St. Peters’ Trusted Roofing Contractor
- 5-Year Workmanship Warranty
- Locally Owned Since 1973
- Licensed & Insured in Missouri & Illinois
Why St. Peters Homeowners Choose Gallagher Bros
St. Peters has grown from a quiet farming community into one of St. Charles County’s largest cities. That growth brought thousands of homes built in the 1980s, 1990s, and 2000s—many of which are now hitting the 20 to 30-year mark when roofs typically need replacement.
We’ve worked on roofs throughout St. Peters for decades, from the established neighborhoods near Mid Rivers Mall to the newer developments along Mexico Road. We understand the building styles here, the HOA requirements many subdivisions have, and the specific wind and hail patterns that affect St. Charles County every spring and summer.
When a storm rolls through—and they always do—you need a roofer who answers the phone, shows up when promised, and doesn’t disappear after cashing your insurance check. That’s been our commitment to St. Louis families since 1973, and it’s why we’ve completed over 15,000 roofing projects across the region.
Our St. Charles County office is located just minutes away in O’Fallon, MO at 609 Westridge Dr. When you call Gallagher Bros, you’re getting a neighbor—not a national franchise or a storm-chasing crew from out of state.
Roofing Services in St. Peters
Roof Replacement: Is your St. Peters home showing its age? Curling shingles, granule loss in the gutters, or daylight visible in the attic are signs it’s time. We handle complete tear-offs with premium materials from GAF, Owens Corning, and CertainTeed. Most St. Peters roof replacements are completed in one to two days with full cleanup.
Roof Repair: Not every problem requires a full replacement. Leaks around vents, damaged flashing, or missing shingles can often be repaired quickly and affordably. We’ll give you an honest assessment—if a repair makes sense, we’ll tell you. If your roof is past its useful life, we’ll tell you that too.
Gutters & Siding: Your roof is part of a system. Clogged or damaged gutters cause water to back up under shingles. Failing siding lets moisture into your walls. We handle the complete exterior envelope so everything works together.
Serving St. Peters & Surrounding Communities
Gallagher Brothers Construction serves homeowners throughout St. Peters and the 63376 zip code. Whether you’re near the Rec-Plex, Spencer Creek, the Streets of St. Charles, or anywhere along I-70, our team is ready to help with your roofing project.
We also proudly serve nearby St. Charles County communities including Cottleville, O’Fallon, MO, St. Charles, Weldon Spring, Dardenne Prairie, and Lake Saint Louis.
Ready for a free roof inspection? Call us at (314) 646-8015 or fill out the form below. We’ll assess your roof’s condition and provide an honest recommendation—no pressure, no obligation.