The Metro East region of Illinois encompasses the communities on the eastern side of the St. Louis metropolitan area, spanning St. Clair and Madison counties. Major communities include Belleville, Fairview Heights, Collinsville, O’Fallon, Swansea, and Shiloh. The region offers a mix of historic downtowns, established mid-century neighborhoods, and rapidly growing modern subdivisions, particularly in communities near Scott Air Force Base.
Gallagher Bros Construction has been serving Metro East homeowners since 1973 and is fully licensed and insured in the State of Illinois, providing the same quality of service east of the river that we are known for throughout St. Louis.
The Metro East region experiences some of the most severe weather in the greater St. Louis area, with frequent hail storms, high winds, and heavy rainfall during the spring and summer months. This weather pattern creates a steady demand for both storm damage repairs and proactive roof replacements throughout the region. The area’s housing diversity, from Belleville’s historic homes to Shiloh’s modern subdivisions, requires a contractor with broad expertise across residential and commercial applications. As a company licensed in both Missouri and Illinois, Gallagher Bros Construction provides seamless service to Metro East homeowners, handling everything from initial inspection through insurance claims coordination and final installation.
Gallagher Bros Construction offers comprehensive exterior services throughout Metro East Illinois, including roof replacement, roof repair, storm damage restoration, siding installation, gutter systems, gutter guards, and window replacement. We are fully licensed and insured in Illinois, and every project is backed by our 5-year workmanship warranty in addition to manufacturer material warranties.
Whether you need an emergency roof repair after a storm or you are planning a full roof replacement, our team provides honest assessments, transparent pricing, and quality craftsmanship on every job. We work directly with insurance companies on storm damage claims and guide homeowners through the process from initial inspection to final installation.
EXCELLENT Based on 650 reviews Posted on Lisa MohrTrustindex verifies that the original source of the review is Google. Curtis and Bob from Gallagher did a great job from start to finish. Great quality of work and materials used on our project which included a new roof, gutters and siding.Posted on VICKIE VALENTINETrustindex verifies that the original source of the review is Google. Gallagher Bros. did all the replacements to my roof, siding, gutters, and downspouts from the storm 3/14/25. Willie Wyninegar was my contact person. What a great guy. Very personable and knows his stuff. They dealt with the insurance company which was very helpful.I would highly recommend them. Their work is great quality and absolutely worth going with them. Vickie ValentinePosted on Sandy SilveyTrustindex verifies that the original source of the review is Google. Gallagher’s did a great job on my house including new roof, siding and gutters. The staff and the workers were friendly and wonderful to work with. I would definitely use them again and refer them in the future.Posted on Trina CornellTrustindex verifies that the original source of the review is Google. We had severe hail damage to our roof and siding from the spring storms of 2025. Gallagher Bros. Construction was recommended to us as a great company to use. We truly had a great experience working with Rex and the work crews that came to replace our roof and siding. Both projects, with the roof in November and the siding in February, were completed within the span of two days. Both jobs were done extremely well! The best part about working with Gallagher is their work with the insurance companies. They worked on our behalf to help us get the maximum amount of money we needed from our insurance to pay for the work completed. Everything was handled professionally from start to finish - and we could not be happier with the work completed! We will definitely be recommending Gallagher Bros. Construction to anyone that needs their services - and we would love to work with them again if the need arises!Posted on Joe ChickTrustindex verifies that the original source of the review is Google. Rob and the crew at Gallagher bros did an excellent job replacing my roof. I appreciated their attention to details, quality work, and clean up efforts. I would definitely recommend them to any homeowner!Posted on Jerry BehanTrustindex verifies that the original source of the review is Google. Bob and team with Gallagher Bros were friendly to withvthroughought the roofing and gutter replacement process.Posted on Catherine JochensTrustindex verifies that the original source of the review is Google. I can’t say enough great things about Gallagher and Bob Halstead. Bob is very personable, knowledgeable and straight up. I was pleased with the amount of coverage we got from insurance due to hail damage, and Bob was instrumental in assisting with that. All in all, I give them my highest recommendation, and we are so pleased with our new roof!Posted on Rex WashburnTrustindex verifies that the original source of the review is Google. What a great experience! Bob and Gallagher Bros made a new roof effortless. They were partners the entire way and the quality of work was perfect!Posted on Kevin walkerTrustindex verifies that the original source of the review is Google. Great company to work with. Very easy process to have roof replaced after storm damage. Bob had great customer service and kept us informed during the whole process.Posted on Jacob PlankTrustindex verifies that the original source of the review is Google. Great workVerified 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