team did a superb job and I have no doubt in recommending Diamond Double Glazing, great job guys!"


"Great job from start to finish. Good comms, competitive pricing, left the work area tidy and windows look great. This is the second time I have used DDG and will use them again for our next round of double glazing."



"We have previously had PVC double glazing windows installed by Diamond Double Glazing and have also used them for other glazing repair work. We have just had another PVC window installed by them, and as previously we have found their customer service, workmanship and product to be excellent. "


"Colin was great to deal with, was flexible with times coming out to measure and quote for our windows, gave us lots of options and explained the differences, and when the time came to do the install the work was done in a timely fashion to a high standard. The uPVC framed double glazing he installed looks great in our house and looks and feels like a high quality product. Would thoroughly recommend and will definitely go back to Colin if we want any other work done. Thanks."


We were very happy with the expertise and speed that Colin achieved with the installation of our double glazed windows and doors. He was always approachable with the many changes we imposed along the way and was always willing to help us make good choices.

Thanks heaps for all your help guys, and the benefits are definitely showing with heat reduction over summer and retention in the cooler weather starting now

Wayne and Kirsten Morgan

Colin came and gave us a very reasonable quote before starting work replacing our regular windows with double glazed windows. He worked in a timely manner and we were more than happy with the quality of the product


Colin Steadman gave great service, he gave a written quote, and was exact with when the work would be completed. Also I was impressed with his advice which he gave freely. His work was thorough, and I would highly recommend him, actually I have recommended him.


Colin did a great job. Got my whole house double glazed and it makes an enormous difference! I appreciated how he broke the job up so that the house was always secure and never a mess


Great job well done. I am planning to have more windows double-glazed this year and would definitely get Colin from Diamond Double Glazing to do this. He is very experienced and completed job was excellent

Angela Offord

Colin did a great job on our double glazing. He spent time on the retrofit and the result was really impressive. He was reliable and communicated well throughout the job


Colin completed a number of property maintenance jobs at my home in Petone. He was very reliable, efficient and his work was of a very good standard . He also charged a reasonable price as quoted.

He came around straight away on one occasion to assist me with an unexpected problem installing a dishwasher . Both Colin and Bev are very pleasant and friendly to deal with. I have recommended Colin to a friend who is also very satisfied. I will definitely use Colins services again.


Colin is just the opposite of a cowboy. On time, on budget, high quality and an all round really nice guy to deal with


Colin did a job for our business and he was timely in his work, very knowledgable about all our options and his quote was very reasonable.

The job was done extremely well. I would recommend Diamond Double Glazing to anyone needing the services they offer, and will be recommending him to my friends and family


Colin was very easy to talk to and fully understood our requirements. He was able to offer the perfect solution for us and completed the work to a very high standard, in an acceptable time-frame and at a good price


Excellent builder. Reliable and a very good communicator. Colin seeks cost effective solutions and we would highly recommend Diamond Double Glazing to others seeking a wide range of building services.

Mark and Janet

I have been thrilled whenever I've called Colin to take care of a job needing doing around the home - and I mean 'take care' as he took charge but consulted by giving me informed choices and made everything easy.

The end product - superb. Colin has succeeded where others have failed at providing a solution so I am one very happy customer. Seems to be able to turn his hand to anything!


Fantastic - the work was done to a very high standard. Had an issue with the glass (not Colin/Diamond's fault) for one of the windows, but was fixed up with no problems or cost.

Did have issues with the weather slowing things down, but that's Wellington for you! Colin is also great to deal with - doesn't push you into decisions, just gives you the facts, and lets you make the final choice. Would happily recommend.


Colin repaired a couple of munted sashes and suggested a much better (and cheaper) option than a builder had suggested to us. He provided options and outlined the pros and cons of each.

Once we agreed on the way forward he was prompt and professional in performing the job, and went above expectation by filling and painting the window (sash and mullion) also installation. I wouldn't hesitate to use Colin again in future and I don't doubt that I will.


Colin and his team did a fantastic job retro fitting 3 windows to double glaze them with safety glass. The quality of the work is outstanding. The work was done in a professional manner and the service was friendly.


Easy to deal with, did an excellent job. Very pleased with the result


We were very happy with the quote that Colin gave us. He then followed through with a very good job on our bedroom windows, keeping in mind our requests and last minute changes.

He then followed up after the job to ensure that we were still happy and he promptly came to redo the beading that loosened due to us opening the window too soon


Colin was very quick and reliable; he never got in my way which was good for me as I don't work and spend a lot of time around the house; my daily routine was not upset in the least.

I was very happy with the partition he put up between the kitchen and laundry, also the loft access ladder. Other jobs added to the quote later were done for a very reasonable price. I wouldn't hesitate to use him again.

Peter from Stokes Valley

So happy with my windows and my experience with Colin he did a great job from the first call I made to him to the end result. Looking forward to getting the rest of my windows and doors done by Diamond Double Glazing in the not to distant future.

Lyn from Petone

Just want to say thank you so much for fixing the various deteriorated sections of woodwork on the outside of our house and also coming up with a solution for the problem at the back of the carport. You were a gem to work with, your experience, thinking outside the box skills and flexibility was invaluable.

