20,000+ happy customers,
here’s what they say…
We were very impressed with our windows and door replacement and the complete service from beginning to end. Professional from start to finish. Excellent customer service. Jennifer (sales agent) took her time to make sure we were happy. Finished work was excellent. Will definitely recommend to friends and neighbours! Slavik team is the best! Fitting was quick and tidy. Would highly recommend!
Adina Lamasanu
Top class service Job completed in one day Great product and service 5 star company
Patricia Carey
We recently got some windows fitted. Impressed with the professional service from beginning to end. The fitters were very tidy, nothing to clean up after. The windows exceeded our expectations, top quality and expertly fitted. Highly recommend McMahon Nagle and wouldn\'t consider using anyone else in the future.
Shaun Mac
We recently had a new Chartwell green door fitted. We were extremely happy with the service we received from Jennifer and the team. It really helped that Jennifer came to our home to go through all of the options. I would definitely recommend McMahon and Nagle and will use their service again.
Eileen O\'Hara
Customer Service is excellent. Caroline was the best and answered all our questions clearly and concisely. We now have all the information we need to go forward with our new door. Thank you!
Síobhán Thomas Hahn
Got my windows in today and delighted with them but the service from the company is outstanding – Jennifer was great with help and advice and thd crew that arrived to fit them – Martin and Rob – they were so professional, so helpful and so clean its hard to believe the big job that did – could not recommend them high enough !
Carol Morris
Our promise to you
Why so many Dubliners choose us
Expert guidance, clear pricing, and flawless installation, all designed to make life easier.
A world of choice for you to explore
Our Windows
Energy-efficient, secure and stylish – guaranteed to transform the look and feel of your home.
Our Doors
Strong, secure and beautifully crafted – ready to make a lasting first impression.
Steel Windows & Doors
These elegant, modern steel frames combine durability, style and maximum light.
Inspiration
Discover how our windows and doors have brought warmth, light and character to Dublin homes just like yours.
Family Room Interior
Bringing the outdoors in
Bi folding doors
Make the most of your outside space
Glazed internal doors
bringing light to previously dark spaces
Delivering on your priorities
Sale now on. 35% off this month
Discover design freedom at its best with MCMN Windows’ exclusive Free Design Consultation
Helpful Guides
SEAI Grant for Energy Efficient Windows and Doors – What Homeowners Need to Know
There’s been a lot of talk recently about the new SEAI grant for upgrading windows and doors and it’s no surprise why.
Fit Right First Time: Why Accurate Window Installation Matters More Than You Think
When you’re replacing windows in your home — especially one you’ve lived in for years or a property you’ve recently purchased — you want the job done once, and done properly.
A more comfortable home with High-Quality PVC Windows
With McMahon & Nagle PVC windows, energy and heating costs go down, style and warmth go up! Quick and clean installation process.
Trusted. Proven. Reliable.
Experience the difference of a company built on expertise, integrity, and unwavering quality