Roofing Service in Altadena
Alpha & Omega Roofing has been putting roofs on foothill houses since 1960, and Altadena has been part of that work for most of it. We are locally owned and locally operated, licensed, bonded, and insured, and the same people who quote your job are the people who stand behind it. Altadena property sits under old trees on steep lots with long roof runs, and those conditions shape how a crew stages the work and where the debris goes. We also serve nearby Pasadena and Sierra Madre.
Residential Roofing Services
Trusted Across Southern California Since 1960
Alpha & Omega has roofed houses across Altadena, and separately we have taken on work for large organizations elsewhere in Southern California. Those contracts run through the same crews and the same certified materials your house would get. The size of a job changes the scheduling. Serving households and local businesses in the same week is the work the company was built around, and it has stayed that way since 1960.
We’ve earned the business of:
Jet Propulsion Laboratory
Azusa Pacific University
Property Management Services
Mt. San Antonio College
And More!
Professional Roofing Solutions
Roof Maintenance in Altadena, CA
Debris is the main maintenance problem on an Altadena roof. Leaf litter fills the valleys, needles pack the gutters, and a roof that drains badly in October leaks in February. Our maintenance agreements in Altadena schedule the visits that clear those paths, reseat loose tiles, renew the sealant at the penetrations, and check the flashing where a roof meets a wall or a chimney. You get a written note after each visit listing what was cleared and what was replaced.
Roof Inspections in Altadena, CA
A roof inspection tells you the age and condition of what is over your head, which is different from knowing the year the house was built. Our roofers walk the surface where it is safe, look at the underside of the deck from the attic where they can, and document the flashing, the fasteners, and the condition of the covering. You end up with photographs and a written summary, which is what an insurer or a lender asks for. Homeowners here order inspections before renewing a policy, before listing, and after a windstorm.
Re-Roofing in Altadena, CA
A tear-off is the point where an Altadena roof stops being a series of repairs. We take a full roof replacement down to the decking, replace boards that have gone soft, and rebuild the underlayment, the flashing, and the edge metal before any covering goes back on. On a house of this vintage the sheathing is often skip-sheathed for wood shake, so switching to tile or composition means adding a solid deck, and we price that where it applies rather than finding it halfway through.
Roof Repairs in Altadena, CA
Most Altadena leaks come from a detail rather than the open field of the roof. The usual suspects are flashing that was never lapped correctly where a roof meets a wall, a cracked boot on a plumbing vent, a chimney counterflashing that has pulled away, or mortar that has failed at a tile ridge. Our roofers find the entry point rather than sealing the wet spot on the ceiling below it, because water travels along rafters before it shows. Repairs are made with material matched to the existing roof, and on a tile roof individual pieces are lifted and replaced instead of the slope being resurfaced.
License and Manufacturer Certifications
Alpha & Omega Roofing, Inc. holds California contractor license #C39-857106. We hold current manufacturer certifications with GAF, Malarkey, Owens Corning, CertainTeed, Versico, FiberTite, and DOW, covering steep-slope shingle and tile work as well as single-ply commercial systems. Those certifications let us register manufacturer-backed warranties of up to 20 years on material and workmanship. We carry workers’ compensation and liability insurance, and our customer reviews are published on the site.
We specify cool-roof rated products that meet the Title 24 aged solar reflectance and thermal emittance values, from the manufacturer lines we are certified to install.
What Altadena Homeowners Should Know Before a Reroof
Altadena is unincorporated, so its building permits are county permits rather than city permits. Roofing work goes through Los Angeles County Public Works, and the counter that serves the community is the Altadena Building and Safety Office at 464 W. Woodbury Rd, Suite 210. Walk-in hours run Monday through Friday, 8:00 a.m. to 4:30 p.m., with the last call for permits at 3 p.m. The County also runs the Altadena One-Stop Permit Center at that address, where Regional Planning, Public Health, and the Fire Department sit alongside Public Works.
The County adds a cool-roof rule on top of the state energy code. Title 31 of the Los Angeles County Code, the County Green Building Standards Code, requires roofing material to meet solar reflectance and thermal emittance values at Section 4.106.6, and the exceptions are where the detail sits. A roof repair is exempt. So is a roof replacement where the area being replaced is 50 percent or less of the total roof area. A full tear-off is not exempt, and reflectance is a property of the product rather than something that can be added afterward, so it belongs in the conversation before you pick a color.
The Altadena housing stock is old. Census figures for 2020–2024 give a median year built of 1946, with 37.0 percent of units dating from 1939 or earlier, 60.5 percent built before 1950, and 87.7 percent standing before 1980. On houses that old the decking, the fascia, and the original vent detailing drive the scope of a reroof as often as the covering does.
Altadena falls in California Building Climate Zone 9 under Title 24, and so do Pasadena and Sierra Madre, so the cool-roof values carry across that stretch of the foothills. Further west the zone changes: the Sunland and Tujunga ZIP codes, 91040 and 91042, are Zone 16 and carry a different requirement.
Roofing Options for Every Style & Budget
Shingles
Fiberglass Shingles
Fiberglass shingles are built on a glass mat, which keeps the weight down and raises the fire rating compared with an organic felt base. That combination reads well on a foothill lot. They also hold their shape through a hot summer instead of curling at the edges, and they cost less to install than tile.
Asphalt Shingles
Asphalt shingles remain the most affordable way to put a warranted roof on a house. Installed to the manufacturer nailing schedule with the right starter and ridge, they carry decades of service and shed wind-driven rain without trouble. Color choice is wide enough that most Altadena homeowners find something that suits the house.
Dimensional Shingles
Dimensional shingles are laminated rather than flat, so the finished roof carries depth and shadow that a three-tab cannot produce. On the large visible roof planes common in Altadena that texture does a lot of work. They also weigh more and last longer than the flat product, and the manufacturer coverage reflects it.
Tile
Lightweight Tiles
Lightweight tile suits an older Altadena house whose framing was never designed for a clay or concrete load. You get the same profile from the street at a fraction of the weight, which often removes the need for structural upgrades on residential roofs. Handling is easier on a steep lot too, and that shows up in the labor line of the estimate.
Concrete Tiles
Concrete tile is dense, wind-resistant, and available in profiles from flat to high-barrel. It is one of the longest-serving coverings we install, and individual tiles are replaceable, so damage from a falling branch stays a repair. The framing has to carry the weight, which is the first thing we verify on a house built in the 1920s or 1930s.
Clay Tiles
Clay tile holds its color for the life of the roof because the color is fired through the body rather than coated on. It belongs on the Spanish and Mediterranean houses scattered through Altadena, and there is no substitute that ages the same way. Alpha & Omega Roofing installs it with the underlayment and battens the manufacturer calls for, which is what makes the lifespan real.
Reach out to Alpha & Omega Roofing at (562) 693-4532 or 1-888-847-ROOF today to schedule your roofing service or learn more about how we can protect your home or business.
