Architectural shingles
Metal roofing
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Alhambra
Most roof replacement work in Alhambra homes begins with an older roof that still looks fine from the street but is failing underneath. Our Roof Replacement team works on Spanish Colonial, Craftsman, and mid-century stucco homes across Alhambra’s 91801 and 91803 ZIP codes, and we’ve learned exactly what those roofs hide once they’re opened up. If you’re seeing cracked tile, curled shingles, water stains on ceilings, or just have a roof past its sixtieth birthday, call us at (866) 850-2496 for a straight assessment. We’ll tell you what the roof actually needs, whether that’s a targeted repair or a full replacement, and we’ll put the numbers in writing before any work begins.

Why Windmill Roof Repair Is Alhambra’s Preferred Roof Replacement Company
Alhambra homeowners tend to ask the same question when we show up for an estimate: what would you do if this were your house? We answer it honestly, because we’re not tied to any single shingle manufacturer. That matters on Alhambra’s older housing stock, where the right answer is often a tile lift-and-relay rather than a full tear-off, or a specific asphalt shingle that matches the original mid-century look. We work with seven leading brands including GAF, CertainTeed, Owens Corning, and IKO, so the product recommendation comes from your roof’s condition and your budget, not from a vendor arrangement. Ruben Ochoa leads our crew, and he’s the one walking Alhambra roofs and writing the scopes himself.
We handle the full roof lifecycle under one roof: inspection, repair, and replacement. That means an Alhambra homeowner who calls us for a leak doesn’t get funneled into a replacement they don’t need. We offer standalone roof inspections as a no-commitment first step, so you can see the actual condition of your roof before agreeing to anything. Around Alhambra’s tight side yards and detached garages, that honest scoping is what keeps a project from turning into a runaway invoice.
Styles & brands we work with






Roof Installation in Alhambra
Roof installation in Alhambra typically means one of two scenarios: a complete replacement on an existing home, or new construction on a lot where a garage, ADU, or addition is going up. On existing homes, the job usually starts with tear-off of the old material down to decking, then a full inspection of the sheathing, battens, flashing, and underlayment before anything new goes on. For new construction, we install directly over fresh decking, which gives us a clean substrate and fewer unknowns. A full tear-off and re-roof on a typical Alhambra home with a new asphalt shingle system runs $9,000 to $18,000 depending on square footage, slope, and what we find underneath. A tile lift-and-relay with new underlayment on a Spanish Colonial runs $14,000 to $26,000 because the tile comes off, gets cleaned and palleted, and goes back on over new paper and battens.
New Construction Roofing
New construction in Alhambra is mostly ADUs, garage rebuilds, and the occasional spec home on an infill lot. We install over clean decking, which means fewer surprises than a re-roof, but we still verify the framing, sheathing, and flashing details before the first shingle or tile goes down. Our multi-brand lineup means the roof can match whatever the architect specified or what the homeowner wants aesthetically.
Asphalt and Architectural Shingle Systems
Most mid-century stucco tract homes in Alhambra that are getting a full replacement end up with architectural asphalt shingles. They hold up to San Gabriel Valley UV better than three-tab, and they give the roof a dimensional look that fits the neighborhood character. We carry GAF, CertainTeed, Owens Corning, and IKO lines, so you’re getting a genuine product choice rather than whatever the contractor happens to stock.
Roof Replacement Contractor in Alhambra
A roof replacement contractor in Alhambra has to understand what’s under the surface of these older roofs before quoting anything. The homes we replace roofs on here are frequently 60 to 90 years old, and the original clay tile, wood shake, or early asphalt has been baked by inland heat and flexed by Santa Ana wind events for decades. We approach every Alhambra replacement as a job with unknowns: we inspect first, write allowances into the contract for the things we can’t see until tear-off, and get written approval before any surprise line item moves forward. On a typical Alhambra tear-off re-roof, you’re looking at $12,000 to $22,000 when fascia, flashing, and decking repairs are factored in. That range is honest; anyone quoting a firm number on a 70-year-old roof without mentioning contingencies is guessing.
Tile Lift-and-Relay Work
On Alhambra’s Spanish Colonial blocks, the original clay barrel tile is frequently still sound while the underlayment and battens beneath it have failed after 60-plus years. The correct replacement is a tile lift-and-relay over new underlayment, not a full tear-off. We open the job as a lift-and-relay, pallet the tile on-site, replace the paper, battens, and any bad decking, and then relay the original tile.
Flat and Low-Slope Roofing
Many mid-century stucco homes and detached garages in Alhambra have low-slope or nearly flat roof sections. These fail at flashings and penetrations first, and the damage often isn’t visible until the old roofing is pulled. We quote flat roof replacement with a written allowance for rotted decking and failed flashing, so the final number matches reality instead of a rosy guess.

