Affton is the heart of South County—a tight-knit community with tree-lined streets and well-maintained homes, many built in the 1950s through 1970s. These classic ranch homes and split-levels have solid bones, but roofs from that era are long past their lifespan. Even homes re-roofed in the 1990s are now due for replacement.
Our South County headquarters at 500 S South County Center Way is literally in your backyard. We’re not a company that swoops in after a storm and disappears—we’ve been part of this community for over 50 years. Our trucks are on Gravois and Mackenzie every day. Our crews live in Affton, Mehlville, and Oakville. When something goes wrong, you know where to find us.
Older homes often have unique roofing challenges: multiple layers of shingles that need removal, outdated ventilation systems, or original decking that needs inspection. We’ve seen it all, and we approach every job with the care it deserves—no cutting corners, no skipping steps.
Whether you’re dealing with storm damage, an aging roof, or a leak that just won’t quit, Gallagher Bros delivers the same quality workmanship we’ve been providing to South County families since 1973.
Roof Replacement for Older Homes: Many Affton homes are on their second or third roof. We handle complete tear-offs, including removing multiple shingle layers if needed. Every replacement includes a thorough inspection of the underlying deck, replacement of damaged plywood, and installation of proper ice and water barriers. We use premium shingles from GAF, Owens Corning, and CertainTeed.
Storm Damage Restoration: South County gets hit by the same hailstorms and wind events as the rest of the St. Louis metro. When your roof takes damage, we handle the insurance claim process from initial inspection through final payment. Our documentation is thorough, our communication is clear, and we fight to get you the coverage you deserve.
Roof Repair: Sometimes you don’t need a full replacement—just a targeted repair to stop a leak or replace wind-damaged shingles. We provide honest assessments. If a repair will solve the problem and buy you more years, that’s what we’ll recommend.
Gutters, Siding & Windows: Your roof doesn’t work alone. Clogged gutters cause water damage. Aging siding lets moisture into your walls. We handle complete exterior projects, and bundling services often makes financial sense.
Gallagher Brothers Construction serves Affton and the entire South County area, including zip codes 63123 and 63125. Whether you’re near Grant’s Farm, Affton Athletic Association, St. Dominic, or anywhere along Gravois or Mackenzie, we’re just minutes away.
We also serve neighboring communities including Mehlville, Oakville, Crestwood, Webster Groves, Kirkwood, and South County.
Get your free roof inspection: Call (314) 646-8015 or fill out the form below. We’ll come out, assess your roof honestly, and give you a clear estimate—no pressure, no gimmicks.
EXCELLENT
Based on 669 reviews
Posted on Google![]()
Flora HigginsTrustindex verifies that the original source of the review is Google.
We could not have chosen a better company to handle the job. Kris was great to work with. Took the time to let us make decisions. Carlos and his crew were absolutely amazing to work with. Paid attention to every detail. The clean up afterwards was amazing. Kris followed up and walked the house to make sure we were satisfied.Posted on Google![]()
Logan LatinoTrustindex verifies that the original source of the review is Google.
What a unbelievable experience! Curtis and his team did an amazing 1 day job, very fast, and super reliable! If I could give them 10 stars I would!Posted on Google![]()
Stacey KrafftTrustindex verifies that the original source of the review is Google.
I used Gallagher Bros for my home roof replacement after a hail storm. What I expected to be a nightmare was the smoothest process EVER! I worked with Kris Fisher from Gallagher and he made the entire process seamless! He was there from day one and even followed up with me several times to ensure I was happy with everything. I will be using Gallagher in the future for some siding (non insurance related) and I will also be referring Gallagher Bros and Kris Fisher to all my friends and family!! Job well done … satisfied 100%Posted on Google![]()
Mike and Nicki SchillingTrustindex verifies that the original source of the review is Google.
We've had our roof replaced and the roofs on two of our rentals. They did an outstanding job on all three. Very detail-oriented and they will work with your insurance company. Rex has been our contact for all three and made a painless experience!Posted on Google![]()
Marty KleinTrustindex verifies that the original source of the review is Google.
I could not be happier with these professionals from start to finish. They guided me and worked with my insurance company. The work was superb and the cleanup was wonderful. I highly recommend this company.Posted on Google![]()
Austin EverettTrustindex verifies that the original source of the review is Google.
Had roof and gutter system including facia and soffit replaced. Thanks to the crews that had to deal with the terrible heat to complete the tasks. Also thanks to Scot Hollrah for his expertise in answering my questions and managing the project to completion.Posted on Google![]()
jill steigerTrustindex verifies that the original source of the review is Google.
Great experience and workmanship. Highly recommend. Curtis was great to work with. Besides giving my grandma a bid on the roof and gutters, he got a bid for the ceiling damage inside and worked with her insurance company to get it all approved.Posted on Google![]()
Joan WidmannTrustindex verifies that the original source of the review is Google.
The experience was great! From the salesman (Scot) to the roofers. They did an amazing job. Left it so so clean. Thank you so much.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