About us

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DM Window Solutions Ltd is a reliable partner who provides a wide range of windows and doors solutions.

When working with us you may expect a friendly attitude combined with professionalism as well as an innovative approach towards your goals. Your final satisfaction is at paramount importance to us. Our pledge remains the same – You will always get more than you expected.

Dariusz Matyja Zuzanna Stepniewska DMWindowSolutions

Our Team

Our small and dynamic team is what makes DM Window Solutions a special place to work.
Hard working and committed to improving customer satisfaction.

Dariusz Matyja


Zuzanna Stepniewska

Managing Director

Wioleta Spychaj Javaid

Office Manager

Magdalena Tlalka

Project Assistant

Rafal Kedzierski


Adam Wakuluk

Surveyor, Senior Installer

Tomasz Laskowski


Environmental Responsibility

Timber we use for our windows and doors come from well managed, sustainable forests and are specially selected for their high quality and fine grain. They bring natural beauty, energy efficiency, warmth and long durability into your home.

Softwood and Oak

We use European pine as softwood and oak as 1st class hardwood. They come from Polish National Forests.
Logging in Polish National Forests takes place in accordance with international principles: preserving the sustainability of forests, sustainable development and conservation.
This is confirmed by the regional directorates being awarded with relevant certificates.
All our timber comes from FSC certified sources (please, see the Certificate attached). We ourselves are in a process of organising the FSC Chain of Custody certification.
If the environmental issues are not indifferent to you, you should pay attention when choosing the product.
Going for our timber windows and doors means that you care deeply for the forests and the world we live in.


We use meranti (Shorea) – 2nd class hardwood which comes from South-East Asia.

Not many windows & doors suppliers in UK can pride themselves on having this timber certified to prove that it comes from sustainable sources as many species of Shorea are under threat of extinction. We are proud to announce that we cooperate only with certified timber suppliers. We have carefully chosen the meranti merchant so our business does not harm the environment and we make sure we do not buy from unethical sources.

Accredited Installers


You might be surprise to find out that despite 20 years of existence on the UK’s market we have kept such fresh attitude and young spirit. We would like to reassure you though, that during that time we have learnt a great deal and our business wouldn’t be where it is now and still growing if we haven’t excelled in our clients expectations. Therefore, reliability we promise has solid bases.

Dariusz Matyja founded DM Contract Solutions 20 years ago. At the beginning the company was focused mainly on specialized construction services. Although the range of services was limited and experience not as rich as right now, the foundation was laid down on the same core values which remain unchanged today.

Since 2006 we operate as a Limited Liability Company offering much wider range of services.

Since 2009 we offer premium quality windows and doors in timber. On top of that, we are especially proud of undertaking new and unique projects involving bespoke glass and aluminium structures.

From 2010 we widened our windows and doors offer by aluminium products including flat roof skylights.

In 2010 we tightened our business relationships with Wimbledon Builders Merchants, IBB Building Wholesale in Park Royal, A Builders Store in Brentford, DoBuild Direct in Kenley and many more. All retailers have showrooms with a range of our products displayed there.

In 2012 we changed our company’s name to DM Window Solutions.

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Client Testimonials

Don’t take our word for it – here’s what our clients say:

I just wanted to say a huge thank you to your installers. Adam and his colleague (I’m afraid I forgot his name) worked non-stop from the time they got here until the time they left and they were so polite and helpful, they have done an amazing job fitting the windows and the external finish is excellent. I have had a lot of experience with different trades people over the last few years and it’s rare to find such professional people with such attention to detail!
The windows themselves also great quality and we are very happy with them. Thanks again.


Brafferton Road,

“I wanted to thank the team who did a great job yesterday. They were very effective, worked well as a team and were good to have around. Very polite and tidy too! I am very pleased we waited for the right time. Thank you Joanna for arranging this. The window is very well made, looks very good and will save energy. Very pleased and that is why I wanted to buy more windows from your company. If I did go ahead i would want the same guys who came yesterday!”


Stoke Newington, London

“It was very nice to meet you both this morning and thanks again for showing us your windows and doors despite Emma and I turning up unannounced! Thanks very much for the great service you’ve provided us – we were very impressed with your windows and doors and the way that you were able to show us around. (…) As we are still planning on getting other windows replaced in our house, we’ll certainly keep you at the front of our minds in the future. Best wishes, Adam”


Norwood, London

“The flat roof window from you looks fantastic and clients are very happy. Thank you for quick order processing and great quality product. Surely, I will get in touch with you once I need another product from your range”


Cottingham Road, London

“Ian would like to say he was very impressed with the product and team.
Thank you.”


Lambeth, London

Very happy with the skylights…..the installers where like ninjas! Nobody saw them come in….just the glass magically in place. Cheers, Tom


Stoke Newington, London

“Thank you for the comparative quotation. As you warned me, the slimline windows are a good bit more expensive than standard double glazing. However it is useful to know that you can manufacture both. (…)Thank you again for your time on Tuesday. It was good to see the windows and meet the team. With best wishes, Caroline”


RIBA architect from Wimbledon, London

“Yes, your fitter was very helpful on what is a difficult project, and we are very pleased with the quality of the end result.
I do have some other rooflights needing pricing, so will forward them to you shortly.
Thanks again for your help and patience.


