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GAF Roofing in Pomona, CA | Weathervane Roof Repair
We provide independent Roof Repair – Pomona and GAF roofing service across the city, from inspections and leak repair to full tear-offs and re-roofs. The thing that makes our GAF work here different is simple: we know how Santa Ana winds treat Timberline and Royal Sovereign shingles on north- and east-facing slopes, because we’ve been repairing that exact damage for over a decade. We’re not authorized or endorsed by GAF, but we know their products the way you know your own street. Call (877) 755-4274 for a straight assessment of what your roof actually needs.

Why Pomona Residents Choose Us for GAF Service
When a Pomona homeowner calls us about a GAF roof, we already know what we’re likely to find before the ladder goes up. Wind-lift on the north slope. Brittle shingles that have been baking through three straight months of inland sun. Flashing sealant that looks like cracked pottery around the vents. That familiarity comes from years of GAF sales & service work on the specific housing stock this city throws at you: century-old craftsman bungalows near Lincoln Park on one block, 1960s tract homes on the east side the next.
Gil Tanner, our owner, grew up around the hillside homes of Montrose and started learning roofing fundamentals at Glendale Community College before putting in two decades on jobs across the San Gabriel Valley. He’s got a phrase that sums up how we work: “Tell me what the roof is actually doing, and I’ll tell you what it actually needs.” We apply that same thinking to every GAF roof we touch, from GAF service in Walnut to our work right here in Pomona. Repair first, replacement only when the deck and underlayment say it’s time.
Styles & brands we work with






Common GAF Roofing Problems We Solve in Pomona
- Wind-lifted tabs on north- and east-facing slopes. After a Santa Ana event, the wind funnels down off the San Gabriels and catches the edges of aging three-tab and early Timberline installations. We see missing tabs concentrated on one slope while the rest of the roof looks untouched. That’s not random, it’s wind dynamics, and we repair it by matching the existing GAF shingle and re-securing the course.
- UV-baked granule loss and brittleness. Pomona’s hot, dry summers are brutal on asphalt shingles. Granules wear off, the mat underneath gets brittle, and suddenly winter rain finds exposed underlayment. We check for granule accumulation in gutters and downspouts as an early warning sign.
- Cracked flashing sealant around vents and chimneys. This is the one we find most on 1950s through 70s tract homes across the east side. The sealant dries out, shrinks, and cracks under Pomona’s heat, then winter rain sneaks through. It’s a small repair that prevents a big leak.
- Layered shingle buildup hiding soft decking. Older Pomona roofs often have two or three layers of shingles stacked up. The weight masks what’s happening underneath, and by the time we get there, the decking may be soft or rotted. We inspect the deck whenever we do a tear-off, no exceptions.
- Slipped or cracked clay tile with failed underlayment on Spanish Colonial homes. Near downtown and the Lincoln Park area, the original tile roofs are gorgeous and worth preserving. But when a tile cracks or slips, water gets behind it and the old underlayment underneath is often too far gone to catch it. We repair the tile and replace the underlayment section so the system works again.
GAF Service in Pomona: What Local Conditions Mean for Your Equipment
Here’s the thing most roofing pages won’t tell you about Pomona: this city sits directly in a Santa Ana wind funnel. The winds come screaming down the San Gabriel Mountains and hammer the north and east sides of town harder than anywhere else in the valley. A GAF Timberline roof on a house in the 91768 ZIP code takes a completely different beating than the same roof in a neighboring city just ten miles west. We’ve repaired roofs after fall wind events where the north-facing slope had lost a dozen tabs while the south slope still looked brand new.
That concentrated wind uplift means GAF owners in Pomona should be checking their ridge caps and north-slope tabs every single fall, before the winds kick up. Once a tab lifts, the next wind event peels it back further, and then winter rain gets a direct path to the underlayment. Catching it early is the difference between a $400 shingle repair and a full re-roof.
