San Dimas sits where the valley floor meets the San Gabriel foothills, with equestrian neighborhoods, riding trails and hillside homes stretching from the canyon above town down toward Bonelli Regional Park and Puddingstone Reservoir. Work as a roofing contractor in San Dimas, CA follows that terrain: fire and wind exposure up high, barns and stables on horse lots, and older tracts closer to Bonita Ave. The city had 34,924 residents in 2020.
San Dimas is about 40 minutes east of our Rosemead Blvd base, roughly 20 miles, so visits are booked ahead and grouped with La Verne and Glendora.
Brush, canyon wind and Class A rules on foothill lots
Homes near the foothills and around the Bonelli hills sit beside dry brush that burns hot in late summer and fall. Chapter 7A of the California Building Code governs reroofs on parcels inside a mapped Fire Hazard Severity Zone. It calls for a Class A assembly, and attic vents need ember-resistant screening, with openings sized between 1/16 and 1/8 inch under the code. Downslope and Santa Ana winds, strongest from October through March, push embers and lift loose roofing at the same time.
- Open eave and gable vents that draw embers into the attic.
- Gutters full of dry leaves and needles right at the roof edge.
- Wind-lifted shingles and loose concrete tile at ridges and rakes.
- Barns, stables and sheds with metal or rolled roofing near open land.
The risk sits right next door. The 2014 Colby Fire burned the foothills above neighboring Glendora and Azusa, and CAL FIRE maps Very High zones along that same mountain front. Homes on the north side of San Dimas back onto the same chaparral, so a reroof there is a chance to close gaps under tile, swap old eave vents for screened ones and choose a Class A product that suits the house.
Roofing services for San Dimas, CA properties
Fire-Resistant Class A Roofing
Foothill parcels below San Dimas Canyon and around the Bonelli hills may require a Class A roof assembly and ember-blocking vents when reroofed inside a mapped hazard zone.
Wind Damage Roof Repair
Gusts off the San Gabriel foothills loosen shingles and concrete tile at San Dimas ridges and rakes during the October-to-March wind season, often on the same nights fire risk peaks.
Metal Roof Repair
Barns, stables and sheds on San Dimas equestrian lots often carry metal roofs with worn fasteners and rusted laps, and resealing them keeps feed and tack dry through winter.
Roof Tune-Up
A pre-season tune-up clears dry debris, checks vent screens and resets loose tile before fire and rain season, which matters more on foothill streets than on the valley floor.
Gutter Guards
Needles and dry leaves in gutters sit right where embers land on a foothill roof, so ember-resistant guards reduce fire risk here and keep downspouts clear in heavy rain.
Tile Underlayment Replacement
Concrete tile on San Dimas hillside homes usually outlasts its underlayment, so a lift-and-relay with new underlayment and flashing restores the roof without buying new tile.
Metal Roofing
Equestrian lots in San Dimas carry barns, stalls and hay sheds alongside the house, and a standing seam or ribbed metal roof suits those outbuildings, sheds water fast and holds up to foothill wind.
Fire-rated reroofs, repairs and seasonal upkeep
Most foothill calls end with a roof replacement built as a Class A assembly with upgraded vents, or a tile lift-and-relay over new underlayment. For leaks and wind damage, our roof repair service reseals and replaces lifted shingles, resets tile and fixes flashing. A limb on the roof gets a tarp first under emergency roof repair.
A yearly roof maintenance visit before fire and rain season clears gutters and valleys, checks vents and resets loose tile, which matters more here than on the valley floor.
How a San Dimas visit is scheduled
When you call (725) 745-8803 or request a quote, we ask about access, gates and animals on horse properties before setting a date. On site we inspect the house, any outbuildings, the vents and the gutters, and photograph each issue. The written quote itemizes permits, deck repair and vent upgrades on their own lines.
Hillside driveways and gated equestrian lots can limit where a bin or trailer fits. We settle staging before the start date, and on fire-zone reroofs we list the rated roof assembly and vent products by name so you have them for your records.
Roof trouble in San Dimas?
Call with your address. About 40 min (20 mi) from our Rosemead Blvd base, with same-day or next-day visits when crews are free.
- 4.9 from 48 Google reviews
- Based on Rosemead Blvd
- Photos and a written quote before work
Who handles roof permits in San Dimas?
San Dimas, as an incorporated city, handles roof permits through its building division or refers you to the reviewing office. Check CAL FIRE's map for your parcel's hazard zone and confirm current rules with the city. If a permit is needed, we take care of the paperwork and the inspection.
San Dimas incorporated in 1960 and covers about 15.4 square miles, from the San Gabriel Mountains south to Walnut, with La Verne and Pomona to the east and Glendora and Covina to the west. Arrow Highway, San Dimas Ave and historic Route 66 carry local traffic, and the 210 and the 57 meet near Bonelli Regional Park, home of Raging Waters. Most homes fall in the Bonita Unified School District, while the Via Verde neighborhood south of Puente Ave belongs to Covina-Valley Unified. The 2020 Census counted 13,033 housing units across those neighborhoods.
Reviews from San Gabriel Valley customers
4.9★ from 48 Google reviews (checked Nov 2026)
“I worked with Tanner, and he stayed professional from start to finish. He was patient, easy to talk to, and flexible, and he made time around my busy schedule. When we got to the financing part, Brandon went the extra mile to help me look at every available option and explain the process clearly. …”
“Our flat garage roof had a leak, and since the main roof was already aging, we decided to handle the full roofing project at the same time and upgrade from asphalt shingles to a metal roofing system. …”
Roofing questions from San Dimas
Does my San Dimas reroof have to be Class A?
Yes, when the parcel falls inside a mapped Fire Hazard Severity Zone; a reroof there needs a Class A assembly and vents that block embers. Many shingle, tile and metal products qualify when installed as rated. Check your parcel on CAL FIRE's map and confirm with the city.
Do you roof barns and stables in San Dimas?
Yes. Barns, stables and sheds on equestrian lots get the same inspection as the house, whether they wear metal, rolled roofing or shingle, and each is priced on its own. Tell us about horses on the property so we can plan around noise and keep debris out of stalls and paddocks.
