Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
GAF Roofing in Topanga, CA | Hollywood Roofing Co
We provide independent GAF service across Topanga, from leak repair on Timberline shingles to full replacements with ember-resistant assemblies. What makes our GAF work different here is simple: we build every roof to survive the next Santa Ana wind event, not just look good from the street. Call (833) 589-7971 for a free estimate.
Hollywood Roofing Co installs and repairs GAF systems throughout the 90290 canyon, including GAF sales & service backed by real product knowledge, not a supplier’s talking points. We’re not manufacturer-affiliated or authorized, and we’re upfront about that. It means we recommend what works for your home.
Why Topanga Residents Choose Us for GAF Service
Roland Vega grew up in Los Feliz, close enough to the Hollywood Hills to know what a punishing Santa Ana wind can do to a roof that wasn’t installed right. He learned the trade at Los Angeles Trade-Technical College and has spent the better part of three decades working roofs across the GAF service in Santa Monica and the Santa Monica Mountains. When he talks about GAF seal-down failure on a south-facing Topanga slope, he’s not reading from a brochure.
We carry GAF underlayments, starter strips, and ridge caps on the truck because Topanga jobs don’t wait for a parts run up the canyon. We use OEM GAF components where the warranty depends on them, and we’ll switch to aftermarket flashing or ember-screened vents when they outperform what GAF ships standard. Seven leading brands. One honest recommendation.
Styles & brands we work with






Common GAF Roofing Problems We Solve in Topanga
- Timberline shingle seal-down failure. Topanga’s dry Santa Ana winds hit south- and west-facing slopes hard, lifting unsealed tabs before the adhesive strip has cured. We see this most on homes along Old Topanga Canyon Road where wind funnels through the canyon, and the fix is seal-down repair or selective shingle replacement before water gets to the decking.
- UV degradation of underlayment over wood shakes. Many Topanga cabins from the 1920s-1970s still have cedar shake roofs, and the intense canyon sun bakes GAF felt or synthetic underlayment until it cracks at penetrations. Leaks show up around pipe boots and chimneys first. We remove the failed underlayment and re-flash the penetration with GAF Liberty SBS.
- Ember intrusion at ridge and soffit gaps. A standard GAF ridge vent won’t stop embers in a Woolsey-type fire, and standard soffit screens clog with chaparral debris. Topanga’s wildland-urban interface rules push screened ridge vents and non-combustible bird stops, which most flatland crews never carry. We stock them.
- Valley and flashing failures on steep, complex pitches. Topanga’s custom canyon homes settle over decades, and GAF valley metal or step flashing pulls loose at the seams. Winter runoff erodes hillside footings and makes the problem worse. We re-flash valleys with fire-rated metal and re-seat the GAF shingle field around them.
- Decking rot from unvented ridges. Old Topanga cabins frequently have unvented ridge lines, and trapped heat rots the decking from below. When we tear off a GAF roof here, we replace the rotted decking at the ridge and add proper ventilation before new shingles go down.
GAF Service in Topanga: What Local Conditions Mean for Your Equipment
The single biggest Topanga factor that flatlands roofers miss is the building department’s ember-resistant vent requirement. A standard GAF Timberline install on a canyon home needs non-combustible bird stops at the eave and a screened ridge vent, because Topanga’s fire agencies enforce Class A assembly standards after the 1993 and 2018 Woolsey fires. Homes off Saddle Peak Road or in the upper reaches of the canyon sit in chaparral thick enough to carry fire from ridge to ridge, and the roof assembly is the first thing the ember storm hits. On a steep cedar-sided cabin off Old Topanga Canyon Road, our crew tore off a 30-year-old wood shake roof and installed a GAF Timberline HDZ system with Liberty SBS underlayment and ember-screened ridge vent. The original ridge was unvented and the fascia had charred from a past ember shower, so we replaced the decking at the ridge and added fire-rated flashing before the new shingles went down. A roof doesn’t ask for much – just that you pay attention before it has to ask loudly.
