Business Details
34 Years
experience
Award-Winning Double Glazing & Home Improvements in South Wales
Established over 33 years ago, MPN Windows is a family-run business rooted in trust and quality craftsmanship. As an award-winning double glazing installer, we specialise in windows, doors, conservatories, and roofline solutions across South Wales. Our team of fully qualified tradespeople delivers A-rated products with A-rated installation, backed by a 10-year insurance-backed warranty. FENSA registered and a member of the Glass and Glazing Federation, we prioritise customer satisfaction through transparent service and no subcontractors. With decades of combined experience, our skilled craftsmen ensure precision and efficiency in every project. We focus on long-term relationships, evidenced by our high rate of repeat customers and word-of-mouth referrals. Our commitment to excellence extends to noise-reducing glazing, secure doors, and bespoke conservatory designs. Every installation meets rigorous standards, combining durability with aesthetic appeal. Customer reviews highlight our reliability, competitive pricing, and timely execution. As a local business, we understand regional needs and strive to exceed expectations in every interaction.
Services
uPVC Windows
Composite Doors
Conservatories
Roofline Solutions
Garage Conversions
Extensions
Double Glazing
Tiled Roofs
Noise Reducing Glazing
Q-secure Doors
Served areas
- Cardiff, Barry, Penarth and South Wales
Details
- Year established: 1992
Highlights and features
- We have over 33 years of experience in double glazing installations.
- All work comes with a 10-year insurance-backed warranty.
- Our team of fully qualified installers uses no subcontractors.
- Awarded Best Double Glazing Company for Wales in 2025.
- We focus on customer care, with 85% of business from referrals.
Associations and certifications
- FENSA
- Glass and Glazing Federation
What people say
High degree of satisfaction
Prompt and efficient manner
Impressed with efficiency
Trusted quality
Excellent service
Services
uPVC Windows
Our uPVC windows combine durability with energy efficiency, featuring low-maintenance frames and noise-reducing glazing. Designed to enhance thermal performance, they lower energy bills while improving home security. Each installation includes a 10-year insurance-backed guarantee for complete peace of mind.
Composite Doors
Composite doors offer superior security and insulation, available in modern and traditional styles. Reinforced with multi-point locking systems, they resist forced entry while maintaining aesthetic appeal. Every door is custom-fitted by our expert installers for a perfect finish.
Conservatories
From Victorian to orangery styles, our conservatories extend living spaces with light-filled designs. We use premium materials for year-round comfort, including insulated roofs and energy-efficient glazing. All structures come with a 10-year warranty.
Tiled Roofs
Replace outdated glass roofs with energy-efficient tiled options, transforming conservatories into usable rooms. Our lightweight tiled systems improve insulation without requiring planning permission. Installation includes a comprehensive 10-year guarantee.
Noise Reducing Glazing
Specialist glazing solutions reduce external noise by up to 70%, ideal for properties near busy roads. Double-glazed units with laminated glass and acoustic interlayers ensure a quieter indoor environment while maintaining security standards.
Questions
What areas do MPN Windows serve?
We operate across South Wales, including Cardiff, Swansea, and Newport, providing local expertise for all installations.
Do your windows and doors have guarantees?
All installations include a 10-year insurance-backed warranty and FENSA certification for compliance and durability.
Are your installers directly employed?
Yes, we use our own fully trained tradespeople—no subcontractors—to ensure consistent quality and accountability.
Can you replace conservatory roofs?
We specialise in upgrading old glass roofs to energy-efficient tiled options, enhancing comfort and usability year-round.
How do I get a free quote?
Request a quote online via our website or call 0800 158 8800 for a no-obligation assessment of your project needs.
Reviews (15)
M. I.
May 22, 2022
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Amazing service very professional firm from the order to the fitting blissful I recommend them to anyone, good quality product too thanks MPN
Michelle Gallagher
Aug 04, 2021
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Well what can I say we have just had 12 windows and 2 doors plus a new tiled conservatory roof off MPN. From the first phone call to the fitters turning up to do the job everything was completely flawless. We have already recommended MPN to family and friends and would like to thank them for doing a first class job.
