SHINGLEROOFING

San Francisco is a San Francisco County community about 337 miles northwest of downtown Los Angeles. It sits close enough to the water that salt air is part of the equation on every roof, and that matters more to a roof than most homeowners expect. Marine layer mornings keep roofs damp long after sunrise, and onshore wind drives rain sideways into flashings, and the roofs that last are the ones specified for those conditions rather than whatever was cheapest on the day. This guide covers what San Francisco homeowners should know before they replace or repair a shingle roof, from choosing a shingle to what the job actually costs and how long it takes.

How the weather in San Francisco ages a roof

Marine layer mornings keep roofs damp long after sunrise, and onshore wind drives rain sideways into flashings, and that is the backdrop to everything below. The three that matter most in San Francisco:

Heat and UV. Asphalt hardens as it ages, and heat accelerates it. A brittle shingle cracks where a flexible one would move, which is why old roofs fail in summer and leak in winter.

Wind. A correctly installed starter course and sealed ridge caps are what keep a roof on in a 60 mph gust. Nail placement is the other half, and it is invisible once the roof is finished.

Rain in bursts. San Francisco doesn't get much annual rainfall, but it tends to arrive fast, and water moving at speed finds any weak flashing detail.

How we run the job in San Francisco

Synthetic underlayment goes down over the whole deck, not just the valleys.

• Financing exists if you want it, and nobody pushes it on you.
• Fascia and rafter tails get checked while the edge is open.
• You get a start date and a finish date in writing, and we hold them.
• Rake and eave metal is new on every job; reusing bent metal is false economy.

Three-tab, architectural or designer in San Francisco

Three-tab shingles are flat, uniform, and the least expensive option. They carry lower wind ratings and shorter warranties, and they're becoming less common on full replacements — but they still make sense for a rental property or a roof that only needs to last another decade.

Architectural (dimensional) shingles are what we install on most San Francisco homes. They're built from two laminated layers, which gives a thicker shadow line, better wind performance, and a longer warranty for a modest step up in price. The colors that suit the neighborhood — Sierra Grey, Sandcastle, Moonlight, and Brownwood — sit well against stucco, stone, and the hillsides behind them.

Designer or premium shingles imitate slate or hand-split shake with a heavier, more irregular profile. They cost more and weigh more, and on a custom home with high visibility from the street they can be worth it.

We commonly install Owens Corning, CertainTeed, and GAF product lines. All three make shingles rated for high wind when installed to the manufacturer's specification, which is the part that actually earns the rating.

Repair or replace?

Repairs are worth doing while the roof still has life in it. The test is whether the shingles away from the damage still bend instead of crack. A roof that has been layered over once already is a replacement, not a repair — there is nowhere left to nail into properly.

An honest inspection should tell you which situation you're in and show you the evidence — photos of what was found, not just a verdict. If storm or wind damage is involved, the same documentation is what an insurer will want to see.

What the job looks like start to finish

A typical San Francisco shingle replacement runs one to three days depending on size and access. Tight lots and alley access are common, so material staging and debris control get planned in advance. The sequence is consistent:

• Protection. Tarps and plywood over landscaping, walkways, pool equipment, and AC units.
• Tear-off. Old shingles and underlayment come off down to bare deck so the sheathing can be inspected.
• Deck repair. Damaged sheathing is replaced and the deck is re-nailed where needed.
• Underlayment and flashing. New underlayment goes down, with drip edge at the eaves and rakes, and new or reworked flashing at every penetration and wall.
• Shingles. Starter course, field shingles to the manufacturer's nailing pattern, then ridge caps and ventilation.
• Cleanup and walkthrough. Magnet sweep for nails, debris haul-off, and a final walkthrough with photos of the finished work.

Permitting is handled as part of the job — ask us how it applies at your address.

