GS Exterior Experts

9 Reviews

Siding & Exteriors

1 Verified Hire

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About Us

3x Best of Houzz winner

Locally owned

Family owned

Denver's Leader in Siding, Windows & Exteriors - Best of Houzz '18

Welcome to GS Exterior Experts—Colorado’s trusted exterior remodeling contractor since 1999. As a family-owned and operated company, we specialize in complete siding replacement, fiberglass Marvin and Pella replacement windows, full roofing systems, and deck replacements for residential, commercial, HOA, and multifamily properties throughout the Denver metro area and communities across Colorado. As an award-winning James Hardie siding contractor and five-time President’s Club recipient, we install durable, low-maintenance fiber cement siding engineered for Colorado’s demanding climate. We also install energy-efficient fiberglass window systems from Marvin and Pella to improve comfort, performance, and curb appeal. Our outdoor-living team specializes in complete deck replacements using premium TimberTech and AZEK decking systems. These low-maintenance decking products deliver lasting beauty and exceptional resistance to moisture, weather, fading, and everyday wear. GS Exterior Experts is also experienced in wildfire-resilient exterior protection. We help Colorado property owners strengthen their homes with ignition-resistant siding, Class A roofing, fire-resistant decking, wildfire-rated vents, and other exterior systems designed to reduce vulnerability to wind-driven embers and severe weather. For qualifying hail and storm damage, our team provides complete exterior restoration and helps property owners navigate the insurance claim process from inspection through final installation. With more than 25 years of proven experience, GS Exterior Experts delivers Golden Standard Quality through expert craftsmanship, premium materials, and attentive project management. Our focus is complete replacement, substantial exterior remodeling, and wildfire-resilient exterior upgrades. Contact GS Exterior Experts today for a complimentary consultation and discover why Colorado property owners trust us to transform, protect, and strengthen their homes and buildings.

Awards

James hardie presidents club winner for Most Volume in the west region 2024 Angies list super service awards from 2011 to current. A rating.

12 Projects

Mid-sized country gray two-story mixed siding exterior home photo in Denver with a shingle roof

