Your bespoke journey

 

Free Consultation

Our design experts visit your home to chat things through and find out exactly what you want.

 

Detailed Survey

We measure with precision and plan carefully, ensuring a right fit first time for every window.

 

Professional Installation

Our skilled team delivers clean and hassle-free fitting with minimal disruption.

 

Aftercare & Guarantee

Enjoy friendly support and after-sales service with the reassurance of a 10-year guarantee.

Sale now on. 35% off this month

Discover design freedom at its best with MCMN Windows’ exclusive Free Design Consultation

Get Started

Get inspired

See how our bespoke, design-led solutions have transformed Irish homes with style, comfort and lasting quality.

Our Gallery

Discover your ideal doors

Explore our stunning range of doors designed to suit every home, style and lifestyle – combining security, style and lasting quality.

Composite Doors

Your door is the first welcome to your home and with our range it’s one you can feel proud of every day. Built from steel, fibre-reinforced polymer and high-density polyurethane, these composite doors combine exceptional strength with enduring style. Advanced locking technology keeps your home safe, while a wide choice of colours and finishes means you can create the perfect look. With McMahon and Nagle, security and style come as standard.

  • Cut heating bills with market-leading energy efficiency
  • Secure internal glazing
  • Quick, clean installation
  • Triple-cylinder lock for maximum protection
  • Easy-clean high-gloss finish
  • No warping, fading or rusting
  • Deposit fully guaranteed
  • Ten-year guarantee
side-image

French & Patio Doors

Bring more light and air into your home in summer, while keeping warmth and comfort inside during winter with beautiful doors designed to create a seamless connection between indoors and out. With straightforward installation and low-maintenance finishes, they’re built to perform beautifully for years. Advanced security features, including anti-bump, anti-pick, anti-drill locks and reinforced aluminium handles, ensure your home is safe, secure and stylish.

  • A-rated energy savings
  • Secure internal glazing
  • Quick, clean installation
  • Triple-cylinder lock for maximum protection
  • 8-point police-approved locking
  • Easy-clean, high-gloss finish
  • Ten-year guarantee
side-image

Sliding and Bi-folding Doors

Transform your home with sliding or bi-folding doors Designed to maximise natural light and create a seamless flow between indoors and out, these doors combine style with performance. Unlike timber or uPVC, our high-grade aluminium frames stay perfectly aligned, offering lasting strength and elegance. With industry-leading energy efficiency and expert installation, these doors are built to look great and perform beautifully for years to come.

  • A-rated for energy savings
  • Secure internal glazing
  • Quick, clean installation
  • Triple-cylinder lock for maximum protection
  • 8-point locking system, police-approved
  • Deposit fully guaranteed
  • Ten-year guarantee
side-image

Why Dublin homeowners choose McMahon and Nagle

From first chat to final fitting, we make the process simple and stress-free, with stylish, secure windows that feel right at home.

01

Trusted Experts

Local professionals with years of experience.

02

Quality Craftsmanship

Commitment to excellence and clear communication.

03

Transparent Pricing

Honest costs and timelines with no hidden surprises.

04

Satisfaction Guaranteed

Backed by our Fit Right First Time Guarantee.

20,000+ happy customers
Here’s what they say…

See all reviews

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

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

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

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

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

Top class service Job completed in one day Great product and service 5 star company

Patricia Carey

Helpful Guides
General

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.

Read More
General

Renovation Tips for Dublin Homeowners: What to Know Before Replacing Your Windows

Renovating a home is an exciting step, whether you’ve just purchased a property or are upgrading a house you’ve lived in for years. But for many Dublin homeowners, renovation also comes with questions, decisions, and the need to get things right the first time.

Read More
General

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.

Read More

See all Helpful Guides

side-image

FAQs

After over 40 years in business, we’ve heard all the questions. We’ve included some of the answers here but if there’s more you need to know, please feel free to get in touch.

We can give you a ballpark figure based on standard sizes and materials, but a precise quote requires a home visit where we can measure accurately and discuss your exact requirements.

No hidden costs. Our quotes are fully itemised and we walk you through every element before you commit. What you see is what you pay.

Yes, we offer flexible payment options to suit your budget. Ask us about our finance packages during your free home consultation.

Typically 4–6 weeks from order confirmation to installation, depending on product specifications and current demand.

Custom-made windows are manufactured to your exact specifications. Occasionally, supply chain factors or bespoke requirements can add a little extra time, but we always keep you informed.

Sale On. 35% off this month

Discover design freedom at its best with MCMN Windows’ exclusive Free Design Consultation

Get Started

Blogs and Latest News
General Style Tips

The Ultimate Versatile, Flush Casement Windows

Replace your old timber windows with the clean, elegant lines of our modern flush casement range.

Read More
General Style Tips

Traditional Elegance with Sliding Sash

Where heritage meets contemporary comfort and efficiency… Showcase your home’s traditional style with Sliding Sash Windows.

Read More
General Style Tips

Stay Warm with PVC Windows

With McMahon & Nagle PVC windows, energy and heating costs go down, style and warmth go up\! Quick and clean installation process.

Read More

See all Blog

Trusted. Proven. Reliable.

Experience the difference of a company built on expertise, integrity, and unwavering quality

5★

Outstanding customer reviews

100%

Fit Right First Time promise

40+

Years of experience

20,000

Happy customers