Making a San Francisco shingle roof last

Nothing on this list is expensive. Skipping all of it is:

• Clear gutters and valleys before the rainy season, especially under mature trees
• Keep overhanging branches trimmed back so wind doesn't drag them across the shingles
• Check attic ventilation and insulation — a cooler attic means a longer-lived roof
• Look over the roof after every significant wind event, from the ground with binoculars if need be
• Have flashings and sealant at penetrations inspected every few years
• Fix small leaks immediately, before water reaches the decking or framing

San Francisco, up close

Ask ten San Francisco owners about their roof and you get the same complaints: salt air and long damp mornings keep fasteners and flashings working hard. From the yard it is roughly 337 miles northwest to San Francisco - no travel surcharge, no week-long wait.

Crews rotate through Daly City, South San Francisco and Oakland, so the drive is routine.

• Solar panels get detached and reset on a schedule that matches the roofing crew.
• Gutters are pulled and refitted properly instead of being crushed by a ladder.
• Gutters are pulled and refitted where they block a proper drip edge.
• Chimney and wall flashings are replaced, not painted over with sealant.
• Skylights are re-flashed as part of the job rather than quoted as an extra later.

Insurance work moves faster when the damage is documented before the next storm. Expect photos, a measured scope and a number you can compare against anyone else.

What a shingle roof costs in San Francisco

Nobody can quote a San Francisco roof honestly from the street. These are the variables that move the number:

• Size and pitch. A steeper roof takes longer and requires more safety setup, and costs more per square than a walkable one.
• Layers and tear-off. Removing two existing layers costs more in labor and disposal than one.
• Decking condition. Rot or delaminated sheathing found during tear-off has to be replaced. A good estimate states the per-sheet price up front so it isn't a surprise mid-job.
• Complexity. Valleys, dormers, skylights, chimneys, and wall transitions each add flashing work.
• Material grade. The jump from three-tab to architectural to designer moves the number meaningfully.
• Accessory work. New underlayment, drip edge, ventilation, and gutters are often bundled into a replacement.

The fastest way to get a real number for your own roof is our free instant roof estimate tool, which uses aerial measurements of your actual property rather than a guess at square footage. For a firm written quote, we'll come out and look at the roof in person.

Signs your San Francisco roof needs attention

• Granules collecting in the gutters or at the bottom of downspouts
• Shingles that are curling, cupping, or lifting at the corners
• Bare or cracked shingles visible from the ground or a neighbor's upper window
• Missing shingles or displaced ridge caps after a wind event
• Staining on a ceiling or the top of an interior wall, especially near a chimney or skylight
• Daylight or water tracks visible in the attic
• A roof past 20 years old, whatever it looks like from the curb

A roof can look fine from the street and still be at the end of its service life. If yours is over two decades old, an inspection is worth doing before the first real storm of the season, not after.

Serving San Francisco and nearby

We work throughout San Francisco and the surrounding San Francisco County communities, including Daly City, South San Francisco and Oakland. If shingles aren't the right answer for your property, we also install and repair tile, torch down, TPO, and roof coatings.

Why most San Francisco roofs are asphalt shingle

Most of the housing stock in San Francisco is single-family, and asphalt shingle suits that profile for four practical reasons:

• They handle pitch. Anything from a low 4:12 up through the steeper roofs around Daly City takes shingles without special detailing.
• Repairs stay simple. A wind-lifted or cracked shingle is a targeted fix, not a section rebuild. That matters after a wind event, when several homes on one street need attention at once.
• Weight is rarely an issue. Unlike concrete or clay tile, a shingle roof doesn't usually raise structural questions on an older frame — useful when a home is being re-roofed over an original deck.
• The cost spread is wide. There's a shingle at nearly every budget, from a basic three-tab to a heavy architectural or designer profile.

Talk to a San Francisco roofer

We roof throughout the Bay Area, we're licensed and insured, and we answer the phone seven days a week from 7:00am to 10:00pm. Call for a repair, a second opinion, or a replacement quote. You'll get a straight answer either way, in writing.

Before, during and after

Ventilation gets looked at while the roof is open; most San Francisco attics run hotter than they should.

• Drone shots cover the steep sections, and the rest is checked on foot.
• You get a text when the crew is coming and a walk-through when they are done.
• Weather delays are called early rather than left to surprise you.
• We show you the soft spots before they are covered, not after.