James Hardie Dream Collection Siding Transformation

Littleton Complete Exterior Siding Replacement

Littleton, CO

Inspiration for a large rustic backyard deck remodel in Denver with no cover

Siding and Windows

Denver, CO

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Business Details

Business Name

GS Exterior Experts

Phone Number

(720) 679-7259

Address

9083 W. Peakview Drive
Unit 2
Littleton, CO 80123

Typical Job Cost

$20,000 - 250,000

$15,000 - 60,000

License Number

242961

Followers

22 Followers

Socials

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Services Provided

Siding Installation

Soffit Installation

Fiber Cement Siding

Cedar Siding

Wood Siding

Siding Sales

Masonry

Stone Siding

Stucco Installation

Deck Building

Home Remodeling

Roof Replacement

Roofing

Window Installation

Window Replacement

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Areas Served

Denver

Colorado Springs

Aurora

Fort Collins

Lakewood

Thornton

Arvada

Westminster

Centennial

Boulder

Highlands Ranch

Longmont

Loveland

Broomfield

Castle Rock

Commerce City

Parker

Littleton

Southglenn

Northglenn

Ken Caryl

Englewood

Wheat Ridge

Windsor

Lafayette

Erie

Columbine

Louisville

Golden

Greenwood Village

Black Forest

Federal Heights

Lone Tree

Superior

Castle Pines

Bailey

Conifer

Castle Pines North

Monument

Evergreen

Roxborough Park

Applewood

Cherry Hills Village

Avon

Sheridan

West Pleasant View

Breckenridge

Edgewater

Vail

Silverthorne

Genesee

Frisco

Coal Creek

Idaho Springs

Elizabeth

Columbine Valley

Indian Hills

Nederland

Dillon

Kittredge

Bow Mar

Aspen Park

Central City

Morrison

Idledale

Larkspur

Franktown

East Pleasant View

Black Hawk

Sedalia

blackhawk

Pinery

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Credentials

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Featured Review

Bonnie Lyons

Write a Review

9 Reviews for GS Exterior Experts

Newest first

4.9|9 reviews

Work Quality

5.0

Communication

5.0

Value

5.0

John Ross

Project Scope: Siding, Roofing, Gutters, Soffits, Deck Improvements Products Used: James Hardie Siding, Class 4 Roofing Rating: ⭐⭐⭐⭐⭐ We moved to Boulder and took on a major exterior remodel of our new home. After a lot of research, we hired GS Exteriors and they exceeded expectations. Their craftsmanship, competitive pricing, and project management stood out. They handled every part of the project with professionalism—and responded promptly to all punch list items. Special recognition goes to: •Oswald (PM) – delivered a “Gold Standard” result •Erwin – consistently hardworking and detail-oriented •Wesley (Foreman) – exceeded expectations •Jon Virgil – responsive and reliable throughout We couldn’t be happier with the outcome. Highly recommend GS Exteriors for exterior renovation projects.

July 17, 2025

Comment from GS Exterior Experts:

Thank you for the great review John. We appreciate your feedback!

Judi Medlin

GS Exterior Experts did a terrific job for us. This was a BIG job - we started with the siding/windows and then decided to replace the roof. GS did it all. The best parts of working with them were: very high integrity, excellent professional competence, extremely hard working, competitive pricing, superior quality job, pleasant crew team members, outstanding outcome! A job this significant was not without its bumps which is why we withheld the 5 star rating. To their credit, GS made right on everything we asked of them - we just would have preferred some of these matters not occurring in the first place. That said, we trust Keith Vigil and his crew leader, Marvin, implicitly and would definitely hire them again, although with an all high-quality exterior, our hope is that we do not have to!

March 30, 2017

Jane Siska

Hire these guys! Five star is not high enough in my opinion. This company replaced siding on one side of my house with James Hardie cement siding and did an outstanding job, so I hired them to replace 8 windows and to replace the trim with cement siding trim. I interviewed 3 other window companies and most do not place protecto tape underneath the trim or replace the trim. The trim on our house was 20 years old and some of it was soft, The builder did not put protecto tape under the trim or weather wrap under the siding when it was built. The old windows had leaked and there was no protection under the windows or under the siding, so there was rot. GS Exterior Experts did a fabulous job when installing the windows. They removed rotten pressed wood and patched with new and they removed soggy wood and replaced with new under the window sill of a bay window. The replaced trim looks so much better than it did originally. They also did a great job of installing the windows. The front window is a bay window with window panes and it was difficult to install because it had been originally installed unevenly so the panes did not match. Also the window opening was a sloppy square with very uneven sides horizontally and vertically. Needless to say it looks great now. I thought the price reasonable because of the superb carpentry and use of James Hardie cement trim and of course, the very good window installation. These guys are devoted to doing an excellent job and succeed.

March 28, 2017Last modified:March 28, 2017

Bonnie Lyons

We hired GS Exterior Experts to upgrade our siding, install new windows, and build a new front porch. We initially received quotes from 3 separate companies, but after discussing our ideas and the overall costs with Ernest, we decided to go with them. Ernest was our go to guy for everything and he ensured that things went smoothly throughout the entire process. The crew was courteous, clean, and were relatively quiet considering the type of work they were doing. This company has done numerous projects throughout the area and I believe their work speaks for itself.

March 28, 2017

Judith Richardson

GS Exterior Experts provided a quality Hardie Board siding installation at a competitive price. I would highly recommend this company for any siding and painting project.

March 28, 2017

Frank P

Installing James Hardie fiber cement lap siding with the Woodtone finish was one of the best projects I ever did - no more woodpeckers and peace of mind of wildfires - GS did a great job and the finished product looks fantastic.

March 28, 2017

traderdvo

I had my entire house resided with James Hardie lap siding and my front entrance with the Sierra 8. We had the gutters replaced, the deck was replaced with Trex composite decking and the railing was replaced with the Fortress metal railing. We then had the entire house repainted with Sherwin Williams Emerald paint. GS was always on time, they did a great job. When I wanted to change my design half way through the project these guys did not miss a beat. Everything was explained before and through the project. I have and will continue to recommend this company. I will certainly hire them again when the need arises, they were great to work with. D. Vogel Centennial, Co

August 1, 2015

Comment from GS Exterior Experts:

Thank you for the good word. We appreciate the business.

