Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roofing Company Across San Lorenzo
Roof repair in San Lorenzo typically runs $425-$1,850 depending on the issue, and most Roof Replacement in San Lorenzo on the Bohannon tract homes here lands between $14,000 and $24,000. Those numbers reflect the reality of this specific housing stock: 75-to-80-year-old roofs with original board sheathing, multiple accumulated shingle layers, and decades of marine-layer moisture working against the fasteners. We answer the phone at (945) 303-9821, and we’ll give you a written price before any work starts. That’s how we operate in San Lorenzo, and we don’t negotiate that away.
San Lorenzo is not like roofing in San Leandro or Hayward. The homes here were built almost entirely as David Bohannon’s postwar planned community starting in 1944, which means thousands of parcels share the same low-pitched geometry, the same skip sheathing, and the same deferred maintenance timeline. We know what we’re going to find before we get on the ladder, because we’ve seen it hundreds of times across this community. If you live near Via Alamitos, along Paseo Grande, or in the streets off Hesperian Boulevard, your roof is likely a Bohannon original or an early re-roof sitting on top of one.
Why Tilehurst Roofing Is San Lorenzo’s Preferred Roofing Company
We’re part of the Kingswell family of roofing companies, founded in 2000, and our Roofing Company team serves San Lorenzo with the same standard applied everywhere: a written price before the first nail, a written guarantee on every repair, and a live person who answers the phone around the clock. Greg Holloway leads our crews with a simple rule: if a repair fails inside the guarantee period, we return and correct it at no charge under the 365-Day Done Right Promise. That’s not a premium add-on. It’s the floor.
San Lorenzo homeowners have told us the same story more times than we can count. A contractor no-showed. The price changed at the door. A repair lasted six weeks. That’s why we show up in the window we gave, leave the property cleaner than we found it, and put every guarantee in writing before the crew leaves. Our technicians are background-checked and uniformed, so you know exactly who is on your roof. And when you call at 9 p.m. because a section of drip edge tore loose in the wind, a person picks up. Not a voicemail. Not a callback queue. Every single time.
One more thing that matters here specifically: San Lorenzo is unincorporated Alameda County, which means roofing permits go through the Alameda County Community Development Agency, not a city building department. Contractors who work mostly in incorporated San Leandro or Hayward sometimes get tripped up by that. We don’t. We know the permit path, we know the inspection scheduling rhythm, and we factor that into the job timeline from day one.
Metal Roof Installation in San Lorenzo
Metal roof installation in San Lorenzo typically runs $18,000-$38,000 for a full standing-seam system on a Bohannon-era single-story, and it’s the one upgrade that fundamentally changes how your roof handles this fog belt. The marine layer settles onto San Lorenzo roofs overnight and into the morning, keeping shingles damp for hours longer than inland East Bay neighborhoods. That persistent moisture is what accelerates granule loss on composition shingles and feeds the rust that eats through galvanized drip edge. Metal doesn’t absorb that moisture. It sheds it.
Marine-Grade Fasteners and Trim
This is where the coastal-spec conversation gets real. The standard inland roof uses electro-galvanized nails and drip edge. In San Lorenzo, that hardware pits and bleeds rust streaks within three to five fog seasons. We specify stainless ring-shank nails and painted aluminum drip edge on every metal roof we install here. The hardware costs more than the inland spec, usually 10-15% more on the total job. But the cheap spec is what fails first.
When a Metal Roof Makes Sense Here
If you’re planning to stay in your San Lorenzo home for more than ten years, the math favors metal. It carries a 40-plus-year service life, it shrugs off the fog, and it handles the low-pitched Bohannon geometry well when the panel profile is selected correctly. We’ll walk you through GAF and Boral options so the roof fits the home, not whatever happens to be on the truck.
Residential Roofing in San Lorenzo
Residential roofing in San Lorenzo means working on homes built between 1944 and 1955, almost all of them single-story Bohannon Village tract houses with low-slope hip or gable roofs and original board sheathing. A full tear-off and re-roof with architectural composition shingles on these homes runs $14,000-$24,000, and the range depends mostly on decking condition and how many layers we’re removing. Most San Lorenzo roofs we open up have two or three accumulated layers. The decking underneath is often original. Sometimes it’s brittle enough that fasteners won’t bite.
Tear-Off and Decking Assessment
On a Bohannon-era single-story off Via Alamitos, we tore off three layers of composition shingles and found the original board sheathing dried to the point that fasteners barely held. We re-decked, laid ice and water shield through the valleys, and set new architectural shingles with stainless ring-shank nails instead of the electro-galvanized ones the prior roof had used. Two doors down, our crew replaced rusted-through galvanized drip edge and a rotted fascia run the marine-layer fog had been feeding for years. Both jobs got marine-spec hardware. The cheap inland spec is why they failed the first time.
