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
Roofers in San Pedro, CA
Roofers in San Pedro work on homes that face salt air, morning fog, and hillside wind almost every day of the year. The housing stock here spans Craftsman bungalows from the 1920s, Spanish Colonial Revival homes near the coast, and mid-century ranch houses up on the terraces above Western Avenue. That mix means one roof might be low-slope composition shingle and the next might be a steep pitch with tile. If you’re looking for a roofer who will send a technician’s name and photo before the visit and put every price in writing before work starts, call Mercer Roofing at (424) 435-5428.
Why San Pedro Homes Are Different
San Pedro sits on the open coast, and the marine layer does not just bring cool mornings. It brings humidity that settles on roof planes, and the salt-laden air off the Pacific accelerates corrosion in ways homeowners in Torrance or Carson rarely see. Metal flashing, fasteners, and gutters here rust faster. North-facing roof slopes grow moss and algae that hold moisture against shingles and shorten their life. The hillside homes above Western Avenue take the brunt of the ocean wind, and ridge caps there often need extra sealing because standard caulk breaks down under constant salt spray within a couple of years.
Older homes in the central and coastal neighborhoods present another layer of care. Many have low-slope roofs or original composition shingle that relies on flashing and underlayment that may be decades old. When we walk a San Pedro roof, we look at those transition points first: where the roof meets a chimney, a parapet wall, or a dormer. Those are where salt air and age do their worst damage. Our technicians arrive in a clean, marked uniform and present a photo ID badge at the door, so you know exactly who is climbing onto your roof.
Styles & brands we work with






Our Main San Pedro Services
Most San Pedro homeowners call us for two reasons: a leak that needs attention now, or a roof that has reached the end of its life and needs replacing. Each service has its own dedicated San Pedro page with full details and pricing.
Roof Repair in San Pedro
San Pedro roofs leak in predictable places: rusted flashing along chimneys, cracked pipe boots, and worn ridge caps on the windward side of hillside homes. Our repair work starts with a written price before any work begins, and every repair includes a written guarantee. If the repair fails within a year, we return and make it right at no charge. We also send you the technician’s name and photo before the visit, so the person at your door is the person you expected. Get the details on our Roof Repair in San Pedro page.

Roofing Company in San Pedro
Choosing a Roofing Company in San Pedro comes down to who you let onto your property. We’re part of the Threshold Group family, founded in 2000, and every technician who arrives at a San Pedro home is background-checked, identity-verified, and dispatched under the Threshold Verified standard. That means a photo ID badge at your door, a marked uniform, and a name you already know. Our team serves San Pedro locally, with dispatch coordinated from the brand’s Los Angeles office. See how we operate.

Roof Installation in San Pedro
A new roof in San Pedro has to hold up to salt spray, wind, and humidity. That affects material choices: flashing details matter more here than they do inland, and underlayment should be selected with coastal moisture in mind. We install shingle brands including GAF, CertainTeed, and Owens Corning, and every installation starts with a written line-item price before any nail is driven. You’ll also get the 365-Day Done Right Promise: if something isn’t right within a year, we make it right. Full details are on our Roof Installation in San Pedro page.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Pedro
We install and repair shingle roofs from GAF, Atlas, and Tamko, with materials ordered to match your San Pedro home’s existing roof where possible. Common parts like ridge caps, pipe boots, and flashing stock are kept ready for quicker repairs. For a deeper look at the shingle lines we work with, see our brands page.
See the difference
Before
After
Before
After
Before
AfterPricing for Roofers in San Pedro, CA
| Service | Typical range in San Pedro |
|---|---|
| Asphalt shingle roof installation | $400 – $700 per square |
| Concrete tile roof installation | $700 – $1,200 per square |
| Flat roof installation | $550 – $900 per square |
| Metal roof installation | $900 – $1,500 per square |
| Minor roof repair | $250 – $600 |
| Valley, ridge, or step flashing replacement | $300 – $800 |
| Single skylight flashing replacement | $300 – $700 |
| Pipe boot replacement | $200 – $500 |
| Small flat roof patch | $350 – $700 |
| Chimney cap installation | $300 – $600 |
| Fascia board replacement | $6 – $12 per linear foot |
| Roof inspection | $150 – $400 |
Coastal conditions push San Pedro prices toward the upper end of these ranges: rusted flashing, extra sealant on windward ridge caps, and moss removal on shaded slopes all add labor. Whatever the number, you’ll see it in writing before we start, and the invoice will match the estimate.
Neighborhoods We Serve in San Pedro
We cover all of San Pedro, from the coastal bluffs to the hillside terraces. Crews typically reach most San Pedro homes within one to two business days for scheduled repair work, with faster scheduling for urgent leaks.
- Coastal San Pedro
- Central San Pedro
- Vista del Oro
- Northwest San Pedro
- Harbor Highlands
Service Area – Cities Near San Pedro
While this page covers San Pedro specifically, Mercer Roofing also serves nearby communities across the South Bay and Harbor areas. Homeowners in Rancho Palos Verdes, CA, Carson, CA, Torrance, CA, and Signal Hill, CA can expect the same written pricing and badged technicians at the door.
Serving San Pedro, CA - Our Local Coverage Area
We’re based in the San Pedro 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 Roofers in San Pedro
For active leaks, we prioritize scheduling and can often have a technician out within one to two business days. Every visit starts with a written price before any work begins, and repair work includes a written guarantee. Call (424) 435-5428 and a live person will answer, 24/7.
Most roof repairs do not require a permit, but full roof replacements often do, and the specific requirements depend on your home’s location and roof type. We handle permit paperwork as part of installation projects, and we never start a job without the proper approvals in place.
Every repair includes a written guarantee that covers the work performed for 365 days. If a repair fails within that window, we return and make it right at no charge. The guarantee is written, not verbal, so you always know what’s covered and for how long.
If you’re ready to schedule an inspection or get a written price for roof work in San Pedro, call Mercer Roofing at (424) 435-5428. We’ll send a technician whose name and photo you already have, and the price in writing before anything goes on your roof.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Pedro Customers Say
"Chimney flashing was the culprit for years of dark stains on the ceiling. Fixed it in one visit and no more stains."
- Ian O."Replaced the ridge cap and drip edge, and fixed a sagging gutter that nobody else mentioned. Fair price."
- Phil N."Honest inspection. He went up, took photos, and told me I had maybe five more years instead of selling a full replacement."
- Xavier L.