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Trusted by Cos Cob homeowners for premium James Hardie siding installation, expert craftsmanship, and a stress-free process, from start to finish.

Cos Cob is a community that values quality. From the classic Colonials along Strickland Road to the Cape Cod Revival homes tucked near Cos Cob Harbor, the homes here are a reflection of the people who live in them. When your siding starts to fail, fade, or fall behind the character of your neighborhood, it shows. Giant Siding & Windows understands what is at stake for homeowners in Cos Cob and Fairfield County.

Since 2008, Giant Siding & Windows has helped discerning homeowners across Greenwich, Westchester County, and Fairfield County upgrade their exteriors with premium materials and factory-trained installation crews. We are a family-owned business now in our third generation, and we bring a level of accountability and craftsmanship to every project that larger, more transactional contractors simply cannot match.

Whether you are tired of repainting every few years, dealing with woodpecker damage on your wood siding, or simply ready for a look that reflects the value of your home, we are here to help you make the right decision with confidence.

Our Siding Services in Cos Cob, CT

James Hardie Fiber Cement Siding
James Hardie fiber cement siding is the gold standard for homes in coastal Connecticut. It resists moisture, rot, insects, and the kind of woodpecker damage that plagues traditional wood siding. As the longest-tenured James Hardie Elite Contractor in the market with over 500 Hardie installs and a James Hardie President’s Award, Giant Siding & Windows brings a level of expertise to Hardie installation that most contractors in Fairfield County simply cannot claim. Our in-house crews specialize exclusively in James Hardie, so every panel, trim piece, and detail is installed to manufacturer specifications.

Siding Replacement & Re-Siding
If your existing siding is aging, damaged, or simply outdated, a full re-siding project can dramatically transform your home’s curb appeal and long-term protection. We work with Cos Cob homeowners to select the right product, profile, and color to complement their home’s architecture, whether that is a stately Colonial, a charming Cape Cod, or a custom contemporary build.

Siding Repair
Not every project requires a full replacement. Our team can assess damage, identify the scope of the issue, and recommend a repair solution that protects your home and your investment without unnecessary cost. We always provide an honest evaluation.

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Versatile Siding Selections

We offer several siding options so you can find the perfect fit for your home.

Arctic White James Hardie Siding on a Farmhouse Style Home

James Hardie Fiber Cement Siding

This elegant siding—a favorite from coast to coast—comes in gorgeous, baked-on colors that stay vibrant, and styles that work on any architecture. Resistant to pests, bad weather and even fire (it’s non-combustible!), James Hardie siding is low maintenance throughout its lifetime. And it comes with a 30-year non-prorated transferable warranty.

Hardie Siding

Blue Vinyl Siding

Vinyl Siding

An attractive choice that’s especially popular on starter homes and rental properties, vinyl siding is designed to be easy to maintain, as it never needs to be painted. Vinyl is sleek, modern-looking, and weather-resistant, offering you a simple way to give your exterior a refresh.

Vinyl Siding

Cedar siding on a colonial home

Cedar Shake Siding

Classic and eye-catching, cedar shake siding is an attractive option for both historic and contemporary homes in Westchester and Fairfield counties. With its attractive natural grain and traditional charm, wood siding has unmistakable beauty and can be treated to withstand the weather.

See why our business has 5-star reviews: Read what our customers are saying!

“Giant Siding and Windows is amazing!! They’re so responsive, professional, they arrive on time and work quickly & accurately. It’s a true pleasure to work with them. Some of the siding fell off our house during a storm and Giant Siding and Windows repaired it the same day I called them about the issue. Amazing customer service. Cannot recommend them enough!”

-Kathryn P.