What We Check Before Quoting
Every residential roofing quote in San Lorenzo starts with an attic and decking inspection. We’re looking at the board sheathing, the venting ratio at soffit and ridge, the gutter and downspout routing, and the condition of the existing underlayment. If the decking is compromised, that changes the scope, and we tell you in writing before we start. Not after. The Kingswell Way is simple: say the price before the work, show up in the window we gave, and put the guarantee in writing.
Trusted Brands We Service in San Lorenzo
We install and service roofing systems from GAF, Atlas, and Tamko, and we keep common trim, drip edge, and fastener stock staged for San Lorenzo jobs so we’re not waiting on a supply run when your roof is open. You get a genuine choice of manufacturer and product line, matched to your home’s pitch, your budget, and how long you plan to stay in the house. Every material we specify for San Lorenzo gets the marine-grade hardware conversation by default. That’s not optional here. That’s the spec.
Common Roofing Company Problems We See in San Lorenzo Homes
- Rust-streaked drip edge and vents on roofs that aren’t old. The overnight marine layer keeps rooflines damp well past sunrise, and electro-galvanized or bare-steel flashings pitted and bleed within a few fog seasons. Replacement requires marine-grade painted aluminum or stainless.
- Re-roofing over brittle skip sheathing without a tear-off. Bohannon tract homes were built with board sheathing, not plywood. After 70-plus years, that wood is often dried out and can’t hold a fastener. Roofing over it means the new square never gets a real decking assessment.
- Algae streaking and moss on north-facing slopes. Fog lingers on San Lorenzo roofs into mid-morning, especially where soffit and ridge venting is undersized. That damp, shaded surface is exactly where granule loss starts and spreads.
- Drainage concentration near San Lorenzo Creek. Low-graded postwar lots close to the creek channel water toward foundations. Gutters and downspout routing become a recurring add-on conversation on these parcels, and undersized systems fail quickly.
Pricing for Roofing Company in San Lorenzo, CA
Roof repair in San Lorenzo runs $425-$1,850 for most single-issue jobs: a section of damaged shingles, a valley leak, replacement drip edge, a rotted fascia run. Full tear-off and re-roof on a Bohannon-era single-story runs $14,000-$24,000 with architectural composition shingles. Metal roof installation runs $18,000-$38,000 depending on panel profile and decking condition. The coastal-spec hardware we use, stainless fasteners, painted aluminum drip edge, correct underlayment, adds roughly 10-15% to the hard-cost line. It’s what keeps the roof from failing in a decade.
Call (945) 303-9821 for a written, line-item quote. Estimates are free, and the price is in your hands before any work starts. Never after.
We Also Serve Cities Near San Lorenzo
Our crews work throughout the East Bay flatlands and hills, including Roofing Company in San Lorenzo and the communities around it. We handle roofing jobs in Castro Valley, San Leandro, Union City, and Oakland. Same written pricing, same marine-spec hardware standard, same live person on the phone.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Roofing Company in San Lorenzo
Rust streaks on drip edge and vent flashings are almost always electro-galvanized or bare-steel hardware reacting to the marine layer fog that settles over San Lorenzo overnight. The fog keeps the roofline damp for hours after sunrise, which pits the galvanized coating and bleeds rust down the fascia within three to five seasons. The fix is replacing the flashings with painted aluminum or stainless, which is what we specify on every San Lorenzo job. Call (945) 303-9821 for an exact quote on replacing your drip edge and vents.
You need a tear-off on a Bohannon tract home if there are already two or more layers, or if the original board sheathing hasn’t been assessed in decades. Building code limits how many shingle layers a roof can carry, and roofing over brittle skip sheathing means the new fasteners never get a solid bite. We include a decking assessment in every quote so you know what’s under the layers before we start. Call (945) 303-9821 and we’ll schedule a roof inspection in San Lorenzo this week.
The Alameda County Community Development Agency issues roofing permits for San Lorenzo, because the community is unincorporated and has no city building department. Contractors who work mostly in incorporated San Leandro or Hayward sometimes get the permit workflow wrong here, which delays the job. We pull permits through Alameda County on every San Lorenzo roof, and we schedule inspections through the County, not a city. That’s part of the written quote, not an afterthought.
The fog itself doesn’t force a specific material, but it does force a specific hardware and flashing spec. Composition shingles work fine on San Lorenzo roofs if they’re installed over a solid deck with marine-grade fasteners and painted aluminum drip edge. Metal roofing handles the damp conditions exceptionally well, but it costs more up front. The material choice depends on your budget and how long you plan to stay. We’ll show you options from GAF, Atlas, and Tamko with the coastal-spec numbers included.
Homes on the low-graded postwar lots near San Lorenzo Creek collect more roof runoff than parcels on higher ground, which means gutters and downspout routing do more work and fail faster when undersized. We check gutter capacity, downspout count, and drainage direction on every roof inspection here, and we flag when the system is undersized for the lot. Call (945) 303-9821 for a free estimate on roof and gutter work in San Lorenzo. Get a written price before anything moves.
Written by Greg Holloway, Owner at Tilehurst Roofing, serving San Lorenzo under the Kingswell Guarantee and the 365-Day Done Right Promise.






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