Shingle Roofing
America's Most Popular Roofing. Installed by Experts

The Material Sitting on Roughly Three Out of Four East Bay Homes

Drive any street from Antioch to Dublin and count roofs. Seven or eight out of every ten you see are asphalt shingle, and most of those are architectural (laminate) shingle rather than the flat 3-tab product that dominated through the 1990s. There's a reason for that dominance. Shingles are quick to install, forgiving in color and profile choices, code-compliant in almost every jurisdiction we work in, and the price per square lands somewhere most homeowners can actually cover without a second mortgage.

I've been pulling shingle permits in Concord, Walnut Creek, Antioch, and Brentwood since 1988, and the product itself has changed more in the last fifteen years than it did in the fifty before that. Today's GAF Timberline HDZ is not the same thing as the Timberline 30 I nailed down in 1995. The adhesive bands are wider, the nailing zones are marked on the shingle itself, and the wind ratings genuinely hold up when we hit a Diablo event.

What Is Asphalt Shingle Roofing, Really

An asphalt shingle is a fiberglass mat saturated with asphalt, topped with ceramic-coated mineral granules that do the actual UV and fire protection work. Architectural shingles are two of those laminated together, which is where the shadow line and the dimensional look come from. 3-tab is a single layer with cutouts, weighs about half as much, and is functionally obsolete for any job we'd put our warranty on.

The shingles we install day to day are GAF Timberline HDZ (our default), Timberline UHDZ when a customer wants the heavier profile, Timberline AS II for impact-rated jobs in the Oakland and Berkeley hills, CertainTeed Landmark and Landmark Pro, the Presidential Shake line when someone wants a faux-shake look without the fire-zone problems of actual wood, Owens Corning Duration and Duration Storm, and Malarkey Vista AR or Windsor when a homeowner wants the polymer-modified SBS option for hail and debris resistance.

When Shingles Make Sense (and When They Don't)

Shingles are the right call for most flatland East Bay homes. If you're in Concord, Antioch, Brentwood, Oakley, Dublin, or San Ramon, with a normal 4:12 to 8:12 pitch and a budget that doesn't stretch to tile or metal, architectural shingles are going to deliver the best cost-per-year of anything we install.

Here's where I'd push you toward something else. If your roof pitch is under 2:12, don't use shingles — water sits too long and crawls under the tabs. You want a TPO or modified bitumen membrane. If your framing is already sized for tile and you've got a Mediterranean home in Alamo or Orinda, shingles will look wrong and underperform against the neighborhood baseline. And if you're in a Chapter 7A very-high fire hazard zone with heavy ember exposure, I'd rather put a Class 4 impact-rated assembly or a metal roof up there than bank on asphalt granules to survive a direct ember shower.

One thing I'll say straight: light-colored shingles fade noticeably faster in Concord and Brentwood UV than the manufacturer brochures admit. A driftwood or weathered-wood blend that looks perfect at year two starts washing out around year eight or nine. It's not a failure, it's physics, but you should know it before you pick the color.

Brands and Product Lines We Install

GAF Timberline HDZ is the shingle we hand to about 60% of our customers. 130 mph wind warranty with the StainGuard Plus algae package, LayerLock technology, and the StrikeZone nailing area that basically eliminates high-nailing mistakes. We're GAF Master Elite (fewer than 2% of contractors nationally hold it), which lets us write the Golden Pledge warranty when the homeowner wants the full 50-year coverage.

GAF Timberline UHDZ is the thicker, more dimensional version — worth the upcharge if you want the shadow line to read from the street.

GAF Timberline AS II is our impact-rated pick. Class 4 UL 2218 rating, which is what the insurance carriers want to see before they'll write the premium discount for hail and debris resistance. We install it routinely in the hills above Moraga, Lafayette, and Orinda where oak-branch drops are the real wear mechanism.

CertainTeed Landmark and Landmark Pro are our SELECT ShingleMaster line (we hold that certification alongside Master Elite), and Presidential Shake is the flagship when a customer wants something that reads like wood shake from the curb.

Owens Corning Duration, Duration Cool, and Duration Storm use the SureNail reinforced nailing strip, which is genuinely one of the best innovations in the category. If you're in an HOA that specifies Owens Corning colors, Duration is what we'll spec.

Malarkey Vista AR and Windsor use SBS polymer-modified asphalt — more flexible, better cold-weather performance, and better impact resistance than standard oxidized asphalt. They're also made in Portland, which some customers care about.

