Find where your Walnut roof is leaking
3 licensed roofing contractors are based in Walnut. See Walnut's rain and storm numbers below, then the list of local companies.
Licenses checked · California Contractors State License Board
16.7 innormal precipitation a year
Walnut's rain, by the numbers
Walnut sees about 16.7 inches of rain most years.
February alone brings roughly 4.3 inches, more than any other month on the calendar.
A roof inspection ahead of that stretch is cheaper than a repair during it, for any Walnut homeowner watching for the first drip.
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 4 mi away.
Storm risk near Walnut
On FEMA's county-level hazard index, wind risk around Walnut comes in at Relatively Moderate.
A hard wind event can lift shingle edges or shift flashing on a Walnut 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 Walnut homeowner after a windy night.
- Hail
- Relatively Moderate
- Strong wind
- Relatively Moderate
- Wildfire
- Very High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Roof leak repair contractors based in Walnut
Alphabetical by business name, nothing more. Speed and quality aren't part of the sort.
Golden East Roofing & Construction INC
Roofing contractor
- License
- C-39 Roofing · 946835
- Since
- 2010
- Expires
- May 31, 2028
- ZIP
- 91789
SJD&B INC
Roofing contractor
- License
- B General Building / C-39 Roofing · 1001950
- Since
- 2015
- Expires
- Mar 31, 2027
- ZIP
- 91789
U S A Roofing INC
Roofing contractor
- License
- B General Building / C-39 Roofing · 937639
- Since
- 2009
- Expires
- Sep 30, 2027
- ZIP
- 91789
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?