Our Company

Reflecting excellence throughout South Wales since 1991

South Wales glazing Experts

Established in 1991, our stand-alone reputation for excellent quality, craftsmanship and customer care has made BWM one of South Wales’ leading double-glazing companies.

Specialists in manufacturing and installing industry leading quality uPVC, aluminium and composite products, including award- winning architectural design projects.

If you would like help choosing the right product for you use our contact form below or speak to a member of our helpful team today by calling 01443 844 240

Composite Door Installation Cardiff South Wales


Brilliant service and very happy with the work. The team were fantastic and would highly recommend them!!
Gareth - 16th December 2019
Very efficient fitters who always came when they said they would.A bonus these days! A good product.
Mr & Mrs Morgan - 7th December 2019
The window fitters were very polite and helpful nothing was never a problem whatever we asked of them they just obliged and did what we asked. We would highly recommend them to anyone who is looking for new windows and doors.
Brynley Bridle - 11th November 2019
I’ve used BWM windows for a few jobs now & I’m always so pleased with not just the product but the service - genuinely you can’t be better looked after!
Beth Fisher - 31st October 2019
Excellent product and fitting was done to a very high quality would recommend to anybody.
Richard Graham - 5th October 2019
BWM Ltd and its people provided an excellent service of my windows installation right from sales to final installation. Every person I dealt with had complete knowledge of their product and service and they were able to answer my queries first hand.
Faqir Mohamed Chaudhry - 13th September 2019
Excellent service with very polite installers. Product just a week old at the moment but looks good.
Mr and Mrs Ellis - 3rd September 2019
Very pleased with the new door and windows. BWM were friendly and very easy to deal with. The installation all went very smoothly. Would highly recommend.
Ken Dawson - 20th August 2019
Recently had a new composite door fitted from BWM and I love it! Not only does it look amazing but the quality is second to none. This is the second time I’ve used BWM. Excellent service and excellent products.
Debbie - 9th August 2019
BWM have been kind, flexible and keen to deliver what we wanted and we are thrilled with the product. Thank you
Caroline Davies - 25th July 2019
Great products, super fitters who were polite and spotlessly clean, no sales jargon at all. Did the usual and had a few quotes and they were the best regardless, couldn’t recommend high enough, thanks again to everyone at BWM, I’ll be back for more !
Chris - 24th July 2019
An excellent buying experience from start to finish. BWM were professional throughout and provided us with great quality products at a competitive price. I have no problem in recommending this company to others.
J Williams - 16th July 2019
Keen prices for products sold and installed. Installer neat clean and finish to a very good standard. Very good product supplied and fitted Box sash bay and first-floor windows. Quote for front door was high and will be going to another company.
Shan - 15th July 2019
Kept me informed once order placed. Original installation date cancelled due to bad weather and another appointment booked within 2 days. Very efficient and tidy installers, who took 2 days to remove and install a new glass conservatory roof. The conservatory looks brand new now. Very pleased. All the staff I have dealt with have been very helpful.
G Jones - 25th June 2019
BWM fitted replacement windows and a Solidor front door last week. From the initial contact with the Company, we felt that the information and quotation we were given was itemised, honest and fair. All of the staff were knowledgeable regarding the products offered and indeed offered alternative and cheaper options, where available. There was no pressure to purchase their products. We were given time to gather quotes from other Companies but ultimately we returned to BWM. The staff from Victoria, Louise, Kevin, Chris, Jim and Pip were all polite and helpful. The finished installation looks superb with minimal disruption to our home. I do not have any reservations in recommending BWM.
JTS - 24th June 2019
Background - our house is very old, stone-built and a challenge for any workmen. The BWM (Treforest) salesman did not make any attempts to persuade us to buy any products, unlike most double glazing personnel. He visited, listened to what we wanted, gave helpful feedback & suggestions, and promptly sent an email with an estimate and links to their work. He has been professional and available to contact during the work. The senior fitter then made a site visit to assess the work. The fitters arrived on the stated day, worked all day and completed an excellent job. The fitters made very little mess and indeed vacuumed up!! The work enhances the property and we are glad we entrusted a local firm, BWM of Treforest, to carry out this work. We have asked them to carry out a further job which entails removing large triple glazed windows and refitting them into aluminium frames. We would highly recommend BWM for their professional & honest approach supplying a good product with no hard sales pitch and for being available for any follow-up works.
Sharon Purnell - 14th May 2019
Just had a new leka system conservatory roof and a new Solidoor fitted by B.W M. Excellent job, we are over the moon. We would highly recommend this company. From sales to fitters very professional, courteous and clean and tidy.
Wayne & Andrea Bolithio - 16th April 2019
Fab showroom. The windows and doors and shutters look amazing. With a variety of colours to choose from. Worth a visit. Girls on front desk very friendly. Showroom always looks clean and tidy.
Claire Wedlake - April 2019
BWM are amazing! From start to finish, they couldn’t do more to help. From helping me find the best extension solution (restricted by drains) and helping me source trustworthy and reliable trade men to help with other work- they went above and beyond! The doors and windows were perfectly tailored to my needs and were fitted expertly and efficiently. Couldn’t recommend more
Tamara Chamberlain - 15th March 2019
I would definitely recommend BWM! I cannot thank them enough for my beautiful new Solidor Composite Front Door. Superb service from start to finish.
Claire Christy - 12th March 2019
BWM worked with me to design and deliver a well designed and priced orangerie. They were professional, friendly and efficient to deal with. They built me a stylish addition to my home in a timely fashion and at a good price. Would definitely recommend!
Christina Locke - March 2019
Second time of using BWM and both times we have been very happy and would recommend this company.
Helen Williams - 27th February 2019
Everything is good about BWM - Always one and only for me
Mr Patel - 4th January 2019
Bwm have been a fantastic company to use. after having three quotes for shutters I decided to use BWM. Their price wasn't the cheapest quote of the 3 quotes but the level of knowledge was impressive and customer reviews gave me peace of mind and reassurance that they would be the best choice. I highly recommend this company the entire process has been great and my window shutters look superb.
K Howells - 3rd December 2019
5*... after many awful attempts of dealing with the big boys and having nothing but awful salesmen pushing us into a sale we found the wonderful BWM. nothing but professional from start to finish and the whole team are amazing. stay away from the big boys and support your local business, you won't be disappointed. they even put the hoover over for you. amazing work
Rhys Pursey - 16th November 2019
Would highly recommend BWM! I had beautiful bifolding doors fitted a few months ago. The team were able to advise and answer all my questions before fitting and the staff that came to fit them were very friendly and professional. Will definitely use them again! :)
Adele Twomey - 3rd November 2018
Just had my new windows fitted by BWM this week. We are so happy with the installation, the ream were great to deal with from sales to the great install team. I would not hesitate to recommend BWM!
Mike Borg - 20th October 2018
Fitted a Solidoor composite front door for me, very good job. Tidy fitting, good lads they even bricked up a vent next to the door that I needed doing. Good service from sales to door survey to fitting. Showroom is worth a visit to check colour and door accessories as sometime the brochure doesn’t do just the actual size of accessories. Recommend highly
Matt Rees - 12th October 2018
We had a new composite grey door and side panel fitted. Fantastic service from BWM from start to finish. I would highly recommend this company to anyone wanting any work done to their home.
Debbie Abercrombie - September 28th 2018
Aluminium Bifold Doors Cardiff
Sash Window Installation Cardiff and South Wales