Metal roofing
Architectural shingles
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Owens CorningFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Roofing Specials in San Diego, CA
If you’re pricing out roof work in San Diego, call (619) 810-5520 before you sign anything. Mercer Roofing Co runs a small set of standing offers for homeowners in neighborhoods from Point Loma to Rancho Bernardo, and every one of them comes with the same foundation: a written price before any work starts and a written guarantee on every repair. No gimmicks, no bait pricing. Just honest numbers on paper so you know exactly what you’re paying and exactly what you’re covered for.
Current Offers
Free Written Estimate on Any Repair or Installation
Every project starts with a written price, at no cost to you. Whether it’s a loose flashing detail in Kensington or a full tear-off in Chula Vista, we walk the roof, we look at the decking, and we put the number on paper before you commit to anything. No pressure, no conditional pricing. The estimate is free and it’s yours to keep.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
Free Second Visit If Your Repair Fails
Every repair comes with a written guarantee, and that guarantee includes a free second visit if the repair fails. If water is still getting in around that skylight or the section we patched in Mission Hills starts lifting, call us. We come back at no charge, period. This is not a verbal promise. It’s written on every repair job we do.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
365-Day Done Right Promise on All Work
If our work isn’t right within a year, we make it right. That covers everything we install and repair. It’s a full year of coverage, not the 30 or 90 days you’ll see from some crews. If something we touched fails in those 365 days, call (619) 810-5520 and we’ll come back and fix it. That’s the promise, and it’s been our standard since the company was founded in 2000.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
Written Guarantee on Every Repair, Included With Every Job
You don’t pay extra for coverage. Every repair we complete includes a written guarantee as part of the job. You get a document that says exactly what’s covered and for how long, before you pay a dime. It’s not an upsell. It’s standard. Same goes for the 365-Day Done Right Promise.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
Senior & Military Courtesy
We offer a courtesy discount for seniors and active or retired military personnel across San Diego County. If that’s you, tell us when you call. It’s our way of saying thanks. The discount applies to repair work and full roof installations, and it stacks with our free written estimate.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
Post-Storm Roof Inspection for Homeowners Near the Coast
After a heavy winter storm, we’ll come out and assess wind and water damage in neighborhoods like Ocean Beach, Pacific Beach, and La Jolla. San Diego roofs take a beating from salt air and sudden squalls, and small lifting at the eaves only gets worse. If you’re not sure whether the last storm left damage, call us and we’ll walk you through what we look for and what it costs to fix.
Valid through March 31, 2027. Mention this offer when you call (619) 810-5520.
Styles & brands we work with
How to Redeem
Redeeming any of these offers takes about a minute. First, call (619) 810-5520 and mention the offer by name. You’ll speak to a live person, not a voicemail, any hour of the day. Second, we’ll schedule the visit and send you the name and photo of the technician who’ll be at your door before they arrive. Third, present the offer when the technician is there. Done. The written estimate and written guarantee are included on every job, no matter which offer you use.
Why San Diego Homeowners Call Mercer Roofing Co
Our founder, Grant Whitlock, started this company with a simple rule: every person who answers the door for a roof repair should know exactly who’s standing on the other side. That’s the Threshold Standard. Every Mercer technician is background-checked, identity-verified, and dispatched under the Threshold Group quality framework. They arrive in a clean, marked uniform and present a photo ID badge at the door. In San Diego, where homeowners get cold-knockers selling everything from seal coating to solar in the same week, that badge matters.
We work with manufacturer-recognized shingle brands, including GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. So whether you’re repairing a section in North Park or reshingling a Mission Bay bungalow, the materials are brands your roofer won’t have to explain. And because Mercer Roofing Co is part of the Threshold Group family of home-service companies, every location is independently owned and operated and held to the same Threshold Verified standards. That’s not a franchise pitch. It’s a contract.
See the difference
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AfterWhat to Know Before You Call About a Roof Special
A few things worth knowing if you’re comparing offers from other San Diego roofing companies. First, many of the “coupon” prices you see online are not real numbers. They’re bait, and the real quote comes later, after someone has been on your roof for an hour. Mercer doesn’t do that. You get a written price before any work starts, and that number does not change when the invoice shows up. If a roofer won’t put the price on paper first, that’s your sign.
Second, check what the guarantee covers and for how long. A one-year guarantee is stronger than a handshake. Ours is 365 days, covers all work, and includes a free second visit if a repair fails. That’s the kind of language that should be in writing, not just in a phone call.
Third, ask who’s actually coming to your door. In San Diego, there are plenty of crews that subcontract labor. At Mercer, the technician’s name and photo are sent to you before they arrive. They show a photo ID badge at the door. If a roofing company can’t tell you who’s showing up, keep looking.
Frequently Asked Questions
Most San Diego roof repairs fall between $350 and $1,500 depending on the scope. Small jobs like replacing a section of flashing or patching a few shingles run on the lower end. Larger repairs, like replacing decking or rebuilding a valley, run higher. For a full roof installation, San Diego homeowners typically see a range of $12,000 to $28,000 depending on roof size, pitch, and shingle choice. Call (619) 810-5520 for a free written estimate, and you’ll have an exact number before any work starts.
No. At Mercer Roofing Co San Diego, the written price is the price. That’s not conditional and it’s not a “good-faith estimate.” If we find something unexpected during the work, we stop and show you before anything changes. No surprises on the invoice. That’s been the rule since the company was founded in 2000, and it’s one of the reasons Grant Whitlock started Mercer in the first place.
Yes, where the city or county requires them. For full roof installations in San Diego, a permit is typically required, and we handle that process as part of the job. Repairs often don’t require one, but if they do, we’ll let you know before we start and include it in the written price. The point of a written price is that you’re not surprised by a permit fee halfway through the job.
Most repairs are done in a day or less. A full roof installation on a typical San Diego home takes 2 to 5 days depending on the size of the roof, the number of layers we’re removing, and the weather. In coastal neighborhoods like Ocean Beach or La Jolla, morning marine layer can slow down the work slightly. We’ll give you a clear timeline when we provide the written estimate, and that timeline is part of the scope, not a guess.
The offers on this page are valid through March 31, 2027. After that, we’ll update the page. In the meantime, call (619) 810-5520 and mention the offer when you call, and a live person will take it from there.
Call Mercer Roofing Co San Diego for a Free Written Estimate
If you’re in San Diego and you’re thinking about roof repair or replacement, start with a number on paper. Call (619) 810-5520 or contact us through the form on this site. You’ll speak to a real person, get a free written estimate, and know before the technician arrives exactly who’s coming to your door. That’s the Mercer Roofing Co way, and it’s been that way since 2000.
Written by Grant Whitlock, Owner at Mercer Roofing Co San Diego, serving San Diego since 2000.