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Why Cos Cob Homeowners Choose Giant Siding & Windows

  • James Hardie Siding on a homeLongest-tenured James Hardie Preferred Contractor in the market – Most contractors in Fairfield County carry Hardie as a product. Very few have the training, volume, and recognition that come with this designation. It matters for your warranty and for the quality of your install.
  • James Hardie President’s Award Winner – This honor is awarded to a select group of contractors each year based on excellence in installation, customer satisfaction, and overall performance. Giant Siding & Windows is proud to be among them.
  • 100% Virtual Sales Process – No pushy salespeople in your home. Our entire consultation and proposal process is handled virtually, from the comfort of your home or office. You get all the information you need to make a confident decision on your own terms.
  • In-House, Factory-Trained Installation Crews – We do not subcontract. Our crews are trained directly by James Hardie and specialize in one product line. That focus translates to cleaner installs, fewer issues, and work that holds up over time.
  • Family-Owned and Operated for 3 Generations – We have been in business since 2008, and we stand behind every project we complete. When you call us after the job is done, you reach a real team with real accountability.
  • Warranty Registration Handled for You – After your project is complete, we register all warranties through our contractor portals and send you the documentation. Nothing falls through the cracks.

Common Siding Challenges for Cos Cob Homeowners

Cos Cob’s location along the Long Island Sound and the Mianus River creates a challenging environment for home exteriors. Salt air, Nor’easters, frequent freeze-thaw cycles, and coastal wind-driven rain put extra stress on siding year after year. Homeowners near Cos Cob Harbor and along the Strickland Road Historic District also contend with the reality of aging wood siding on Colonials and Victorian-era homes that were never designed for low maintenance. Woodpecker damage is a persistent frustration in the wooded residential corridors north of East Putnam Avenue. And for the many families in Cos Cob who have deferred exterior work for years, the gap between their home’s value and its curb appeal can be striking. James Hardie fiber cement siding addresses all of these concerns in one upgrade: it is impervious to moisture, insects, rot, and pecking, and it holds its color for decades without repainting.

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Frequently Asked Questions About Siding Installation

How long does a siding project take from start to finish?

Most residential siding projects are completed in one to three days, depending on the size of the home, the scope of the work, and the complexity of the trim details. We walk through the full timeline with you during your pre-production meeting so there are no surprises.

Is James Hardie siding a good choice for homes near the water in Cos Cob?

Yes, James Hardie fiber cement siding is one of the best choices for coastal Connecticut. It is engineered to resist moisture infiltration, salt air, and wind-driven rain, which are all common challenges for homes near Cos Cob Harbor and the Mianus River. It also qualifies for a Coastal installation specification that adds an additional layer of protection.

Do you work on historic homes in the Strickland Road Historic District?

We work on homes that are looking to upgrade their siding rather than preserve original materials. If your home is in a historic district and requires a preservation specialist or a formal approval process, we recommend contacting the Greenwich Historic District Commission before starting any project. For homes that simply have age and character, we are happy to help find a siding profile and color that honors that aesthetic.

How does your virtual sales process work?

  • You schedule a free consultation at a time that works for you.
  • We meet virtually to discuss your goals, the condition of your siding, the products that make sense for your home, and the investment involved.
  • There is no salesperson coming to your home, and no pressure to decide on the spot.
  • Our follow-up call covers scope, process, timing, and investment in full detail.

Do you handle warranty registration after the project?

Yes. We register all applicable warranties through our contractor portals and send you the full documentation after project completion. You will have a clear record of your coverage without having to manage any paperwork yourself.

What does the process look like from first contact to project completion?

Our process follows four clear steps:

  1. Schedule a free virtual consultation
  2. Follow-up call to discuss scope, process, timing, and investment
  3. Pre-production meeting to confirm all project details and measurements
  4. Installation followed by a final inspection

Get Started on Your Siding Replacement Project by Booking an Appointment

Giant Siding & Windows has served homeowners across Fairfield County and Westchester County since 2008. As a third-generation, family-owned business, our reputation is built project by project in the communities where our clients live. We do not rely on high-volume sales tactics or commissioned reps. We rely on the quality of our work.

Our national manufacturer certifications speak for themselves:

  • James Hardie Preferred Contractor (Longest-tenured in the market)
  • James Hardie President’s Award Winner
  • Over 500 James Hardie installs completed
  • 1st Marvin Authorized Contractor in the market
  • Marvin Contractor of the Year 2018
  • Marvin Trained Installers on staff

These designations are not awarded for longevity alone. They reflect consistent installation quality, customer satisfaction, and adherence to manufacturer standards that protect your warranty.

Ready to upgrade your Cos Cob home? Contact Giant Siding & Windows today to schedule your free consultation.

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