Metal roofing
Architectural shingles
Tile roofing
Owens CorningFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across Coronado
Roof installation in Coronado runs $14,000 to $38,000 for a standard single-family home, with standing seam metal at the higher end and architectural shingles in the middle. Most full replacements here take 5 to 10 working days once materials arrive. If you’re planning a roof this year on the island, call (619) 810-5520 and we’ll give you a written line-item price before any work starts.
We know Coronado’s quirks: the salt air off the Pacific, the Santa Ana gusts that hit west-facing slopes, the 1920s cottages with clay tile the Board wants preserved, and the Historic Preservation Commission looking over your shoulder on every street-facing slope. Our Roof Installation crews live with these constraints daily, and we schedule for them, not around them. Because on Coronado, a roof is never just a roof. It’s part of the island’s architectural record.
Why Mercer Roofing Co San Diego Is Coronado’s Preferred Roof Installation Company
Founded in 2000, Mercer Roofing is part of the Threshold Group family of home-service companies. Every technician who steps onto a Coronado property is background-checked, identity-verified, and dispatched under the Threshold Verified standard. Before your appointment, you’ll receive the technician’s name and photo. When they arrive, they’ll badged in with photo ID at the door. You’ll know exactly who is on your property, which matters when you’re home alone, when the kids are napping, or when the person at the door could be anyone.
Coronado homeowners choose us for the 365-Day Done Right Promise: if the work is not right within a year, we make it right, in writing. That guarantee is included with every install, not added as a premium. We also answer our phone with a live person, 24/7. Not a voicemail, not a call-back form. A real human being. When a storm tears a ridge vent loose at 11 p.m. on a Saturday, you get a person.
Grant Whitlock leads our roofing operations, and he holds our crews to a plain standard: show up when promised, write down the price before the first nail goes in, and leave the job site clean. Our Coronado customers regularly tell us that’s exactly what happened. Which is why they call us back when the next roof needs doing.
Styles & brands we work with
Shingle Roof in Coronado
A shingle roof in Coronado is the most common choice for homeowners who want a strong, clean look without fighting the Historic Preservation Commission. Architectural asphalt shingles from Owens Corning or Atlas install fast, perform well in coastal wind, and let you choose a color that sits quietly on the street. Expect a full shingle roof installation on a 1,800 to 2,400 square foot Coronado home to run roughly $14,000 to $22,000, including tear-off, new underlayment, flashing, and cleanup.
Historic District Shingle Replacement
On a Spanish Colonial Revival home in the 700 block of A Avenue, we removed failed composition shingles down to the original wood decking, sistered new plywood where needed, and coordinated with the homeowner’s architect to salvage enough original clay tiles from a matching 1925 cottage to re-roof the street-facing slope, with new high-temp underlayment and custom copper flashings around the chimney and valleys. That kind of coordination is normal here. We know the Board’s expectations and we bring the documentation they want to see.
For most historic homes, we recommend an architectural shingle in a muted tone that reads as aged composition from the street. The Board cares about visual character, not the material itself, but we’ll help you prepare the submittal so it passes first review.
Coastal-Grade Underlayment Choices
Salt air means your underlayment is the real waterproofing layer, not a backup. We spec high-temp, self-adhered synthetic underlayment on Coronado installs, because it seals around fasteners and holds up to the marine layer’s constant damp. It costs more than felt, but it’s the difference between a roof that leaks at year seven and one that stays dry through the shingle warranty.
Standing Seam Metal Roof in Coronado
A standing seam metal roof in Coronado is the premium choice for homeowners who want a 50-year lifespan and the best wind performance available on the island. Prices typically run $26,000 to $38,000 for a standard single-story home, and the job takes longer because panels are made to order, not pulled from a yard. If you’re weighing metal, plan the lead time: four to eight weeks for panel fabrication is common from IKO and Tamko’s architectural metal lines, then 7 to 12 days on-site.
Wind Rating That Actually Holds
Santa Ana gusts routinely hit 60 to 70 mph on west-facing Coronado slopes. A properly installed standing seam panel, with concealed clips and full-length seams, is rated for 130 mph or more. But that rating only holds if the installer uses the right clip spacing and doesn’t shortcut the eave trim. We install to the manufacturer’s engineering table, not to habit, and we document it in writing.
Historic District Approval Path
Yes, standing seam is allowed on Coronado’s historic district homes, but only with commission approval and usually only on low-slope or hidden roof areas. The Board has approved metal on flat sections behind parapets and on rear additions where it isn’t visible from the street. We can help you understand what has a realistic chance of passing before you pay for drawings. Get our take first, not after you’ve designed something that won’t be approved.
