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Oldcastle Roofing: The San Francisco Owner’s Guide
We install and service Oldcastle roofing products throughout San Francisco, and most roof repairs run between $470 and $2,125 depending on what failed and how much of the system needs attention. If you’re holding a cracked tile, a slipped shingle, or a flashing detail that’s pulling away from a dormer, the typical path is a same-week assessment followed by a written price before any work begins. The way most San Francisco homeowners discover an Oldcastle roof problem is simple: water shows up on a ceiling after a heavy fog cycle or a winter storm, or a neighbor points out missing material after a wind event off the Pacific.
The good news is that Oldcastle products are widely serviceable, and we keep common repair stock on our trucks. The honest caveat is that some failures need a closer look before anyone can quote a real number. We’ll walk you through exactly what to expect, what things cost in San Francisco, and when a repair makes more sense than a replacement.
Which Oldcastle Models This Applies To
Oldcastle is a substantial manufacturer, but most of what we see on San Francisco rooflines falls into their concrete roof tile and clay tile product lines, along with their asphalt shingle offerings labeled under the Oldcastle umbrella. Concrete tile profiles like their flat, low-profile, and high-profile barrel shapes are common on 1920s through 1960s homes in the Richmond and Sunset Districts, where the original builders favored tile for the fog and salt air. Clay tile appears more often on Spanish Revival and Mediterranean homes around the Mission and Noe Valley, where the aesthetic is part of the home’s character.
If you’re trying to identify your exact Oldcastle part, start with the underside of a removed tile or shingle. Concrete tiles typically carry a stamp with the profile name and plant location. Clay tiles may have a maker’s mark pressed into the back. The measurements matter more than the name: Oldcastle tile widths commonly run 9 to 13 inches, with lengths from 16 to 18 inches, and the profile height dictates whether we can match with a current production piece or need to source from a salvage yard or a specialty supplier. For asphalt shingles, the key identifiers are the exposure, the number of tabs, and the color blend. A good rule: if your roof is over 25 years old, exact OEM matches get harder, and a high-quality aftermarket tile or shingle matched by color, profile, and weight often performs just as well and is available faster.
Styles & brands we work with
Signs Your Oldcastle Roofing Is Failing
- Cracked or broken tiles. Concrete and clay tiles in San Francisco crack for predictable reasons: tree branches dropping during winter storms, foot traffic from a previous repair or solar installation, and repeated thermal expansion where the tile was installed too tightly against a wall or penetration. A cracked tile lets water directly into the underlayment, which is the real barrier you’re relying on.
- Slipped or missing tiles. High wind and aging fasteners are the common culprits. When tiles slip, the overlapping pattern breaks, and water finds the gap. We see this most often on exposed western-facing slopes that take the full brunt of wind coming off the Pacific.
- Granule loss on asphalt shingles. Oldcastle asphalt shingles shed granules as they age, and you’ll see them collecting in gutters or at the base of downspouts. Heavy granule loss accelerates UV damage to the asphalt underneath, which shortens the roof’s remaining life.
- Flashing separation around chimneys, skylights, and dormers. In San Francisco, the constant expansion and contraction from fog-damp mornings to dry afternoons works flashing loose over time. Once flashing lifts, water travels along the underside of the roof deck far from the visible gap, which is why the interior stain often shows up in an unexpected room.
- Water stains on ceilings or walls, or damp insulation in the attic. This is the failure the others lead to. By the time you see a ceiling stain, water has already saturated the underlayment or the deck in that area. If you catch it early, a localized repair may be all that’s needed.
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AfterReplacement Cost & What’s Included
Roof repair in San Francisco runs anywhere from $470 for a small, accessible fix to $2,125 when the work involves multiple tiles, flashing replacement, or work on a steep or difficult-to-access section. If the damage is extensive enough that repair no longer makes sense, a full roof replacement ranges from $9,440 to $23,600 depending on the roof size, material, pitch, and how much structural repair the deck needs once the old material is off.
Every estimate we give includes a written line-by-line breakdown: the specific Oldcastle-compatible parts or matching tiles we’ll use, the underlayment and flashing materials if those are involved, the labor, and any disposal charges. There are no open-ended allowances and no “we’ll figure it out once we’re up there” line items. The 365-Day Done Right Promise covers the repair after we’re done: if something wasn’t done right, we come back and make it right.
We’re an independent service provider, not affiliated with Oldcastle. That means we can source whichever part is actually the best fit for your roof, not whichever part the factory’s warranty program dictates.
DIY or Call Us?
There are two things every San Francisco homeowner can safely do before calling anyone. First, grab binoculars and inspect the roof from the ground or from a neighbor’s yard. Look for cracked, slipped, or missing tiles, and look at the flashing around anything that pokes through the roof. Second, check the attic on a dry day for water stains on the underside of the deck or dampness around penetrations. Those two observations give us a useful starting point for a phone conversation.
What we don’t recommend is walking a tile roof yourself. Oldcastle concrete and clay tiles crack under foot traffic, especially on older roofs where the tile has weathered and become more brittle. A single misstep can turn a $500 repair into a multi-thousand-dollar replacement, and the fall risk on a steep San Francisco roof is real. We use trained roofers who know how to distribute weight across the roof safely, and they carry the materials to make the repair in one visit. If you’ve already got water coming in, call us at (831) 480-4497 and we’ll get someone out to assess it.
FAQs
Concrete and clay tile from Oldcastle typically last 50 to 75 years on San Francisco homes, with the underlayment beneath them usually needing replacement around 25 to 30 years. Asphalt shingles from the same manufacturer generally last 20 to 30 years depending on the slope, exposure, and how well the roof was ventilated. If you have a tile roof that’s approaching the 25-year mark, the tiles may still be fine but the underlayment is worth an inspection. Call (831) 480-4497 and we’ll put eyes on it.
In most cases, the tile gets replaced rather than repaired. Sealants and adhesives can buy a few years on a hairline crack, but they break down under San Francisco’s temperature swings and UV exposure. Replacement of a single cracked tile usually costs between $470 and $900 including the tile, the labor, and the safety setup. Call us for an exact quote on your specific tile profile, and we’ll match the color as closely as current production allows.
Most single-area repairs on Oldcastle tile or shingle roofs take two to four hours once the crew is on site. Jobs that involve replacing flashing around a chimney or skylight, or that require matching hard-to-find tile profiles, may take a full day and sometimes require a follow-up visit if we need to order from a specialty supplier. We’ll tell you the expected timeline in writing before any work starts, and we’ll leave the work area cleaner than we found it.
We keep common Oldcastle-compatible repair tiles, fasteners, underlayment, and flashing materials on our trucks, which lets us handle most San Francisco roof repairs in a single visit. For unusual profiles, specific clay tile colors, or older discontinued lines, we source from specialty suppliers and architectural salvage yards the same week. If you call us with the tile measurements and a photo, we can often confirm before we arrive whether we have the part on hand.
No. The written price we give you before any work begins is the price you pay, and we don’t issue change orders for conditions we could have seen during the initial assessment. If we find rotted decking or failed underlayment that wasn’t visible from the surface, we’ll stop, show you photos, and give you a new written price for the additional work before touching it. You approve before we proceed. That’s the no-hassle upfront pricing we lead with on every project, and it’s what Graham Stein has always done: write out every cost before a single tool touches the floor. Tell me what the room needs to do, and we’ll figure out the rest from there.
Written by Graham Stein, Owner, Elmstead Remodeling San Francisco at Elmstead Remodeling San Francisco, serving San Francisco and nearby areas.
