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
Fast, Reliable Roofing Company Across Topanga
Mercer Roofing Co Woodland Hills brings a Roofing Company team that knows Topanga’s canyons, wind patterns, and fire code better than any crew driving over from the Valley. When your roof leaks after a Santa Ana blow or you need a full replacement that passes the Wildland-Urban Interface inspection, we arrive with a written price in hand and a technician whose name and photo you already have. Call (341) 217-2677 any hour, any day. A real person picks up.
Topanga’s housing stock runs from 1920s cabins tucked under oaks to 1970s hillside contemporaries to modern canyon retreats, and no two roofs here fail the same way. We’ve worked on Saddle Peak, Old Topanga Canyon Road, and up through Fernwood, and what we’ve learned comes down to this: the roof that looks fine from the street is often hiding the problem that fails during the first heavy rain. That’s why every visit starts with a real inspection, not a clipboard checklist.
Why Mercer Roofing Co Woodland Hills Is Topanga’s Preferred Roofing Company Company
Homeowners in Topanga call us for the same reasons they recommend us to neighbors. We send a photo and name of your technician before the visit. That technician arrives in a marked uniform, presents a photo ID badge at the door, and only then walks the roof. The vetting process behind that ID is called the Threshold Standard: every crew member is background-checked, identity-verified, and held to a written quality framework that each independently owned and operated location under the Threshold Group banner is contractually bound to.
We’re part of the Threshold Group family, founded in 2000. But this location is independently owned and operated, led by Grant Whitlock, and our crews work locally in Topanga week in and week out. Dispatch and scheduling are coordinated from our Los Angeles office, with crews serving Topanga directly. The result is a roofing team that shows up on time, knows the roads, and doesn’t treat your house like a job number.
Every repair includes the 365-Day Done Right Promise, in writing. If something isn’t right within a year, we come back and make it right, no argument. That guarantee is part of the written price you approve before a single nail gets driven.
Styles & brands we work with
Commercial Roofing in Topanga
Commercial Roofing in Topanga means low-slope or flat systems on canyon studios, hillside offices, and the occasional mixed-use building along Topanga Canyon Boulevard, where the fire marshal’s checklist and the structural engineer’s specs meet on the same roof. A typical commercial flat roof replacement in Topanga runs $9 – $16 per square foot installed, depending on whether we’re re-covering over an existing membrane or doing a full tear-off down to the decking. Repairs and patching usually fall in the $700 – $2,400 range per visit.
Torch-Down and TPO for Canyon Buildings
Many Topanga commercial buildings were torch-downed decades ago, and we still service that system when the substrate is sound. For newer builds and energy-conscious owners, TPO membrane offers a reflective surface that drops roof temperatures during summer heat waves. Both require proper edge detailing to hold up when Santa Ana winds gust past 50 mph.
When a Building Needs a Roof Before It Fails
If you’re seeing blisters, ponding water after rain, or splits at the seams, it’s time to get eyes on the membrane. Embers from a canyon fire don’t need a large gap to find their way into old roofing felt. A roof that’s past year 18 on its original membrane is a liability in Topanga’s WUI zones, and the inspection can be the difference between a repair and a full replacement.
Metal Roof Installation in Topanga
Metal Roof Installation in Topanga has become the first choice for homeowners who are tired of replacing asphalt shingles every 15 years while chaparral fires burn within sight of their ridge line. A standing-seam metal roof on a Topanga home typically runs $18 – $32 per square foot installed, with the higher end reflecting steeper slopes, crane work, and tear-off of the old roof down to the deck. Stone-coated steel products like Boral and certain IKO profiles fall in that same range and offer the fire rating plus a more traditional look.
Standing Seam and Stone-Coated Steel
Standing seam gives you the cleanest profile and the best wind performance, which matters when the gusts off the Pacific hit the coastal-facing ridges. Stone-coated steel offers Class A fire performance with a shake or shingle profile that fits the older cabin aesthetic on lots throughout Fernwood and the Post Office tract.
Framing Realities on Steep Canyon Lots
Before we quote a metal roof in Topanga, we check the framing. On a 1960s hillside contemporary we opened up off Saddle Peak Road, our crew found undersized 2×4 rafters and failed torch-down underlayment that had been letting embers collect against the fascia. We sistered the framing, installed full GAF deck armor underlayment with ice and water shield at the valleys, and added ember-resistant ridge vents before re-sheathing with a Class A architectural shingle. The final permit sign-off added two days, but no change orders were issued because the allowance was written in at contract.