GAF Models & Products We Service in Topanga
We work on the full GAF residential lineup: Timberline HDZ architectural shingles, Timberline UHDZ premium shingles, Liberty SBS self-adhered underlayment, and EverGuard TPO/PVC for flat-roof additions many Topanga homes have tacked on over the years. We use GAF-manufactured underlayments, ridge caps, and starter strips to keep the system warranty intact. When aftermarket flashing or ember-screened vents outperform OEM for Topanga’s fire exposure, we’ll say so and use them. Parts are stocked locally for fast Topanga turnaround, so you’re not waiting on a distributor two canyons over.
See the difference
Before
After
Before
After
Before
AfterGAF Service Pricing in Topanga
GAF roof service in Topanga runs higher than flatlands pricing because of scaffold-and-access work on steep lots, not ladder jobs. Expect leak repair to start in the mid-hundreds, flashing and valley rework in the $1,200-$2,800 range, and a full GAF Timberline HDZ replacement anywhere from $18,000 to $45,000 depending on roof complexity, decking condition, and ember-assembly upgrades. Your free estimate includes a line-by-line scope, material options across GAF’s premium and mid-tier lines, and a written quote that won’t change once work starts. Call (833) 589-7971 for exact numbers on your Topanga roof.
Serving Topanga, CA — Our Local Coverage Area
We’re based in the Topanga area and also provide GAF service in Sherman Oaks, so we 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 Topanga
Does GAF make a Class A fire-rated roofing system for Topanga homes?
Yes. GAF Timberline HDZ and UHDZ shingles can be installed as part of a Class A roof assembly when paired with the right underlayment and ember-resistant venting. Topanga’s enforcement means we build to Class A by default here, using GAF Liberty SBS underlayment and screened ridge vents that meet the canyon’s fire codes. Call (833) 589-7971 for a free estimate on a GAF Class A system.
Can you repair GAF Timberline shingles that have lost their seal in Santa Ana winds?
Yes. We re-seal unsealed tabs on GAF Timberline shingles using the manufacturer’s seal-down method, and we replace shingles that have torn or blown off entirely. On Topanga’s west-facing slopes, we’ll often add seal-down reinforcement because the next Santa Ana is coming. Call (833) 589-7971 to have our crew assess your shingle field.
What underlayment does GAF recommend for a steep canyon roof with winter runoff?
GAF Liberty SBS self-adhered underlayment is what we spec on steep Topanga roofs where winter runoff channels through valleys and over eaves. It’s a peel-and-stick membrane that seals around fasteners and holds through the wet months. We stock it locally for fast Topanga jobs. Call (833) 589-7971 to schedule your free estimate.
How do you handle GAF warranty on a steep, scaffold-only Topanga roof?
We install GAF components per the manufacturer’s installation specs so the system warranty stays intact, and we document every layer of the assembly before shingles go down. Steep scaffold-only lots don’t void a GAF warranty; sloppy installation does. We take photos at every stage and keep records on file. Call (833) 589-7971 to talk through your roof’s warranty status.
Do GAF shingles hold up better than wood shakes in Topanga’s sun?
Yes, significantly. Wood shakes crack and dry out under Topanga’s intense sun, and they’re an ember liability in the canyon. GAF Timberline HDZ architectural shingles are UV-stable, Class A fire-rated when properly assembled, and they don’t split after a decade of dry seasons. Call (833) 589-7971 for a free estimate.
Service Areas Near Topanga
Beyond Topanga, our GAF roofing crews cover Topanga service area and the surrounding canyons and hillside communities. We also provide GAF service in East Rancho Dominguez and GAF service in Sierra Madre, along with Universal City, Silver Lake, Echo Park, Beverly Hills, Glendale, and Studio City.
Book Your GAF Service in Topanga Today
Call (833) 589-7971 to schedule your free GAF in Encino and Topanga roofing estimate. Roland and our crew will walk your roof, explain what’s holding up and what’s not, and give you a written quote you can act on at your own pace.
Written by Roland Vega, Owner at Hollywood Roofing Co, serving Topanga, Northridge GAF service, and the Santa Monica Mountains since 1994.