User

In March 2015 we replaced our failed 8 year old CertainTeed WeatherBoard, as will most people in our Fort Collins development need to do (Weatherboard has failed across the country and lost a $103 million class-action lawsuit -- unfortunately the settlement is worth extremely little or nothing to homeowners, with many hoops to jump through). Keith at GS Exterior Experts gave us an initial estimate via email within 3-4 hours based on Internet information! We considered other siding, but James Hardie primed cedar mill ultimately was the most logical replacement choice for us. Keith then provided an on-site estimate within several days, and GS' very competitive quote was selected from four bids total. The bid was quite consistent with the original numbers. The GS crew showed up within several weeks as scheduled, and was very experienced at installing HardiPlank according to Hardie company specifications -- critical to preserving the manufacturer's warranty as well as the integrity of the home. I watched the complete installation carefully. The whole job was done, from demo to final good clean-up, within five days as promised. Other bids received estimated two weeks to much longer to complete. Understand, replacing fiber cement siding is not inexpensive. And it is painful when the house is only eight years old. But GS Exterior Experts did an outstanding job from initial contact to punch list follow-up. Our house looks great. I recommended Keith to my neighbor without hesitation (GS did their work immediately following ours) and I will do so for all my other neighbors as they recognize they have to replace their cracking WeatherBoard. Keith is refreshing to work with.

July 29, 2015Last modified:April 16, 2024

Comment from GS Exterior Experts:

Thank you Bob for the great review and business it is much appreciated.

pneve

GS Exterior was very professional and I am extremely pleased with the final results. After trying to get many quotes on James Hardy siding it became clear quickly that GS was a certified installer and held themselves to the high installation standards of the product manufacturer. Many other companies quoting inferior products like vinyl siding were not far off GS Exterior's competitive bid. Their price wasn't the lowest but after seeing them at the Home and Garden show and comparing them to many other quotes they were by far the most professional. They had three teams work on our house. Demo and Install, Gutters, and Painting. All three teams were punctual, courteous and did excellent work. This was a significant investment so we depended on a job well done. These guys far exceeded our expectations. The work was scheduled and completed ahead of time and we could not be more pleased with with the quality of the finished product. Keith and Marvin are professionals and deserve the respect they have earned from us. This is an absolute yes company. Our thanks to GS Exterior Experts for helping us to be proud of our home.

April 21, 2015

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Frequently Asked Questions

Yes, we absolutely handle all required permits for your exterior renovation project. We understand that navigating local regulations can be complex, so we manage the permit coordination process for full siding replacements and other exterior work to ensure everything is compliant and stress-free for you.

We install a wide range of siding types to suit any home and preference. Our specialties include James Hardie fiber cement, LP SmartSide, stucco, brick & stone veneer, wood, vinyl, metal, and steel siding. We also offer specialized options like Artisan, Nichiha, and EverLog Concrete Log siding, ensuring we have the perfect solution for your home.

Absolutely, replacing damaged or outdated siding is one of our core specialties. We conduct a thorough assessment to determine the best approach, whether it's repairing specific sections or a complete siding replacement. Our goal is to restore your home's protection and curb appeal with durable, high-quality materials built for Colorado's climate.

Yes, inspecting for moisture damage and other issues behind your existing siding is a critical part of our process. When we perform a full siding replacement, we always strip down the old material to assess the underlying structure, insulation, and moisture barrier. If we find any problems, we address them before installing your new siding.

Yes, we absolutely install and replace soffit and fascia systems as part of our comprehensive exterior services. We ensure these components are properly integrated with your new siding, providing essential ventilation, protection against moisture intrusion, and a clean, finished look for your home's exterior.

FAQ content may be generated based on the Pro's Houzz profile and website.

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GS Exterior Experts