Metal roofing
Architectural shingles
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 Installation Across Los Angeles
Roof installation in Los Angeles requires more than just shingles and nails. Coastal salt air, Santa Ana winds, and seismic movement all shape what should go on your roof and how it should be fastened. A typical full Roof Installation in Los Angeles runs $9,500 to $22,000 for a standard single-family home, with material and labor accounting for most of that range. If you’re searching for a Los Angeles roofing crew that specifies marine-grade hardware where it matters and writes every price before work starts, call Mercer Roofing Co Los Angeles at (213) 521-8272.
Why Mercer Roofing Co Los Angeles Is Los Angeles’s Preferred Roof Installation Company
We founded Mercer Roofing in 2000 as part of the Threshold Group family, and our Los Angeles office dispatches background-checked, uniformed technicians to every job. Before any crew member arrives, we send their name and photo. They badge in with a photo ID at your door. That matters to homeowners in neighborhoods like Silver Lake, Westchester, and Granada Hills who want certainty about who’s on their property, and it’s the Threshold Standard every Mercer location is held to.
Our Roof Installation in Los Angeles crews know this city block by block. We know which ZIP codes catch marine fog and which bake under Valley heat. We know where streets narrow enough to require crane delivery. And we put every price in writing before a single nail is driven, backed by our 365-Day Done Right Promise: if the work isn’t right within a year, we make it right.
Styles & brands we work with
TPO Roofing Installation in Los Angeles
TPO Roofing Installation is common on Los Angeles apartment buildings, additions, and low-slope residential roofs, especially in the San Fernando Valley where flat and near-flat roof sections bake under intense UV for months at a time. TPO is a single-ply thermoplastic membrane that reflects heat, which matters when July temperatures in Van Nuys or Northridge sit above 95 degrees for weeks. A TPO roof installation in Los Angeles typically runs $7 to $10 per square foot installed, so a 1,500-square-foot roof lands between $10,500 and $15,000.
Heat-Welded Seams for Los Angeles Sun
TPO seams are heat-welded, not glued. That makes them more resistant to the thermal expansion and contraction Los Angeles roofs experience when nights drop into the 50s after days in the 90s. We inspect every seam with a probe after welding, because a missed seam in September becomes a leak by the first heavy winter rain.
When TPO Makes Sense Over Shingles
If your roof slope is under 2:12, shingles won’t shed water reliably. Many Los Angeles homes built between 1920 and 1960 have porch sections, additions, or entire roof planes at low slope. TPO handles that geometry without the constant patching those sections otherwise need.
Shingle Roof in Los Angeles
A Shingle Roof in Los Angeles is still the most common residential roof type for steep-slope homes across the city. Architectural asphalt shingles from GAF, CertainTeed, and Owens Corning are the workhorses in neighborhoods like Eagle Rock, Mid-City, and West Adams. A complete shingle roof installation in Los Angeles for a typical 1,800-square-foot home runs $11,000 to $18,000, depending on tear-off, decking repairs, and the shingle line chosen.
Nailing Patterns That Survive Santa Ana Winds
Santa Ana winds regularly gust past 50 mph in the foothills and passes. Shingles fail at the eaves and rakes first, almost always because the installer skipped nails or missed the nail line. We follow the full manufacturer nailing pattern for the wind rating on every Los Angeles shingle roof, no shortcuts for speed.
Decking and Underlayment Before Shingles Go Down
What’s under the shingles decides how long the roof lasts. On older Los Angeles homes, we often find decking that’s delaminated from decades of heat cycling. We replace bad sheets before laying synthetic underlayment, which holds up better than felt against Los Angeles’s UV exposure and Santa Ana-driven debris.
Trusted Brands We Service in Los Angeles
Mercer Roofing Co Los Angeles installs and repairs roofs using manufacturer-recognized shingle brands including GAF, CertainTeed, and Owens Corning. We stock common flashing profiles, underlayment, and sealants for Los Angeles homes so a repair or install doesn’t stall waiting on freight. If your Building and Safety inspector or HOA requires a specific material spec, we’ll pull the data sheets and match the system to the manufacturer’s installation requirements.