Trusted Brands We Service in Coronado
We work with manufacturer-recognized shingle and metal systems from Owens Corning, IKO, Atlas, and Tamko, among others. That matters in Coronado because local supply houses stock these lines, and when a panel or bundle gets damaged mid-job, we can have replacement material on the island the same day, not three days later from a warehouse in Riverside. The brand matters less than the installation, but using brands your local roofer can actually get means the schedule holds. And on Coronado, where a roofer without a plan can leave a house open to salt air for a weekend, schedule integrity is everything.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Installation Problems We See in Coronado Homes
- Salt-driven flashing corrosion. The marine layer deposits salt on galvanized flashing and fasteners, and within five to seven years they corrode enough to leak, long before the shingle warranty ends. We use stainless or copper flashings and coated fasteners on Coronado installs, and we write that spec into your contract.
- Santa Ana lift on west-facing slopes. Wind gusts on Coronado’s western exposure can peel architectural shingles that were installed without a starter strip or with the wrong nailing pattern, which voids the manufacturer’s 130 mph wind rating. We nail to the pattern in the engineering data, and we photograph it before the ridge cap goes on.
- Ponding on original low-pitch roofs. Homes from the 1920s and 1930s were often framed with skip sheathing and very shallow slopes. When a previous contractor laid new decking over that without fixing the drainage, water ponds and underlayment fails early. We assess slope before we quote, not after we’re tearing off.
- Hand-formed clay tile that can’t be replaced. Original 1920s tent city cottage tiles were formed by hand, and no manufacturer makes them today. When we need to match, we source salvage from the same era, which requires lead time and patience. Plan for it, don’t discover it mid-tear-off.
Pricing for Roof Installation in Coronado, CA
A complete roof installation in Coronado generally lands between $14,000 and $38,000. A shingle roof on a 1,500 to 2,200 square foot home typically runs $14,000 to $22,000, while standing seam metal runs $26,000 to $38,000, mostly driven by material cost and the longer installation. What moves your number: the number of slopes, existing decking condition, whether the commission requires specific materials, and access for tear-off. We write itemized pricing before any work starts, and our contract price is the price. No change orders for things we could have seen from the ground. Call (619) 810-5520 for a free, line-item estimate, and we’ll walk the roof with you if you want to be there.
We Also Serve Cities Near Coronado
Our Roof Installation in Coronado crews also work in San Diego, National City, Imperial Beach, and Bonita. Scheduling and dispatch are coordinated from the brand’s San Diego office, but the technicians who serve Coronado work the island regularly and know the inspection office and the Board’s current preferences. If you’re in a neighboring city, the same Threshold Verified standard applies.
Serving Coronado, CA - Our Local Coverage Area
We’re based in the Coronado 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 Coronado
Yes, in most cases, but you need to choose a shingle profile and color that is compatible with the home’s historic character, and you must submit the proposed materials to the Coronado Historic Preservation Commission for approval before work begins. Most reviews take two to four weeks, so budget that into your schedule. Call (619) 810-5520 and we’ll tell you what has passed recently and what will likely get flagged.
We recommend a self-adhered, high-temperature synthetic underlayment on coastal Coronado homes, because it seals around fasteners and resists the persistent damp of the marine layer far better than traditional felt. The added cost is modest compared to the cost of replacing decking rotted by slow salt-driven leaks. This is standard on our Coronado installs, not an upgrade.
Santa Ana winds create uplift forces on west-facing slopes that require a full starter strip at the eaves, correct nail placement per the manufacturer’s wind rating, and often additional fasteners at the rake edges. A roof installed without these can fail at half its rated wind speed. We install to the engineering table and document the nailing pattern in photos before we close the ridge.
Yes, but it takes lead time. The original tent city cottage tiles were hand-formed and are no longer manufactured, so we source matching tiles from salvage of the same era, which can take several weeks. We recommend starting the salvage search at the same time as your permit application, not after tear-off begins. Grant Whitlock keeps a running list of local salvage sources for Coronado-era tile.
It’s allowed in some circumstances, typically on low-slope or street-hidden roof sections where the metal won’t change the visible architectural character of the home. Street-facing slopes on Spanish Colonial Revival homes will almost always need a historically compatible material. We can walk your roof and tell you honestly which sections have a realistic chance of commission approval before you spend money on drawings.
Written by Grant Whitlock, Owner at Mercer Roofing Co San Diego, serving Coronado since 2000.