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Glendale Roofing for Hillside, Canyon, and Historic Homes
Roofing in Glendale, CA, has to account for wildfire: CAL FIRE’s 2025 map puts 13,326 acres of the city, roughly two-thirds of its land, in the Very High fire hazard severity zone. As a roofing contractor in Glendale, Overhead Roofing plans canyon and hillside reroofs around that map, and around the city’s historic preservation rules where they apply.
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Where Glendale's 13,326 Very High acres are
CAL FIRE’s March 24, 2025 fire hazard table lists 13,326 acres of Glendale as Very High, up from 12,289 acres on the 2011 map, along with 853 acres High and 787 acres Moderate. Glendale covers 30.61 square miles, about 19,600 acres, so the Very High zone takes in roughly two-thirds of the city.
The zone follows the hills. On LA County’s 2025 fire hazard layer, points on the south slope of the Verdugo Mountains and in the San Rafael Hills east of downtown are both mapped Very High, and so are the canyon neighborhoods that run up into those ranges. Because the zone grew between the two maps, a home that sat outside it in 2011 may be inside it now.
The map is drawn by CAL FIRE and applies parcel by parcel. Before we quote a hillside reroof, we look up the address on the current map, because the zone shapes the roof assembly we recommend.
Canyon roofs after La Tuna: embers, wind, and heat
The La Tuna Fire started in La Tuna Canyon on September 1, 2017, and burned 7,194 acres in the Verdugo Mountains over nine days. It destroyed five homes and five outbuildings near Tujunga, and on September 2 it forced the mandatory evacuation of about 250 Glendale homes.
On a canyon home, the roof collects wind-blown embers and leaf litter. When we reroof in the Very High zone, we recommend:
- A Class A-rated roof assembly, such as concrete or clay tile or Class A asphalt shingles.
- Closed openings at the eaves and ridge, including bird stops at the open ends of tile, so embers and debris can’t lodge underneath.
- Metal flashing and clear valleys, since valleys are where dry leaves pile up during fire season.
State code (the California Wildland-Urban Interface Code, Title 24, Part 7) requires a Class A roof covering when a roof in a Very High zone is replaced, and we confirm the requirement for each address with Glendale’s Building & Safety Division before ordering material.
Wind and heat add their own wear. Santa Ana winds reach Glendale once or twice a year, usually between October and December, at up to 70 mph, with gusts up to 100 mph in mountain passes and canyons. That is when ridge cap lifts, shingles crease, and loose tile slides. Glendale also set a record high of 115°F on September 6, 2020, and long stretches of heat age asphalt shingles faster, especially on slopes that face south and west.
Roof guidelines for Glendale's historic districts
Glendale has a large stock of older houses: 16,213 of its 78,451 homes (20.7%) were built in 1939 or earlier, and another 7,527 in the 1940s, per the 2019-2023 American Community Survey. Its historic districts are an overlay zone. As the city’s code is published, exterior work on any building in a designated or pending historic district, contributing or not, needs design review approval before building permits are issued. The Director decides many cases, and the Historic Preservation Commission decides major changes.
The city’s Design Guidelines for Residential Buildings in Adopted Historic Districts, prepared for the Historic Preservation Commission, treat the roof as a character-defining feature where it’s visible from a public street. The original materials they list are red clay half-barrel tile, wood shingles, composition shingles, slate, composition roll roofing, and tar and gravel, with shingles and clay tile the most common. For reroofs, the guidelines say:
- Mediterranean Revival: the clay tiles should be removed, cleaned, and reinstalled during roof work.
- Mission Revival: replacement tile should match the existing tile.
- Wood shingle roofs: composition shingle is an appropriate substitute in a complete replacement.
- Simulated materials: plastic or concrete imitations are not appropriate.
- Solar panels, skylights, and vents: these should be placed to keep them out of view from the street, and generally not on the primary facade.
The guidelines also prefer repair over replacement, which suits the way a clay tile roof is usually fixed. The tile comes off, new underlayment and flashing go down, and the cleaned tile goes back on, the same kind of tile reset we completed in San Marino.
Glendale Register homes and the 100-square-foot repair limit
Properties listed individually on the Glendale Register have their own thresholds. As the city’s historic preservation code is published:
- Replacing up to 100 square feet of roof cladding is routine maintenance, but only if the new material matches the existing in material, dimension, color, texture, and reflectivity.