Blackheath, London

  ”Now that winter is about to arrive and we already had a couple of cold windy days I’m monitoring the windows and definitely found a huge improvement compared to before. Actually Stephan made me noticed, he came to have a look after he received your quote and he was quite impressed.”


Clapham, London

“The windows and installation look wonderful, thank you to all for doing such a smart job”


Mortlake, London

“The client is very happy with the quality of the windows. Thank you, Dorothy”


Interior designer from Chelsea, London

“I would be happy to recommend your company and your windows. Sam”


RIBA Architect from Twickenham, London

“As always, I know that you take pride in your work and that if any problems arise you will address them. Kind regards, Sam”


Kingston upon Thames, Surrey

“Thanks so much DM Windows and I always recommend you to friends!”


Whitechapel, London

“I am very impressed and satisfied with the quality of the windows and the way in which they were installed. Regards, Ron”


RIBA Architect from Wimbledon, London

“DM Window Solutions actually supplied fantastic windows within the specified time – and Betty was wonderfully helpful. We’ve installed four of the eight ordered, and so far… very good. You’re welcome to pop by and have a look…. Lyndsay”


Kingston upon Thames, Surrey

“I also wanted to provide some feedback on the installation this week – Greg was very impressed by your senior fitter Adam, and said that he was very polite, professional and efficient. We were very pleased with his (and his colleague’s) work. Kind regards, Jennifer”


Wandsworth, London

“(…) Thank you for the job well done. Your workers have been very thorough and we are pleased with the result. Many thanks for all your help during these past few weeks. Best wishes for the company, Brygida & David”

Brygida & David

Cheam, Surrey

“I feel very positive about recommending you. You are welcome to give my name to your potential customers and I will be happy to speak to them about my experience in working with you.
You were recommended to us by an architect we collaborated with in the past, so this approach obviously works. Kind regards, Margaret”


Interior designer from Battersea, London

“I recommended DM Window Solutions to a friend of mine because of all 8 companies I approached for quotes about the windows, you were prompt, informative, efficient and did not try to “sell” the products.
Excited about new windows!”


Clapham, London

”I’m delighted with the new windows and doors (what a difference!) – and overall very impressed and so pleased with the quality of work, the respect shown to my flat, the cleanliness, and when I met the guys one evening it was encouraging to see how professional and friendly they are. (…)Very many thanks to you all. Best regards, Kate”


Earls Court, London

”I’d like to say that I am very impressed with the quality of my new windows. They are beautiful! Also, the fitting team was very polite, left the rooms very clean and tidy and they did excellent job. Thank you very much, Lucy”


Fulham, London

“The installation of the windows was not nearly as disruptive as I had feared and the work was done with speed, cleanliness and respect. Over the weekend I have had time to look at the windows quality and have been able to appreciate their effect.”


Brixton, London

“I was going to call you today with regards to the windows you supplied, the windows are in a word ( perfect ) our client is very happy with the finish so that makes happy all around.
Thank you for getting the windows on time and we look forward to using you again in the near future.”


Developer from Wimbledon, London

A quote from a letter from our Client to his builder:
“Dear Jack,
Caroline and I wanted to thank you for introducing us to DM Window Solutions. Pawel and his team have been excellent and we are very happy with the quality of the product.
We would definitely recommend them to you for future work and indeed we hope to use them again when we build our Grand Design! (With you of course!)”

Dominic & Caroline

Notting Hill, London

“Regarding the windows, we’re very pleased with them – they’re smart, feel bomb-proof and have made a huge difference to the heat retention in the room. They also do a great job blocking out sound from the road and the air!
Adam and team who did the installation were polite, enthusiastic, leaving the place immaculate.
We’ll be looking in to replacing the living room windows next month.”


Shoreditch, London

“The windows which did go in are nice! And your crew is very good to have on the job.
Look forward hearing from you with possible new dates for the rest of the installation.”


Brixton, London

“The windows are now installed and look very good. You were most efficient and helpful.
Thank you very much!”



“The instalators who came to fix the window done outstanding work, leaving room clean and tidy and they fixed window very quick without any issue.”


Surbiton, London

“Thanks to you – the window is excellent. A thoroughly professional job from start to finish – thanks.”


Lambeth, London

“The doors and windows are still splendid. Whenever somebody asks me if I know of a good window company, I will certainly recommend DM windows.”


Colliers Wood

 ”The window looks great. Very minimalist which is just what we wanted. Worth waiting for!”



“I have your windows and doors at my property and would certainly recommend them to friends/neighbours etc.”



“I wanted to thank you all for our skylight, it is in and looks beautiful.
Thank you too for all of your help with our order.”



“First of we would like to say how delighted we are with our new windows and would especially like to thank Adam and his team again for the expert installation.”


Nyetimber Copse, Horsham

“We are very pleased with our new skylight! Thanks for your help. It looks lovely”


Wimbledon, London

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