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Thank you for visiting us today. We look forward to helping you with your construction needs.
We want to be the last roofing and siding contractor your home will ever need!

$150 cash rebate valid on full roofing or siding projects only. Partial repairs or section replacements do not qualify.
Posted on Kevin CannonTrustindex verifies that the original source of the review is Google. Had a small roof repair after a home inspection that needed addressed within the month. They answered my call right away and were happy to help, fitting us in their schedule almost instantly. Luke and Alex were super nice and professional both on the phone and in person. Some poorly timed snow storms delayed them a few days but they were great at communicating what their plans were. Highly recommend these guys!Posted on SCTrustindex verifies that the original source of the review is Google. GCS went out right away to assess my roof, made the repair and gave ma great price for a new roof. They sent me photos during and upon completion of thr process. I dont live there full time, but my neighbor said they worked fast and furious to get it done. They did my roof during the winter, and completed it before the weather became a burden. Would definitely use them again for other projects I have coming up.Posted on Norman chesserTrustindex verifies that the original source of the review is Google. We hired this general contractor for our home renovation, and the results exceeded our expectations. The team was punctual, skilled, and communicated clearly throughout the project. They stayed on schedule and within budget while delivering high-quality workmanship. The entire process was smooth and stress-free. I would confidently recommend them for any construction or remodeling needs.Posted on Barbara FrananoTrustindex verifies that the original source of the review is Google. Our barn roof was damaged by a windstorm in December 2025. Our insurance appraiser estimated the cost to replace the damaged panels was less than our deductable so we were responsible out of pocket for the repairs. We contacted GCS, and Alex came out to give us an estimate for the repairs. His bid for parts and labor was less than the insurance estimate. We have also had leaks in other areas of the roof. Alex noticed the origional installers had used screws that were too small. He suggested removing the screws and replacing with the larger proper size and installing aditional screws to spec fastener pattern. They were able to come right away before weather got bad again, and did an outstanding job. We were very impressed by the level of professionalism and ease of interaction. We have no complaints! Thanks!Posted on Dan MaurerTrustindex verifies that the original source of the review is Google. GCS construction completed three separate projects at my home. New vinyl siding, new shed, and repair of a sagging garage door header. Alex and his crew did a great job and am very happy with the results of all the projects. Work was done in a professional and timely manner and I was kept apprised of what they were doing and they were available to answer all of my questions. I highly recommend GCS!Posted on Anne ETrustindex verifies that the original source of the review is Google. Alex did a phenomenal job on my home sealing and siding. He fixed the issue I had around my sliding glass door beautifully also.Posted on Laurie McGrawTrustindex verifies that the original source of the review is Google. I can't say enough about this company. They go above and beyond in customer service. We have worked with them on 3 projects (one of which is not complete yet and I will be writing a review when it is) They represent great quality workmanship, honesty, integrity, job completed in a timely manner, they clean up after themselves you will not have to walk around picking up empty drink bottles, garbage and debris, they take pride in what they do, you will not find them standing around on there cell phones. Luke, Alex and Caleb put up with all of my questions and non sense and are always kind and patient. I have not seen anything they are not capable of doing or willing to take on and do it well. Thank you guys for a fantastic experience. Highly recommend.Posted on Sandra ChavezTrustindex verifies that the original source of the review is Google. Amazing service definitely recommend!!!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Business Hours
Open 8am – 5pm Mon – Friday
Closed Sat – Sun: (nights/weekends or emergency by appointment only)
Phone: (208) 875-5044
Email: Please use our Contact Us form above.
We proudly serve: Moscow, Troy, Genesee, Potlatch, Juliaetta, Kendrick, Deary, and nearby Latah County area cities.
Often, homeowners call us because they’ve been told a roofing, siding, or pole barn job can’t be done a certain way or it’s just too expensive to consider from other Idaho building companies.
Need a second opinion for any reason at all about work that needs to be done to your home or work that has already been done to your home? – Give us a call and our building knowledge will win you over!
We know that your home exterior needs are unique and that they’re very important to you. That’s exactly why we’ll carefully assess your specific requirements to provide a tailored building solution – just for you!
Let’s face it – roofing, siding, and home aesthetics are expensive! We not only build with the best products and extreme attention to detail, but we have warranties in place that protect you after the installation.