Common Roof Installation Problems We See in Los Angeles Homes
- Salt air corrosion on coastal installs. Standard galvanized fasteners on drip edge and flashing can corrode within a decade within a mile of the Pacific, while the same spec inland lasts 20 years. We specify 316 stainless in those zones.
- Santa Ana wind failures at the eaves. Poorly fastened starter strips and architectural shingles near the eaves rip off during high wind events. The fix is a full nailing pattern, every time.
- UV-degraded underlayment on low-slope Valley roofs. Flat and low-slope roofs in the San Fernando Valley crack and tear during the first heavy winter rain after years of sun damage. Replacing underlayment before it fails is cheaper than interior water damage.
- Earthquake-related cracks on clay tile roofs. Spanish Colonial and Mediterranean homes in Los Feliz and the Hollywood Hills often develop cracked tiles after seismic events, even when the tiles don’t fall. Water finds those cracks and rots the battens underneath.
See the difference
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AfterPricing for Roof Installation in Los Angeles, CA
A full tear-off and shingle roof installation in Los Angeles typically runs $11,000 to $18,000 for a 1,800-square-foot home. TPO installation runs $7 to $10 per square foot installed. Coastal-spec work with stainless fasteners and marine-grade flashing adds roughly 8 to 12 percent to the total, because the hardware costs more and the labor for sealed joints takes longer. That premium is cheaper than replacing corroded flashing and rotting decking within a decade. We give a written, line-item price before any work starts, so you know the real number before you commit. Call (213) 521-8272 to schedule a free estimate.
We Also Serve Cities Near Los Angeles
Beyond Los Angeles proper, our crews cover South Gate, Bell, Lynwood, and Bell Gardens. If you’re on the edge of the city or just outside it, call (213) 521-8272 and we’ll confirm coverage for your street.
Serving Los Angeles, CA - Our Local Coverage Area
We’re based in the Los Angeles 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 Installation in Los Angeles
If you’re within a mile or two of the coast, yes. Salt-laden marine air corrodes standard galvanized fasteners on drip edge and flashing within 5 to 10 years, and we see the failures as leaks at seams and penetrations. Five miles inland, standard galvanized hardware may last 20 years. The cost difference for stainless is a few hundred dollars on a full roof, and it prevents a much bigger bill later. Call (213) 521-8272 for an exact quote, estimates are free.
Santa Ana winds create sustained uplift at the eaves and rakes, and shingles tear off when the nailing pattern is short. We install starter strips and architectural shingles with the full nailing pattern required for the wind rating, and we inspect every course as it goes down. In Porter Ranch and the surrounding hills, wind exposure is a real factor in how long a roof lasts. Call (213) 521-8272 to schedule your free estimate.
In Westchester, the concern is salt air, so we specify corrosion-resistant fasteners and flashing details at every penetration. In the San Fernando Valley, the concern is prolonged UV and heat, so we pay extra attention to seam welding and heat-reflective membrane selection. The material is the same TPO, but the installation details change. Call (213) 521-8272 for a written quote, with no surprises.
Earthquakes shift the roof framing slightly, which breaks the bond between tiles and the underlayment beneath them. The tiles can look intact while water runs underneath them into the decking. In Los Feliz, where many homes are Spanish Colonial with original clay tile, this is one of the most common hidden leaks we find. A professional inspection catches it before the decking rots. Call (213) 521-8272 for a free estimate.
Yes, often. Original 1920s clay tiles from Hollywood Hills homes are irreplaceable, so color-matching a modern tile to the old glaze and dimensions can cost more per tile than replacing a larger section with a consistent new tile. We’ll give you both options with written pricing before any work starts. Call (213) 521-8272 to schedule a free estimate.
Call Mercer Roofing Co Los Angeles for Your Roof Installation Estimate
When you’re ready to price a new roof in Los Angeles, call (213) 521-8272. You’ll speak to a live person, not a voicemail. We’ll send you a technician’s name and photo before the visit, badge at your door, and put every price in writing. Grant Whitlock leads our Los Angeles team, and our 365-Day Done Right Promise means if it’s not right within a year, we make it right. Call today for a free estimate.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving Los Angeles since 2000.