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.

Get inspired

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

Our Gallery

The right choice for your home

Explore our range of windows designed to suit every home, style and lifestyle – combining timeless design, energy efficiency and lasting quality.

PVC Windows

With PVC windows, you’ll notice the difference from day one, as they are the most energy efficient on the market. Heating costs go down while warmth and style rise, thanks to modern, slimline double or triple glazing that enhances your home’s natural character. Beautifully low maintenance, they simply wipe clean with a damp cloth. Quick, clean installation means less fuss, more comfort and a home you’ll love all over again

  • A-rated solar gain glass
  • Market-leading A+12 efficiency
  • 8-point Secured by Design lock
  • Internal glazing for security
  • 100% lead-free PVC
  • Sleek slimline frames
  • High-gloss easy-clean finish
  • Ten-year guarantee
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Sliding Sash Windows

Designed to suit everything from classic Dublin red-bricks to modern homes, these elegant PVC sash frames combine timeless character with modern efficiency. Offering easily controllable ventilation, they outperform most window styles while keeping draughts and noise firmly outside. Choose from period joinery, authentic 19th century colours and wood-effect finishes for a truly traditional look. Each window is custom-made and hand-finished, giving you the perfect blend of style, durability and comfort.

  • Energy-efficient internal glazing
  • 8-point Secured by Design lock
  • Effortless and safe opening with concealed spring system
  • High-gloss, easy-clean finish
  • Deposit protected by guarantee
  • Ten-year guarantee
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Flush Casement Windows

Bring a touch of elegance to any home with flush casement windows. Offering sleek, contemporary lines that echo traditional 19th century timber frames, they combine timeless style with modern performance, providing exceptional insulation to keep your home warm and comfortable all year round. Unlike timber, they won’t crack, warp, or distort and require nothing more than an occasional wipe with soapy water – delivering the authentic look of wood without the maintenance.

  • Like-for-like glass, better insulation than timber
  • Modern composite for a virtually maintenance-free finish
  • Luxurious look with heritage colour range
  • No painting required
  • Deposit protected by guarantee
  • Ten-year guarantee
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Steel
Windows

Whether you’re updating slim-frame windows, recreating classic steel frames, or adding a Modernist touch to a new build, steel windows bring style, quality, and performance. As Dublin’s only supplier, we’re proud to offer products that reflect our high standards and reliable, friendly service.

  • 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
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Steel Look Aluminium Windows

Whether you’re inspired by Art Deco design or industrial style, our Steel Look range brings a modern edge to an iconic classic. With sleek, slim sightlines, it creates a striking architectural feature for both traditional and contemporary homes. Crafted from precision-engineered aluminium, Steel Look offers the timeless appearance of steel with the added benefits of advanced thermal performance, security and durability.

  • Using like-for-like glass, thermal performance/insulation outperforms Steel.
  • Modern composite material creates a virtually maintenance-free finish.
  • Luxurious look and feel available in any RAL colour.
  • No painting needed
  • Ten Year Guarantee on all products.
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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

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

Patricia Carey

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 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

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 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

Helpful Guides
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
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

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.

Read More

See all Helpful Guides

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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.

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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