The Installation Process We Actually Run

Tear-off down to bare deck comes first. We don't overlay — CRC R908.3 allows two layers max, but overlays hide rotten sheathing, failed underlayment, and bad ventilation, and they always come back to bite. Once the deck is clean, we sister any delaminated or cracked sheathing, then roll synthetic underlayment across the field and peel-and-stick ice-and-water shield in every valley, at all eaves in the wildfire overlay zones, and around every penetration.

Starter strip goes down first at the eaves and rakes — self-sealing adhesive strip on the weather edge, which is what actually prevents wind uplift on the bottom course. Then the field shingles, with four nails per shingle as the minimum and six nails in the high-wind zones (the 130 mph rating is void if you shortcut this). Nails land in the manufacturer-designated nailing strip, never above or below it. Step flashing at every sidewall, counter-flashing tucked into the siding, kick-out flashing at the bottom of every wall termination because that's where 80% of wall rot starts. Hip and ridge caps finish the job.

It's a two-to-four-day project for a typical 20 to 35 square Concord home, assuming weather cooperates and we don't find surprises in the decking.

Code Requirements in the East Bay

Asphalt shingles fall under CRC R905.2, which covers slope minimums (2:12 absolute minimum, 4:12 is what I'll actually warranty), fastener type and placement, and underlayment requirements. R908.3 caps you at two roof layers total. If your house in Walnut Creek already has two layers, you're tearing off — period.

Chapter 7A is the one that matters most in the hills. If you're inside a Very High Fire Hazard Severity Zone (most of the Oakland and Berkeley hills, much of Orinda and Lafayette, the upper reaches of Alamo and Moraga, and a meaningful slice of Clayton and Martinez), you need a Class A assembly — not just a Class A shingle, but the whole system stacked up to Class A. Ember-resistant vents, noncombustible eave closures, and underlayment that's part of the tested assembly.

Berkeley and Oakland both have cool-roof ordinance language that can push you toward reflective shingles or a cool-colored product on certain replacement projects. We check the specific parcel before we write the estimate — it's not universal, but when it applies, it applies.

Pricing and Timeline

Installed pricing runs roughly $550 to $1,400 per square depending on the product tier and the complexity of the roof. A straightforward one-story ranch in Antioch with 22 squares of GAF Timberline HDZ lands around $14,000 to $18,000. A two-story Danville home with 34 squares of CertainTeed Presidential Shake, impact-rated underlayment, and three valleys runs closer to $30,000 to $45,000.

Realistic timeline from contract to cleanup: two weeks on the permit (same-day for most Contra Costa County jobs through ePermits Center, three days if structural review is needed), one day for material delivery, two to four days on the roof, one day for final inspection.

Lifespan is where I'll give you the honest number instead of the brochure. Manufacturer warranties read 30 to 50 years. Real-world service life in the Concord and Antioch heat belt is 18 to 25 years for a well-installed premium architectural shingle. If you want 40-plus years without re-roofing, you're buying tile or metal — not shingles.

East Bay Cities Where Shingles Work Best

Concord, Antioch, Brentwood, Oakley, Pittsburg, Dublin, San Ramon, Livermore — flatland heat belt, mostly tract construction, framing sized for composition, HOA rules that accept architectural shingles without a fight. These are the cities where shingles are the default and should be.

Walnut Creek and Pleasant Hill flatland — same answer. The hills above Walnut Creek get into Chapter 7A territory and I'd have a different conversation there.

Martinez and Pleasant Hill — mostly shingle, with some tile on the Mediterranean homes. We do a lot of Duration and Landmark work in these neighborhoods.

Oakland and Berkeley flats — shingles are fine, sometimes with a cool-roof color requirement. The hills are a different conversation entirely.

Frequently Asked Questions

Ready to Talk Specifics

If you're weighing a shingle re-roof and want a contractor who'll pull the samples out of the truck, measure your actual roof, check your parcel for Chapter 7A status, and write you a line-item estimate you can compare against anyone else's, that's what we do. We've been doing it in the East Bay since 1988.

Call East Bay Roofers at (925) 722-4916, or request an estimate online. We're GAF Master Elite and CertainTeed SELECT ShingleMaster certified, C-39 licensed (CA #987654), and sitting on a 4.9 out of 5 average across 527 reviews. No high-pressure close, no disappearing act after the deposit.