Premium Windows & Doors for the Kootenays

Local Experts for Window & Door Installation Across the Kootenays

The Kootenays are known for their stunning mountain scenery, outdoor lifestyle, and charming communities. With colder winters and homes designed to capture breathtaking views, high-performance windows and doors are essential. Nagy Bros Windows & Doors works in your region, offering premium products installed by local professionals who understand the mountain climate and building styles found throughout the Kootenays. Their local knowledge ensures homes stay warm, efficient, and visually connected to the incredible landscape surrounding them.

Custom Window & Door Solutions for Every Kootenays BC Project

Whether you’re restoring a heritage home in Nelson or managing a modern new construction project in Castlegar or Cranbrook, Nagy Bros provides a complete, professional solution. We specialize in durable, climate-ready products designed specifically for the diverse landscapes of the Kootenays; ensuring your home stays energy-efficient through the heavy winter snowfalls of the Selkirk Mountains and the warm, vibrant summers of the Kootenay Lake region.

Kootenay Region Window Replacement

We supply and install a full range of high-efficiency vinyl, fiberglass, and custom windows engineered for the Kootenays’ demanding mountain climate. Our Low-E and argon-filled glass options are specifically designed to lower your energy bills while keeping your home comfortable, whether you’re facing the deep winter snows of Nelson and Revelstoke or the summer heat in Cranbrook and Castlegar. From the Slocan Valley to the Rocky Mountains, we provide the rugged thermal protection your home deserves.

Durable Exterior & Patio Doors

From secure, insulated front doors to high-performance sliding patio doors, we provide professional installation built for the Kootenays’ rugged environment. Our doors feature advanced weather-stripping and thermal breaks to ensure a perfect fit that seals out the mountain elements; from the heavy moisture of the West Kootenays in Nelson to the biting alpine winds of Cranbrook and Fernie. Enhance your home’s curb appeal while ensuring year-round durability in every Trail, Rossland, or Creston project.

New Construction Projects

For new residential and multi-family developments across the Kootenay region, we offer fast turnarounds and certified professional installations. We partner with local builders in Castlegar, Cranbrook, and Nelson to provide high-volume window and door solutions that meet modern BC Energy Step Code requirements. From mountain-side subdivisions to valley-floor developments, Nagy Bros ensures every new build in the East and West Kootenays is equipped with the efficiency and durability required for our region’s growing communities.

Proudly Serving Kootenays British Columbia Including

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Trail

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Fruitvale

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Nelson

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Nakusp

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Rossland

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Salmo

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Kaslo

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Warfield

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Castlegar

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New Denver

What Your Neighbors in the Kootenays & Beyond Are Saying

Read why homeowners from the Kootenays trust Nagy Bros for their window replacements.

Nagy Bros Window and Door

4.9

Based on 179 reviews

review us on

BL Cross

19:03 24 Apr 26

Nagy Bros were recommended by a neighbor. They have lived up to their reputation. Very pleasant to work with, attention to detail is exceptional, They are prompt and pleasant and very easy to work with and are very worthy of highest recommendation.

Jonah Gilani

23:41 23 Apr 26

Jared from Nagy bros was awesome. Helped me with my clean BC application. He was very patient and knowledgeable.

Elizabeth Wilson

18:04 23 Apr 26

Jared was at our home yesterday to give us a quote on replacing some windows. He answered all our questions regarding construction and timing in the addition to giving us the estimate. We found him to be knowledgeable and we’re impressed with his presentation. We decided to go with this company.

Darrell Guest

01:06 23 Apr 26

Have worked with them a few times, very reliable and quick to respond

Neil Grant

22:23 22 Apr 26

I’ve had a great experience working with Nagy Brothers. Their professionalism stands out right away, and they actually follow through on what they say they’ll do, which isn’t always the case these days. Communication is clear, the work is solid, and you can tell they care about doing things properly. I’ve already recommended them to several people and will keep doing so.

Linda Shaw

00:51 13 Jan 26

Nagy Brothers installed all new windows for all the units at Creekside Villas one year ago. There are 3 condo buildings on this property. They were very professional, got the work done in a very timely and organized manner, consistent with what they had promised. The workmen that installed my windows were very informative and worked quickly to do the installation. They did a follow-up to make sure I was happy with the work done. I am very satisfied with the results and would highly recommend them to anyone needing windows. This seems to be the same feeling my neighbours had and any of the residents I have spoken to about their experience with Nagy brothers. Excellent job!

Candace Banks

19:27 12 Jan 26

As both the resident manager and an owner of our complex I can say without doubt that the team at Nagy was absolutely amazing to work with. From a managerial standpoint they were quick and efficient handling everything themselves from scheduling units to corresponding with residents and access to the units. From an owners stand point the windows they installed have been a fantastic upgrade. My heating/ cooling bill has seen a decrease and the noise reduction is very noticeable.
They were also very approachable and answered any and all questions ( I had many) with clear and responsive communication. I highly recommend Nagy.

Michael Martens

17:49 23 Dec 25

As a contractor I've been buying windows and entry doors exclusively from Nagy Bros for the last few years. Their pricing is fair, product quality is great and their service is great too. I would highly recommend Nagy Bros to other contractors and to homeowners!

Brittany Eyerley

00:59 02 Dec 25

We had such a great experience with Nagy Bros on our full house project (22 windows and 2 door). Everyone we worked with was professional, friendly, and cared about doing a quality job. Our sales rep, Jared, was knowledgeable, approachable, responsive, and never pushy — which I really appreciated. The quote was competitive, and the installation crew (Scott, Dave, and Diana) were amazing. They worked efficiently, kept everything clean, and their experience really showed in the finished result. They were so kind and patient with my kids asking lots of questions throughout their workday!
Rob was great with following up to make sure all the final tasks were complete.
I’d highly recommend Nagy Bros to anyone considering a window project — they made the whole process smooth and enjoyable.

Marion Mayo

00:07 13 Nov 25

I had all my windows installed by Nagy Bros, and I couldn’t be happier with the experience. The entire team — from the owners and office staff to the installers — was friendly, professional, and courteous. The work was completed on time, and they left my home spotless when finished. They even followed up after the installation to make sure everything was perfect. Highly recommend! A sample of one window replacement. Before and after.