GAF Models & Products We Service in Pomona
We service the full GAF shingle lineup including Timberline HDZ, Timberline UHDZ, Royal Sovereign, and standard Three-Tab. When a repair calls for replacement shingles, we use GAF OEM shingles to maintain system integrity. For underlayments and flashings, we’ll use quality aftermarket products where they perform as well or better. We keep common GAF colors and accessory parts stocked locally so Pomona turnaround is fast, and anything we don’t have on hand, we can source quickly through our local suppliers.
See the difference
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AfterGAF Service Pricing in Pomona
GAF shingle repair in Pomona typically runs between $295 and $625 for isolated wind or leak damage, depending on slope access and the number of shingles involved. A full GAF Timberline HDZ re-roof on a typical Pomona tract home generally falls between $8,500 and $14,500, while larger or steeper historic homes near downtown can push higher due to tear-off depth and deck replacement needs. The drivers are roof size, slope, number of existing layers, and deck condition. If you’d like a firm number, call (877) 755-4274 and schedule a free estimate. We’ll give you a written line-item quote, and we won’t push a replacement if a repair does the job.
Serving Pomona, CA — Our Local Coverage Area
We’re based in the Pomona 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 – GAF Roofing in Pomona
Pomona sits at the foot of the San Gabriel Mountains where Santa Ana winds funnel down and strike north- and east-facing slopes with concentrated force. Your GAF roof here experiences more wind uplift and tab loss than GAF in Covina or other nearby cities without that geographic exposure. We recommend a fall inspection of your north and east slopes every year, before the wind season, to catch lifted tabs early. Call (877) 755-4274 to schedule one.
Most wind damage we see in Pomona is repairable. We’ll match your existing GAF Timberline shingles, replace the missing or lifted tabs, re-secure the ridge cap, and check the underlayment and flashing. Full replacement only comes into play when the decking is compromised or the shingles are too aged and brittle to accept a repair. We’ll show you photos of what we find and give you the straight answer.
Yes. We repair clay tile and the underlayment beneath it on Spanish Colonial homes throughout Pomona’s historic neighborhoods. When we fix a cracked or slipped tile, we replace the underlayment section with a quality product that works with the existing system, so the roof keeps shedding water the way it was designed to. Call (877) 755-4274 for an estimate.
The signs are subtle, and they show up inside before they show up on the roof. Water stains on ceilings, peeling paint near vents, or a musty smell in the attic during winter rains all point to underlayment that’s baked out. On the roof itself, granule loss in your gutters and curled or cracked shingles are the tell. If you’re seeing any of that, call us for an inspection. We’ll tell you exactly what’s failing and what it’ll take to fix it.
We do. When a Pomona home has two or three layers of old shingles stacked up, a full tear-off and upgrade to GAF Timberline HDZ or UHDZ is a common fix. The tear-off lets us inspect the decking, replace any soft sections, and start fresh with a single-layer GAF system that’ll handle Pomona’s wind and UV exposure far better than layered roofing ever did. Call (877) 755-4274 for a free estimate and a written quote before you decide anything.
Service Areas Near Pomona
We work throughout Pomona and the surrounding communities, including Claremont, La Verne, San Dimas, Chino, and Diamond Bar. If you’re just outside our main service area, give us a call and we’ll let you know if we can get a crew out. We also provide Pomona service area coverage across all the ZIP codes we serve, and we offer GAF service in Westminster and GAF service in Claremont for homeowners in those cities.
Book Your GAF Service in Pomona Today
If your GAF roof took a hit from the last Santa Ana or you’re seeing leaks after winter rain, don’t wait for the next storm to make it worse. Call (877) 755-4274 now to schedule a free estimate. We’ll send a crew to your Pomona home or to GAF in La Verne if you’re just outside city limits, inspect the roof properly, and give you an honest assessment with a written quote. Repair or replace, we’ll tell you what the roof actually needs.
Written by Gil Tanner, Owner at Weathervane Roof Repair, serving Pomona since day one.