10 top-rated leak repair contractors serving O'Fallon
O'Fallon, MO doesn't have a roofer license page, so what's below came from a Google Maps result instead. 10 companies cleared the bar we set, their ratings landing at 4.9 stars on 2,138 reviews. A good rating won't get a crew to O'Fallon any faster during a storm, so say it's an active leak when you call.
Google Maps ratings checked · How we rank
44.4 innormal precipitation a year
Rainfall in O'Fallon
O'Fallon averages 44.4 inches of rain a year, per NOAA's 1991-2020 climate normals.
May is typically the wettest single month, averaging 5.1 inches on its own.
That's the stretch of the year a small, contained leak in O'Fallon tends to turn into a stain worth calling about.
Data: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020 (annual/seasonal and monthly, by station) (1991-2020), from the nearest NOAA station 5.9 mi away.
What federal hazard data shows for O'Fallon
On FEMA's county-level hazard index, wind risk around O'Fallon comes in at Very High.
A hard wind event can lift shingle edges or shift flashing on a O'Fallon roof just enough to start a leak that wasn't there the week before.
A post-storm look at the roof is a reasonable habit for any O'Fallon homeowner after a windy night.
- Hail
- Relatively High
- Strong wind
- Very High
- Hurricane
- Very Low
- Wildfire
- Very Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Top-rated leak repair contractors serving O'Fallon, MO
Strongest Google rating first, discounted when a business has barely been reviewed; that's not a license check, so confirm the paperwork before anyone gets on your roof.
RoofWorx - Wentzville
Roofing contractor
- Google rating
- Reviews
- 78
- Area
- Wentzville 63385
Stonebridge Roofing
Roofing contractor
- Google rating
- Reviews
- 402
- Area
- Weldon Spring 63304
Prrotect Roofing
Roofing contractor
- Google rating
- Reviews
- 391
- Area
- Cottleville 63304
Shamrock Roofing and Construction
Roofing contractor
- Google rating
- Reviews
- 318
- Area
- Lake St Louis 63367
Donovan Roofing & Construction
Roofing contractor
- Google rating
- Reviews
- 246
- Area
- St Peters 63376
Lookup Roofing LLC
Roofing contractor
- Google rating
- Reviews
- 59
- Area
- O'Fallon 63366
Correll Roofing Co.
Roofing contractor
- Google rating
- Reviews
- 105
- Area
- O'Fallon 63368
Archway Contractors
Roofing contractor
- Google rating
- Reviews
- 236
- Area
- O'Fallon 63366
Berry Construction Roofing & Storm Repair
Roofing contractor
- Google rating
- Reviews
- 220
- Area
- O'Fallon 63366
Quality Roofing & Contracting - Roofing Company in O'Fallon
Roofing contractor
- Google rating
- Reviews
- 83
- Area
- O'Fallon 63366
Questions to ask a {city} roof leak repair company
- Can you find the actual source before you quote a repair, not just patch where the ceiling is wet?
- Is this a contained repair, or does it point to a bigger problem with the roof?
- Will you check the attic and insulation for existing water damage, not just the roof surface?
- What's your timeline if it's actively raining versus once it's dry?
- Do you offer a temporary tarp while a full repair is scheduled?
- What's covered by a workmanship warranty on the repair itself?