Find where your Alta Loma roof is leaking
9 licensed roofing contractors are based in Alta Loma. See Alta Loma's rain and storm numbers below, then the list of local companies.
Licenses checked · California Contractors State License Board
11.6 innormal precipitation a year
Rainfall in Alta Loma
Alta Loma averages 11.6 inches of rain a year, per NOAA's 1991-2020 climate normals.
February is typically the wettest single month, averaging 3.1 inches on its own.
That's the stretch of the year a small, contained leak in Alta Loma 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 5.6 mi away.
What federal hazard data shows for Alta Loma
Wind-driven rain during a hurricane finds gaps in a Alta Loma roof that straight-down rain never reaches, especially around flashing and vents.
That's worth remembering the next time a storm heads toward Alta Loma.
- Hail
- Relatively Moderate
- Strong wind
- Relatively High
- Wildfire
- Very High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Alta Loma roofing companies for leak repair
Alphabetical by business name, nothing more. Speed and quality aren't part of the sort.
Allstar Roofing CO
Roofing contractor
- License
- C-39 Roofing · 448361
- Since
- 1983
- Expires
- Nov 30, 2027
- ZIP
- 91737
American Roof Tops INC
Roofing contractor
- License
- B General Building / C-39 Roofing · 844118
- Since
- 2004
- Expires
- Aug 31, 2028
- ZIP
- 91701
Competition Roofing INC
Roofing contractor
- License
- B General Building / C-39 Roofing · 638220
- Since
- 1992
- Expires
- Mar 31, 2027
- ZIP
- 91737
Hyt Pros
Roofing contractor
- License
- B General Building / C-39 Roofing · 1092712
- Since
- 2022
- Expires
- Jun 30, 2028
- ZIP
- 91701
Keller Roof CO
Roofing contractor
- License
- C-39 Roofing · 741945
- Since
- 1997
- Expires
- Oct 31, 2027
- ZIP
- 91737
Michael Cooke Roofing
Roofing contractor
- License
- C-39 Roofing · 1119771
- Since
- 2024
- Expires
- Apr 30, 2028
- ZIP
- 91701
Ridgeline Roofing
Roofing contractor
- License
- C-39 Roofing · 778793
- Since
- 2000
- Expires
- May 31, 2028
- ZIP
- 91701
Roofquest
Roofing contractor
- License
- C-39 Roofing · 738656
- Since
- 1997
- Expires
- Jul 31, 2027
- ZIP
- 91701
Tom McGrail Roofing INC
Roofing contractor
- License
- C-39 Roofing · 673647
- Since
- 1993
- Expires
- Jul 31, 2027
- ZIP
- 91701
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?