Experience - Diamond Double Glazing


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

No Cowboys

No  Cowboys

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