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GS Exterior Experts

4.9
(310 reviews)

Business Details

9083 W Peakview Dr, Littleton, CO
80123, United States
(720) 683-6288
https://gsexteriorexperts.com/

About

Siding ContractorRoofing ContractorGutter Installation ServiceScreen Doors & WindowsDeck Builder
At GS Exterior Experts, we are your trusted roofing and siding contractors serving Littleton, CO, and the surrounding Denver metro area. Specializing in roof repairs, replacements, and James Hardie siding installations, we use premium materials to enhance the durability, energy efficiency, and curb appeal of your home. Our skilled team delivers personalized solutions tailored to your vision and budget, ensuring exceptional craftsmanship from start to finish. From siding, windows, and decks to storm restoration and exterior upgrades, GS Exterior Experts is committed to helping homeowners protect and beautify their homes with professional, reliable service.

Location

GS Exterior Experts
9083 W Peakview Dr, Littleton, CO
80123, United States

Hours

Monday7:00 AM - 8:00 PM
Tuesday7:00 AM - 8:00 PM
Wednesday7:00 AM - 8:00 PM
Thursday7:00 AM - 8:00 PM
Friday7:00 AM - 8:00 PM
Saturday7:00 AM - 8:00 PM
Sunday7:00 AM - 8:00 PM

Reviews

4.9
310 reviews
5 stars
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1 star
9
  • JC
    Joanne Chang
    1 day ago
    5.0
    We recently hired GS to install all new Hardie board and windows for our home in Summit County. Oswald and his team did a great job from start to finish, answering any and all questions and ensuring we were happy with the work. Our home looks amazing -- a complete 180 -- and we're so glad we went with GS and had the opportunity to work with Oswald. We would definitely use them again!
  • BH
    Brigitte Howe
    3 days ago
    5.0
    GS Exterior Experts installed James Hardie siding for us and we are very pleased with both the process and the result. Scheduling and contracting were easy, and the installation was efficient and on time. Due to a knowledgeable, hardworking and professional project manager (Oswald Hernandez), the communication on this project was flawless. Oswald was very responsive, easy to reach and kept the whole process flowing through his interactions between us, the office and various contractors/subcontractors. I would hire this company again, but only if Oswald was our project manager on the next project. I also want to give a shoutout to Wilson and his crew, who were the siding installers on our project. They worked tirelessly, kept the work areas clean, were very proficient at the various aspects of their job, and if we had specific requests, they were quick to address them. We are happy to have selected GS Exteriors after interviewing several siding contractors and highly recommend them.
  • WD
    Wes Donnell
    6 days ago
    5.0
    I did a full siding, soffit, and fascia replacement with James Hardie, and GS was excellent. Oswald was a pleasure to work with -- very professional, friendly, and responsive. The crew worked very efficiently: start to finish in less than one week, much quicker than I anticipated (or have heard of for similar projects)! I was also impressed with the professionalism before the project began -- appointments were kept, my questions were patiently answered (and real-world examples were provided!), and they flexibly moved up the project to fit my schedule. Highly recommended.
  • SA
    Steve Anderson
    6 days ago
    3.0
    We contracted with GS Exterior Experts in May of 2025 for a complete siding job, 23 new windows, and all new gutters. In August of 2025 windows had arrived and the on-site work started. Almost immediately they discovered that one window was missing and four were completely the wrong size. So they went as far as they could until new windows arrived, and work stopped before the end of August of 2025. The wrong-sized windows were stacked in my garage and they said they would pick them up later. After multiple calls they finally picked up the windows out of our garage in December of 2025, but only after I said I would donate them to Habitat for Humanity. I kept asking but could not get a status update on when the job would be finished. Finally, in February of 2026 (5.5 months after work had stopped) they came back and finished the job. There are multiple important things to note about the job that GS did: 1. The siding was done very well and professionally. Jaime, the lead for the siding crew kept up good communication with us, let us make choices along the way, and responded quickly to items we needed corrected. The only issue I had with them is they were careless with some of their scaffolds, which resulted in roof leaks in two bedrooms, but GS did come back to fix the leaks and the interior paint that was damaged. 2. The subcontractor that did the window install (Eliseo was the lead) did a great job on the install, even though they had issues with the windows being wrong. 3. As a company, GS doesn't really do windows even though they say they do. Before the windows were ordered they had their main window guy (Dennis) come out to do detailed measurements, and I wrote down all the numbers as I followed him through the house. Unfortunately it appears that they didn't actually use those numbers when they ordered them. Before they ordered the windows I asked several questions that no one seemed able to answer. 4. GS ordered the windows through a lumber yard, and when they arrived at the lumber yard GS just wanted to schedule the delivery and install. I had suggested they should send someone over to the lumber yard to confirm measurements, but for some reason GS ignored that obvious idea. Instead, they scheduled times for us and the crews of people to be here, which then had to be cancelled with a window was missing or the wrong sized. 5. GS was horrible at communication with us as a customer. During the long wait I sent multiple texts and emails. Some were ignored, and those that were not ignored were answered with various delays or excuses, with no actual status updates. The main person we were dealing with (who was also who we signed the contract with) was apparently fired right before the new windows arrived in Feb-2026. Overall, I would not hesitate to recommend GS for James Hardie Siding and gutter replacement. On the other hand, I don't think I would ever recommend them for replacement windows.
  • JC
    Jeremy Cox
    Apr 13, 2026
    5.0
    We recently had GS install Hardie Siding on our home and we are so happy with the entire experience. Jaelynn was our representative who went over and beyond to make sure we got exactly what we wanted. Her customer service was outstanding and she was an absolute pleasure to work with. Our project manager Oswald did a fantastic job as well. The crews were very diligent and exceptionally detail oriented. I highly recommend using GS for your next project as we will definitely use them in the future for ours.

Frequently Asked Questions About GS Exterior Experts

What services does GS Exterior Experts provide?

GS Exterior Experts specializes in roofing repairs, replacements, James Hardie siding installations, windows, decks, storm restoration, and exterior upgrades.

Where is GS Exterior Experts located?

GS Exterior Experts is located at 9083 W Peakview Dr #2, Littleton, CO 80123, USA.

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