Trusted Brands We Service in Topanga
We install and repair using manufacturer-recognized shingle brands including GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Topanga homeowners, we stock the local favorites: Atlas and Tamko architectural shingles for standard pitched roofs, plus Boral stone-coated steel and IKO profiles when the fire rating and longevity need to be uncompromising. That means when a repair comes through, we’re not waiting a week on a distributor in the Valley. Parts arrive with the crew, and the job gets done.
See the difference
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AfterCommon Roofing Company Problems We See in Topanga Homes
- Overhanging oaks and sycamores compromising the Class A rating. Topanga’s roofing code requires Class A fire-rated assemblies with spark arrestors and ember-resistant vents. Even a small overhanging oak branch that touches the roof violates the WUI inspection and voids many manufacturer warranties, a rule that doesn’t apply in coastal Santa Monica or flatland Woodland Hills.
- Wind-uplift failures at ridges and eaves. When Santa Ana winds gust over 50 mph, any underlayment that was stapled instead of nailed will lift. We see architectural shingles peeled back at the ridge line on homes that were re-roofed during a calm week by crews who didn’t know the canyon wind patterns.
- Crumbling torch-down on 1960s and 1970s hillside homes. The original roof systems on many of those contemporaries were torch-down applied over minimal decking. The heat and dry air eventually crack the membrane, and embers find the gaps.
- Missing or improperly flashed valleys on steep slopes. Topanga’s steep lots mean rainwater funnels hard and fast into valley metal. When the flashing is undersized or the old flashing crumbles during tear-off, the leak shows up inside before it shows up on the roof.
Pricing for Roofing Company in Topanga, CA
A full architectural shingle re-roof on a Topanga home typically runs $7.50 – $11.50 per square foot installed, with the final number moving on slope, access, and the condition of the decking underneath. Roof repairs in Topanga most often fall between $450 and $1,900 depending on what’s failed, a cracked tile at one end, a section of rotted decking at the other. A roof inspection runs $275, and it’s credited toward your repair or replacement if you move forward with us. The written price we give you before work starts is the price you pay, unless we uncover something genuinely unexpected, in which case you approve the change in writing before we touch it. Call (341) 217-2677 to schedule a free estimate.
We Also Serve Cities Near Topanga
Our crews work throughout the surrounding canyons and valleys. In addition to our Roofing Company work in Topanga, we serve homeowners in Woodland Hills, Calabasas, Tarzana, and Encino. If you’re on the edge of any of those neighborhoods, call (341) 217-2677 and we’ll confirm whether your address falls within our service map. For more about our work specifically in the canyon, see Roofing Company in Topanga.
Serving Topanga, CA - Our Local Coverage Area
We’re based in the Topanga 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 About Roofing Company in Topanga
Yes, in most cases it does. When you pull a permit for a remodel in Topanga’s WUI zone, the inspector reviews the entire structure for fire-code compliance, and that includes the roof assembly. If your existing roof doesn’t have Class A materials, spark arrestors, or ember-resistant vents, the remodel permit may trigger a requirement to bring the roof up to code. Call (341) 217-2677 and we’ll tell you what your specific address is likely to face before you sign the remodel contract.
Because an overhanging branch touching the roof is a fire-code violation that voids Class A manufacturer warranties and fails WUI inspections. In Topanga, our crews keep pruning shears on the truck and trim back overhanging oaks and sycamores as a standard part of the job. It’s a fire safety requirement, not an optional extra.
Santa Ana winds over 50 mph can create uplift that peels back shingles if the underlayment wasn’t fastened with nails, or if the starter strip and drip edge were skipped on the original quote. We install with wind-rated fastening patterns and include starter strip and drip edge in the written scope, never as an upcharge after tear-off.
Sometimes, but not always. On the steepest lots off Saddle Peak and the upper reaches of Fernwood, a crane is the safest way to move panels and tear-off debris. On moderately sloped lots, our crew can carry panels by hand. We’ll tell you which applies to your address before the contract is signed, and the crane cost, if needed, is written into the allowance.
Yes, and in Topanga they’re not optional accessories. Embers collect in gutters full of dry leaf litter and in open vents, and that’s how roofs ignite during wildfire. Gutter guards and spark arrestors meaningfully reduce that risk, and they’re required under current WUI inspection standards on most Topanga lots.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Topanga and the surrounding canyons.