Trusted Brands We Service in Alhambra
We stock and install GAF, CertainTeed, Owens Corning, and IKO roofing systems for Alhambra replacements, plus Atlas, Tamko, and Boral when a project calls for them. Seven brands, one crew. For Alhambra homeowners, that means we can match an existing roof profile, hit a specific budget, or upgrade to a higher-performance shingle without switching contractors. Parts and materials for these systems are readily available through our local supply chain, so an Alhambra job doesn’t stall waiting on a specialty order. The right material for your roof, not ours.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Alhambra Homes
- Failed underlayment beneath good clay tile. We see this constantly on Alhambra’s 1920s and 1930s Spanish Colonials: the barrel tile looks fine from the curb, but the paper and battens underneath are chalky, split, or gone. The fix is a lift-and-relay, not a tear-off, and the tile goes right back on.
- Cracked clay tile from UV and Santa Ana wind. Decades of San Gabriel Valley sun and the occasional strong Santa Ana event leave tile brittle and curled. Once one or two tiles crack, water gets to the underlayment and the clock starts on the real damage underneath.
- Failed flashing at low-slope penetrations. Mid-century stucco homes and detached garages in Alhambra often have low-slope sections where the flashing at pipes, walls, and drains fails before the roof covering itself. By the time a leak shows inside, the decking underneath is often soft.
- Tight staging and access on narrow side yards. Alhambra lots were platted close together, and many homes have detached garages with only a narrow side yard for access. Tear-off debris, tile pallets, and material delivery all have to be sequenced carefully so we don’t block a neighbor’s driveway or damage landscaping.
Pricing for Roof Replacement in Alhambra, CA
A full asphalt shingle replacement on a typical Alhambra home runs $9,000 to $18,000. A tile lift-and-relay with new underlayment on a Spanish Colonial runs $14,000 to $26,000. Flat or low-slope replacement sections typically run $8 to $14 per square foot. What moves the number most is what we find once the old roof is off: rotted decking, failed battens, fascia that needs replacing, and code-required upgrades at the sheathing or ventilation level. That’s why we write allowances into every Alhambra contract for the things we can’t see until tear-off begins. Any allowance spend gets priced and approved in writing before we touch it. Call (866) 850-2496 for a free roof estimate on your Alhambra home.
We Also Serve Cities Near Alhambra
Our Roof Replacement in Alhambra crew regularly works in East San Gabriel, San Gabriel, Monterey Park, and South San Gabriel. The housing stock across these neighboring cities mirrors Alhambra’s: older Spanish Colonials, mid-century stucco tract homes, and the same tight side yards and detached garages. If you’re a few blocks outside the city line, you’ll get the same inspection-first approach and written allowances.
Serving Alhambra, CA — Our Local Coverage Area
We’re based in the Alhambra area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About Roof Replacement in Alhambra
The big drivers are rotted decking, failed battens, and flashing that has to be replaced once the old roof is off. On Alhambra homes built in the 1920s through 1960s, these conditions are common and frequently unpriced in lowball bids. We handle it by writing allowances into the contract before tear-off begins, so any additional work is priced and approved in writing before we spend a dollar. Call (866) 850-2496 for an estimate that accounts for what’s actually under your roof.
Because on many Alhambra Spanish Colonials the tile itself is still good while the underlayment beneath it has failed. The barrel tile comes off, gets palleted on-site, and goes back on over new underlayment, battens, and decking. It’s cheaper than sourcing new tile, preserves the original look, and keeps perfectly good material out of a landfill.
They limit where we can stage tile pallets, dump trailers, and material deliveries. On Alhambra’s tighter lots, we sequence tear-off and material drops so we’re not blocking your driveway or a neighbor’s. Detached garages also mean separate roof sections with their own flashing and decking issues, which we scope independently in the estimate.
Look for what’s included in the base price and what’s held back as an allowance for hidden damage. Two bids can look similar until one has rotted decking, fascia repair, and code upgrades priced as allowances and the other leaves them as unpriced surprises. Ask each contractor what happens when they open the roof and find soft decking. If they can’t answer that question with a written process, keep looking. Call (866) 850-2496 and we’ll walk you through how our estimates work.
It shouldn’t, if the estimate was written correctly. When you open a roof in Alhambra, the inspector is looking at current code: sheathing thickness, ventilation, and underlayment requirements. We know what current code requires on these older Alhambra homes and we factor it into the estimate before work starts. If an inspector flags something we couldn’t have seen before tear-off, it’s handled through the written allowance process with your approval first.
Written by Ruben Ochoa, Owner at Windmill Roof Repair, serving Alhambra and the San Gabriel Valley.