Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Roofing: The San Francisco Owner’s Guide
Bradford Remodeling Co San Francisco stocks and installs CGI-compatible roofing parts, flashings, and replacement panels for homes across San Francisco. Typical installed repair pricing runs $470 to $2,125 depending on the part, roof access, and how much substrate repair is behind it. Most CGI roofing failures show up as a stain on the ceiling first. The actual failed part is often a pipe boot, a valley flashing, or a corroded fastener, and we can usually match it and fix it in one visit.
You’ll know something is wrong when water shows up where it shouldn’t. In San Francisco, the marine layer keeps roofs wet for long stretches and the salt air near the Avenues eats at exposed metal faster than inland. We see CGI panels that still have good color but the fasteners around them have gone. The panel isn’t the problem. The grommet washer is. That’s the kind of distinction that changes the quote from a full re-panel to a fastener swap and reseal.
Key Takeaways
- We install CGI-compatible repair parts and can match most current-series profiles from stock or direct order.
- Installed repair work in San Francisco typically falls between $470 and $2,125, with a written price before we begin.
- We’re an independent contractor, not a CGI dealer or affiliate. We work with the parts because they’re common on Bay Area roofs and we know how they fail.
- Every repair carries the 365-Day Done Right Promise in writing.
Styles & brands we work with
Which CGI Models This Applies To
CGI produces several metal roofing profiles that show up regularly on San Francisco homes. The most common we encounter are standing seam panels, exposed-fastener corrugated panels, and stone-coated steel shake or tile profiles. Each takes different clips, different flashings, and different fastener patterns, so identifying the exact profile matters before we order anything.
The fastest way to identify your CGI panel is the mill stamp or inkjet code on the underside of a removed panel. If that’s gone, we measure the rib height and spacing. CGI’s stone-coated profiles have a specific chip texture and a foam backer on some series that changes the clip requirement. One compatibility gotcha: older CGI stone-coated panels use a different batten profile than the current series. You can’t seat a new panel on an old batten and get a clean lap. We match the generation before we order, not after.
OEM parts cost more and carry the manufacturer’s own warranty language. Good aftermarket matchings from brands like GAF and CertainTeed for underlayment and flashing components work in many applications. We’ll give you the straight choice and a written price either way. For stone-coated CGI specifically, we default to OEM-matched clips and flashings because the tolerances are tight and a generic substitute creates a leak point at exactly the wrong place.
Signs Your CGI Roofing Is Failing
- Ceiling stains below roof penetrations. This usually points to a failing pipe boot or vent flashing, not the panel. The rubber gasket dries out, cracks, and lets water travel down the pipe. In San Francisco’s wet winters this happens sooner than you’d expect.
- Loose or lifted panels at the edges. Wind along the Sunset and Richmond districts works fasteners loose over time. You’ll see a panel that’s no longer sitting flat. The neoprene washer under the fastener head has likely died, and the panel is now flapping.
- Granule loss on stone-coated profiles. If you’re finding granules in the gutter, the stone coating is shedding. Some loss is normal in year one. Steady loss after that means the base coat was compromised or the panel is getting sand-blasted by wind-driven debris.
- Visible rust streaks at panel laps or fastener lines. This is the classic San Francisco failure. Salt air from the ocean accelerates corrosion, and once a fastener head rusts, water follows the threads straight into the substrate. The streak is the symptom, the fastener is the cause.
- Water in the soffit or fascia boards. This often means the drip edge or eave flashing failed, not the roof surface itself. Water wicks back under the panel edge and rots the boards behind the gutter. By the time you see paint bubbling, the substrate is already wet.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In San Francisco, expect to pay anywhere from $470 to $2,125 for a CGI roofing repair, installed. Small jobs like a single pipe boot replacement or a handful of fastener swaps sit at the low end. Replacing a section of damaged stone-coated panel or rebuilding a valley with new flashing and underlayment runs higher.
| Repair Type | Typical Installed Range (San Francisco) |
|---|---|
| Pipe boot / vent flashing replacement | $470 – $900 |
| Fastener replacement & re-seal (up to 40 fasteners) | $590 – $1,100 |
| Panel replacement (exposed-fastener, small section) | $820 – $1,650 |
| Valley or eave flashing rebuild | $1,180 – $2,125 |
| Stone-coated panel match & replace | $1,420 – $2,125 |
The range is driven by access, roof pitch, and what’s underneath. If the substrate is rotted from long-term water, we have to address that before laying the new part. We walk you through the line items: part cost, labor, disposal, and any substrate repair. Every job gets a written price before we start, and every completed repair gets our 365-Day Done Right Promise. If it fails within a year, we’re back at no charge.
DIY or Call Us?
There are things you can safely check. Clean your gutters so you can see granule loss. Look at the ceiling after a real rain. Walk the perimeter and note any panel that looks lifted or any fastener line that’s rust-streaked. Photograph what you see. That’s useful. Climbing onto a wet San Francisco roof, especially a two-story Victorian with a steep pitch, is not useful. It’s dangerous.
Working on a metal roof means walking the right seam pattern, using the correct fastener torque, and knowing how to cut a panel without voiding your remaining warranty. High-tension work with lifts, harnesses, and wet coastal surfaces is not the place to learn. If you know your way around a driver and the failure is a single exposed fastener you can reach from a ladder, sure. Otherwise, call us at (831) 610-5598. We’ll get you a straight number for the work.
FAQs
A properly installed CGI stone-coated or standing seam roof typically lasts 40 to 50 years in San Francisco, but fasteners and flashings usually need attention around the 15- to 20-year mark because of salt air and persistent moisture. The panels outlive their hardware. Routine fastener and flashing maintenance extends the full system. Call (831) 610-5598 and we’ll inspect what you have before it becomes a ceiling stain.
Yes, most failures are localized and repairable. Pipe boots, valley flashings, edge flashings, and fastener runs can all be replaced without touching the majority of the roof. Full replacement only makes sense when the panels themselves are failing or the substrate is shot. We’ll tell you which is which and give you a written scope either way.
Most single-part repairs take a half day on site. A valley rebuild or a stone-coated panel replacement can run a full day. Weather in San Francisco dictates scheduling more than anything else. We’ll give you a window, and we call you back the same day to confirm.
We stock common pipe boots, fasteners, sealants, and some exposed-fastener profiles on the truck. Stone-coated CGI panels and their matching clips are usually ordered to match your specific profile and generation. We’ll verify what you need, order it, and confirm the written price before we lock the date. We also stock parts for KraftMaid, Cambria, and Silestone for our kitchen work, but roofing is roofing. Straight number, real scope, no surprises at close-out.
Call Bradford Remodeling Co San Francisco
If you have a CGI roof that’s leaking, lifting, or shedding granules, call us at (831) 610-5598. Curtis Lane and the crew will get you a written, line-item quote for the repair, including the part, the labor, and the substrate work if any. Every job is backed by the 365-Day Done Right Promise. A live person answers the phone. No automated runaround.
Written by Curtis Lane, Owner, Bradford Remodeling Co – San Francisco, CA at Bradford Remodeling Co San Francisco, serving San Francisco and nearby areas.