Rachel and Alan from Belmont

Thank you Colin for the once again wonderful service, really appreciate the prompt attention to the job you did for me.

Pam from Miramar

Just had double glazing installed by Colin of Diamond Double Glazing fantastic result and great service. Thoroughly recommend these guys, especially as things get chilly!

Paul from Waterloo

Colin did a superb job of fitting and hanging a door in my house in a space where there'd never been a door before so the job required a bit more work than just hanging a door.

I'd contacted two builders previously to have the job done and neither bothered to reply to my voicemails. When I rang Colin he came up the very next night to measure up and see what the job needed. I had the quote the next day and two weeks later he arrived to do the job. I really appreciated his promptness, efficiency and friendliness.

The job he did could not have been better. It was professional and efficiently done and it's made the world of difference to the heat retention in the room. The price was extremely reasonable and I really appreciated the time he took to make sure it was perfect.

I'd have no hesitation in recommending Colin and Diamond Double Glazing to any of my friends or colleagues at work.

Sue from Wainuiomata

I recently engaged Colin to prep and paint the exterior of my brick and timber house in Waterloo. The house had not been painted for over 30 years and required a great deal of prepping, particularly around windows.

Colin performed this work admirably, with all the care and attention to detail I expected. He kept to a schedule, kept me informed and made sure I received value for money in the selection of prepping and painting products to use. Colin was also able to turn his hand to repairing timber and windows.

I was so pleased with the work, I got Colin to also paint some of the interior of the house. I am very pleased with the results and would recommend Colin to anyone requiring a quality professional result for their painting jobs.

Malcolm from Lower Hutt

These guys are just AWESOME! Colin is such a great guy to deal with.

The job was done, as per order. No fuss, no mess, no hassle. We're looking forward to a warmer winter this year, with much less colds and flu. And already we're sleeping much better with the drop in noise from passing cars.

If you want a quality job done, well, I doubt there's anyone better in the region. Go with Colin and Bev at Diamond. You won't regret it. We certainly don't.

Michael from Porirua

We had some shelving to be fitted in our shop, and also some repairs to be done to our roof.

Colin from DDG was in on­time and completed the job beautifully without needing any supervision or checking. He also was able to make a minor design change to rectify a problem with the shelves that would otherwise have meant problems for us.

Colin did a fantastic job. If you want an excellent service with genuine nice people then they are the ones to deal with.

Lynne and David from Waterloo

Colin was very prompt and gave helpful information about double glazing and the services he could offer. Really good value for money and we are very happy with the results.

I much preferred Colin's relaxed and friendly approach to that of other companies we approached. Colin got and respected that I was a busy mother with young children and he didn't waste his or my time blinding me with science or giving me a hard sell. He was however really professional and happy to answer any questions or queries. I really respected that.

Elizabeth and Gareth from Alicetown

We had just bought a 80s house that required some repairs to make the house warmer. Colin came to scope out the work and gave us a reasonably priced quote. He is a true professional who always came on time and did a marvelous job. After the work he did not overcharge us and in fact gave me valuable tips on house maintenance.

As this is our first home my wife and I are very grateful for his proactive work ethic and are happy with the result. Would happily recommend to our friends and family.

Aditya Rao from Newlands

We would like to say how pleased we both are with the latest job Colin has done for us at our home, as usual a professional job carried out in a timely manner. Its nice to find a builder we can rely on to do the job well, and without supervision.

We would be happy to recommend him to any future customers wanting work done around their house.

Roz and Ross from Ohariu, Wellington

I highly recommend Colin for any double glazing requirements. His workmanship was of the highest quality and the whole process of replacing our windows was done with the minimum inconvenience to us. The warmth of the house has been greatly improved and now there is no more condensation. It's definitely all been worth it.

Jason from Korokoro

Colin has recently installed a sadly overdue door for me. Colin and I discussed my expectations, and he then made suggestions. He discussed the options in clear terms. The new door is substantial, double­glazed, and secure, and ­ to me ­ several light years away from the old one.

I dealt mainly with Colin but also with Bev. They were both straightforward and prompt in answering my questions. I felt free to ask follow­up questions about anything I was unsure of (and did). The general approach was helpful, practical and flexible. We made changes along the way, and still stayed within my budget.

I particularly appreciated Colin paying a visit after the installation, to make sure I was comfortable with the intricacies of a modern door!

Based on this experience with this firm I would be confident in using it again and recommending it to someone else.

Ainslie from Maungaraki

We would most certainly pass the word of your very good service in fixing our window problems.

We found it most refreshing to find we did not have to wait long once we arranged to have it done and we also enjoyed the friendly service.

Thanks once again.

Gabriel and Valerie Haldezos from Petone

We appreciated Colin’s wealth of knowledge and expertise. Colin provided us with different options explaining the pros and cons and working within our budget. His workmanship is to a very high standard and during the process Colin kept us well informed. We would certainly recommend him as an effective and quality tradesman.

Gwen from Avalon

Get in touch with Colin & Bev to get a free quote