Michelle Gallagher
Jul 08, 2021
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Well what can I say we have just had 12 windows and 2 doors plus a new tiled conservatory roof off MPN. From the first phone call to the fitters turning up to do the job everything was completely flawless. We have already recommended MPN to family and friends and would like to thank them for doing a first class job.
Taela-Mae Davies
Jun 16, 2021
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We used MPN Windows a few years for the back of the house, they were fab then so we went with them again for the front windows and door. They are amazing and we are so pleased with them. MPN are all quick and helpful with their communication and the work by the fitters was an excellent standard. I would definitely recommend MPN to others.
Wilf Box
Jun 05, 2021
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I decided to use MPN Windows because of their quality of work, the price and the fact they make their own windows. I was not disappointed. I had two sets of French windows, a single window, one door and six openers on the same run in my garage. James was the fitter and from the start to the end nothing was a problem. Everything was done the proper way. He was there to do the job as if he was installing it in his own house. Very happy with the whole process and will use them again
Linda Mills
Apr 02, 2021
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Had new conservatory built. Dan and his mate worked very hard in freezing cold weather to remove an old timber built conservatory and errect a new pvc one. We also had some broken down units replaced and wheel chair access to finish the job off nicely. The boys worked really well and were professional at all times. I wouldn't hesitate to recommend Mpn windows to anyone. Well done Mpn we are very happy with the end results. Linda & Tony mills
Tim Williams
Feb 18, 2021
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Had new composite door and three windows fitted today, first class service from fitters also easy company to deal with. Would recommend.
Matthew Emanuel
Dec 28, 2020
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Recently had a full house of windows and 2 doors fitted by MPN. Very professional from start to finish and excellent value for a high quality product. No pressure to buy unlike many other companies that quoted us. Would definitely recommend.
Heather Handley
May 12, 2020
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Recently had 6 windows and 2 doors from MPN. Absolutely fabulous service. From the initial telephone call to the installation of the windows and doors. Very helpful in explaining everything from the cost to the fitting. Came on the date they said they would and caused limited disruption to the household. Would recommend that you contact them if you are thinking of having doors or windows fitted.
Taryn Considine
Mar 04, 2020
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I had a composite door fitted by MPN in 2016 and recently we had an issue with the lock sticking making it very hard to open and lock the door. I contacted MPN and they arranged for someone to come out the same day and they changed the barrel and supplied us with new keys, all within 25 minutes. Absolutely amazing customer service and would recommend to everyone and will use again in the near future.
Katie Smith
Sep 01, 2015
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We had our four front windows replaced by MPN with new energy efficient A rated windows and they are great. They have made a huge difference to our property and have transformed our home. From the MD down to the installation teams this family run company are professional and efficient
Heather Handley
Recently had 6 windows and 2 doors from MPN. Absolutely fabulous service. From the initial telephone call to the installation of the windows and doors. Very helpful in explaining everything from the cost to the fitting. Came on the date they said they would and caused limited disruption to the household. Would recommend that you contact them if you are thinking of having doors or windows fitted.
Linda & Tony Mills
Had new conservatory built. Dan and his mate worked very hard in freezing cold weather to remove an old timber built conservatory and errect a new pvc one. We also had some broken down units replaced and wheel chair access to finish the job off nicely. The boys worked really well and were professional at all times. I wouldn't hesitate to recommend Mpn windows to anyone. Well done Mpn we are very happy with the end results.
Matthew Emanuel
Recently had a full house of windows and 2 doors fitted by MPN. Very professional from start to finish and excellent value for a high quality product. No pressure to buy unlike many other companies that quoted us. Would definitely recommend.
Mrs Baker
We had MPN in after a recommendation and they replaced the existing wooden windows and doors in my whole house. The price and service we had from MPN was excellent.