- Larger roof work, or work that doesn’t match, needs Director review.
- Changes to the roof form, or cladding changes that need design review, are major alterations that go to a Historic Preservation Commission hearing.
The same code counts failing to keep water or wind from entering through the roof as part of demolition by neglect, and register owners must maintain their properties. A slow leak on a register home is worth fixing early, while the repair still fits inside the 100-square-foot limit. Register properties can also qualify for Mills Act tax contracts.
Glendale roofing contractor work, from canyon reroofs to condo repairs
Glendale is mostly a city of renters: 47,379 of its 73,179 occupied homes are rented, and 35.3% are owner-occupied. Many single-family homes in south Glendale were replaced by apartments and condominiums in the 1980s, which fits the 11,602 housing units the Census counts from that decade. So the roofs here run from canyon houses and pre-1940 homes to 1980s multifamily buildings managed by owners and HOA boards. The work we do here:
- Roof repair in Glendale for leaks at flashing, valleys, chimneys, and skylights, and for Santa Ana wind damage, with 24/7 emergency service.
- Hillside and canyon reroofs built around a Class A-rated assembly.
- Tile resets on Mediterranean Revival and Spanish homes, reusing the original clay tile.
- Matching repairs on Glendale Register homes, sized and documented with the 100-square-foot limit in mind.
- Roof inspections for apartment and condominium owners, HOA boards, and buyers.
Glendale runs its own Building & Safety Division, separate from the City of Los Angeles, with its Permit Services Center at 633 E. Broadway, Room 101. We confirm permit and fire-rating requirements there for each address.
Hiring a roofer in Glendale should start with a license lookup. Ours is CSLB #1119699 in the C-39 Roofing class, and Overhead Roofing is bonded and insured. We are a BBB Accredited business rated A, and our team brings 25+ years of roofing experience. Glendale estimates are free, with a workmanship warranty on completed work.
Glendale roof questions from canyon and historic homeowners
How much did the 2025 map add to Glendale's Very High zone?
The new map added 1,037 acres. CAL FIRE’s 2025 table lists 13,326 Very High acres in Glendale, up from 12,289 on the 2011 map, centered on the Verdugo Mountains, the San Rafael Hills, and the canyon neighborhoods that reach into them. A home that sat outside the old zone may be inside the new one, so we look up every hillside address on the current map before we quote.
What roof do you recommend for a canyon home in Glendale?
A Class A-rated assembly, such as concrete or clay tile or Class A asphalt shingles, with the eave and ridge openings closed so embers and leaves can’t collect underneath, and metal flashing in the valleys, where dry leaves pile up. The fire rating your permit requires depends on the address, and we confirm it with Glendale Building & Safety before ordering material.
Can I replace the clay tile on a Mediterranean Revival house in a Glendale historic district?
The city’s historic district guidelines point the other way: remove the clay tiles, clean them, and reinstall them during roof work, which lets the underlayment and flashing be replaced underneath. On Mission Revival homes, tile that has to be replaced should be matched. Plastic or concrete imitations are considered inappropriate, and as the code is published, exterior work in a district goes through design review before a building permit is issued.
What can replace a wood shingle roof on a historic Glendale home?
Composition shingle. Glendale’s historic district guidelines name it as an appropriate substitute for wood shingles when the whole roof is being replaced. Because the guidelines treat the roof as a character-defining feature wherever it’s visible from a public street, we choose a shingle color and profile that suit the house. Simulated plastic or concrete materials are on the guidelines’ list of inappropriate choices.
How much roof repair can I do on a Glendale Register property without review?
Up to 100 square feet of roof cladding, as the city’s historic preservation code is published, and only if the new material matches the existing in material, dimension, color, texture, and reflectivity. That counts as routine maintenance. Anything larger, or anything that doesn’t match, goes to the Director for review, and changes to the roof’s form go to a Historic Preservation Commission hearing.
Do Santa Ana winds hit Glendale's canyon homes harder?
They can. Santa Ana winds reach Glendale once or twice a year, usually between October and December, at up to 70 mph, and gusts can reach 100 mph in mountain passes and canyons. That makes a fall roof check worth doing on a canyon home: it catches loose ridge cap, cracked or slipped tile, and lifted shingles while repairs are small. Emergency roof repair is available 24/7.
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