Roofing Contractor in San Dimas, CA
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- Free estimates
- Same day or next day service
- Photos of what we find

At the foot of the San Gabriel Mountains, San Dimas has a downtown along Bonita Avenue built in an Old West style and neighborhoods where horses are still kept on large lots. Corrals, barns and wide ranch-style houses are part of the picture, and the Western storefronts downtown have low roofs and wood awnings that drain close to the sidewalk. So is the open brush behind some of the foothill streets.
Our route starts on Pacific Coast Highway in Torrance and covers 48 miles, around 90 minutes. Please call first so scheduling can be confirmed. Same day or next day service is offered when the schedule allows.
Foothill wind, brush and the San Dimas permit counter
Santa Ana winds reach the foothills with force, loosening shingle edges and moving tile. Some streets back onto brush, and Cal Fire's severity zone maps decide where fire-rated roofing is required on a re-roof. The permit side of a re-roof is dealt with by us through the City of San Dimas; confirm your address. Our Los Angeles County service area page shows how rules differ across the county, and our Santa Ana wind checklist lists what to check after a blow.

Large lots, long eaves and outbuildings
Horse-property houses are often wide single-story ranch homes with long eaves. The roof area is large, and a leak can hide a long way from the stain. Outbuildings add more roofs, usually metal or composition. During an inspection we check each one, photograph problems and explain repair and replacement options. When a fix will last, it beats a new roof.
San Dimas Canyon Road, Foothill Boulevard and Bonelli Park
San Dimas Canyon Road runs north from the city into the foothills, and Foothill Boulevard crosses the northern part of town. Homes along the canyon and the northern edge sit nearest brush, while Frank G. Bonelli Regional Park and Puddingstone Reservoir mark the southern boundary. The city incorporated in 1960, and its older ranch-style homes have been re-roofed at least once. Lots along the foothill streets often have long gravel or dirt drives, gates and animals, so we ask about the access before we plan the trip. The City of San Dimas handles permits for a re-roof.
A visit to a horse-property lot
Call first. We confirm a window and ask about gates, animals and where a truck can park. We protect landscaping and driveways, keep tools away from corrals, clean up thoroughly and show you photos. Estimates and roof inspections are free.

Wide ranch roofs and the Bonita Avenue downtown
Most older homes on the larger lots are wide single-story ranch houses, which means a lot of roof area, long valleys and several roof planes. Downtown is a different animal. Bonita Avenue's Western-style storefronts have low roofs with wood-framed awnings that drain close to the sidewalk, so flashing at the wall and the edge matters more than the field of the roof.
What San Dimas roofs need most
Roof Replacement
Large ranch-style roofs on horse-property lots are a big-area job, and foothill lots may need a fire-rated assembly, so San Dimas replacement scopes run larger than most.
Roof Repair
Wind off the San Gabriel foothills loosens shingle edges and shifts tile, and a spot repair can hold until winter if it is done before the first storm.
Gutters & Fascia
Long eaves and outbuildings on big lots need drainage that carries water away from corrals and foundations, and horse-property gutters take heavy leaf and dust loads.
Roof Inspection & Maintenance
A yearly check suits large lots with oaks and brush, where debris settles in valleys and flashing across several roof planes and outbuildings.
Class A Fire-Rated Roofing
Streets backing onto San Dimas Canyon and the foothill brush sit near Cal Fire's mapped zones, so a Class A assembly is worth pricing at replacement time.
Metal Building & Storage Facility Roofing
Barns, shelters and storage outbuildings on horse properties usually carry metal roofs, where exposed fasteners, seams and flashing leak long before the panels fail.
Shingle Roof Repair
Composition roofs on wide ranch houses lose shingles at the rakes and ridges in foothill wind, and replacing a few early protects the felt below.
Downspouts & Roof Drainage
On sloping, horse-property lots, downspouts need to discharge away from foundations, corrals and driveways, or runoff from big roofs will pool where animals and trucks pass.
Our base and how to reach us from San Dimas
Crown Trim Roofers, 2765 Pacific Coast Hwy, Torrance, CA 90505. Approximate drive: about 90 min (48 mi).
Roofing questions from San Dimas
Can you work on horse-property roofs in San Dimas, including barns?
We can look at the house and outbuildings together. Barns and shelters are usually metal or composition, and the practical questions are gates, animals and where a truck can park. Tell us when you call. San Dimas sits about 90 minutes from our Torrance base, so phone first and scheduling will be confirmed.
Is a San Dimas home near Bonelli Park or the foothills in a fire zone?
Some may be. Fire-rated roofing is generally required by building code in mapped high-hazard areas, and Cal Fire maps fire hazard severity zones. Whether an address falls in one is a map question, so check with the city or Cal Fire. The options are explained on our Class A fire-rated roofing page.
Can you look at a low-slope roof on a Bonita Avenue storefront?
Yes. Commercial buildings are part of what we take on, including older downtown storefronts with low-pitched roofs and wood-framed awnings. We check drains, scuppers, seams and flashing, and send photos to the owner or manager. San Dimas is about 90 minutes from our Torrance base, so call first. Our commercial roof repair page explains the visit.
Nearby areas we serve
More in Los Angeles County and across all service areas.
Horse property with a worn roof? Get a free inspection.
Crown Trim Roofers · 2765 Pacific Coast Hwy, Torrance, CA 90505 · (209) 563-1278