Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roofing Company Across Tarzana
Finding a roofing company in Tarzana that you can trust at your door is harder than it should be. We get it. Our technicians arrive in clean, marked uniforms with a photo ID badge, and you’ll see their name and photo before they ring the bell. Call (743) 200-8347 for a free estimate, and you’ll get a written price before any work starts, not after. Tarzana’s heat and hillside fire codes make roofing here different from Reseda or Van Nuys, and we plan for that on every job.
Why Mercer Roofing Is Tarzana’s Preferred Roofing Company
Tarzana homeowners deal with roof problems most flatland Valley homes don’t face. The hills south of Ventura Boulevard sit in a Very High Fire Hazard Severity Zone, which changes what materials you’re allowed to install. The valley floor’s post-war ranch homes bake under roof-surface temperatures that top 170°F in summer. We know both zones because we work in both every week, from the 91356 hillside homes off Avenida Del Sol to the 1950s tract streets north of the Boulevard.
Every technician we send is background-checked and identity-verified under the Threshold Verified standard. That’s not marketing language. It means the person at your door is exactly who we said they’d be, with a badge you can check. Our crews serve Tarzana locally, with scheduling coordinated from our Los Angeles office. When you call, a real person answers, 24/7. Not a voicemail. Not a callback form. Call (743) 200-8347 and you’ll speak to someone who can help.
We founded Mercer Roofing in 2000, and we’ve been part of the Threshold Group family of home-service companies since. The 365-Day Done Right Promise applies to every job we do in Tarzana: if the work isn’t right within a year, we make it right. Written guarantee included with every repair. Free second visit if a repair fails. Those are the terms in writing, before the first nail.
Metal Roof Installation in Tarzana
Metal Roof Installation in Tarzana runs $18 to $35 per square foot for standing seam systems, and it’s becoming a serious option for hillside homeowners who want a roof that won’t granule-strip under 170°F surface heat. A well-installed metal roof reflects radiant heat better than asphalt and doesn’t degrade the way composition shingles do after ten summers in the western Valley. It also carries Class A fire ratings when installed with the right underlayment assembly, which matters if your home sits south of Ventura Boulevard in the VHFHSZ.
Standing Seam vs. Exposed Fastener
Standing seam costs more but hides every fastener under the seam cap, which matters when Santa Ana winds rip through the Ventura Boulevard corridor in fall. Exposed fastener panels are cheaper, but every screw is a potential leak point after enough thermal expansion cycles. For Tarzana’s hillside homes with steeper pitches, we usually spec standing seam. For flat or low-pitch valley ranch homes, exposed fastener can work if the fasteners are seated and sealed correctly.
When Metal Is the Right Call
Metal makes the most sense when you’re replacing a roof you plan to keep for 30-plus years and don’t want to re-roof every 12 to 15 years. It’s also the right call for homeowners who want the lowest maintenance option under Tarzana’s heat load. The tradeoff is lead time. Quality metal panels are made to order, not stocked, so expect three to six weeks. We fix your price in writing before we order anything, which means the quote you approve is the price you pay, even if material costs move between order and install.
Residential Roofing in Tarzana
Residential Roofing in Tarzana covers everything from a targeted repair on a 1960s ranch house off Reseda Boulevard to a complete re-roof on a custom hillside home with complex geometry. Most Tarzana homes on the valley floor were built between 1950 and 1975 with low-pitched roofs, and many still carry the original three-tab shingles or wood shake that’s now decades past its service life. A full shingle replacement on those homes typically runs $9,500 to $17,000, depending on square footage, pitch, and how much decking needs to be replaced once we pull the old material off.
Hillside Homes South of Ventura
The houses south of Ventura Boulevard are different animals. Steeper pitches, tile and concrete tile systems, dormers, valleys, and decades of thermal cycling under Tarzana’s heat. When we inspect those roofs, we’re looking at the underlayment as much as what’s on top. Tile can look fine from the street while the underlayment underneath has dried and cracked into something that leaks the first time Santa Ana wind drives rain sideways under the tile.
What Replacement Actually Includes
A Mercer re-roof always includes a written line-item price before we start. You’ll see exactly what we’re pulling off, what we’re putting on, what the underlayment is, what the flashing spec is, and what the nail schedule is. That last one matters in Tarzana. Standard nailing patterns fail during high-wind events. We seal starter strips and nail ridge caps to a high-wind schedule as standard, not as an upsell, because we’ve seen what October Santa Ana winds do to improperly fastened roof edges on hillside homes.
Trusted Brands We Service in Tarzana
We install and repair roofing systems using manufacturer-recognized shingle brands including GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Tarzana’s hillside VHFHSZ work, we lean on GAF Timberline and CertainTeed systems that have fire-rated assembly testing behind them. For tile replacement, Boral and Tamko products hold up well under the Valley’s heat cycling. We keep common replacement parts and matching shingle stock available for fast turnaround on repairs across the 91356, and we can order specialty material the same day your estimate is approved, with lead times spelled out in writing.
Common Roofing Company Problems We See in Tarzana Homes
- Permit rejections on hillside re-roofs. The LA Department of Building and Safety frequently flags VHFHSZ permits when a contractor specs a Class A shingle without the Class A assembly to go with it. This causes delays and mid-job material swaps. We spec the full assembly from day one, because we’ve done it enough times to know what passes.
- Underlayment baked to death. Tarzana summers push roof-surface temperatures past 170°F. Standard underlayment dries, cracks, and delaminates under that load. We use high-temp underlayment, and in the eaves and valleys of hillside homes we install high-temp ice and water shield, even though Tarzana doesn’t get snow. Heat is the enemy here, not ice.
- Granule loss on aging asphalt shingles. The Valley’s radiant heat strips granules from shingles years faster than manufacturer warranties assume. If you’re seeing granules in your gutters on a roof that’s only eight or ten years old, that roof is aging faster than it should. We’ll tell you honestly whether repair buys you time or whether replacement is the only real fix.
- Wind-lifted ridge caps and flashing. Santa Ana winds funnel through the Ventura Boulevard corridor and hit hillside roofs hard. Lifted ridge caps let water in and void manufacturer warranties. We re-nail and seal ridge caps to a high-wind schedule on every repair and replacement we do, because a warranty only works if the installation meets wind specs.
Pricing for Roofing Company in Tarzana, CA
Here are straight numbers for the Tarzana market. A targeted roof repair, like replacing cracked tiles or re-sealing flashing, runs $450 to $1,900 depending on access and material. A full asphalt shingle replacement on a typical 1,800-square-foot ranch home runs $9,500 to $17,000. Tile roof repair, common on hillside homes, runs $650 to $2,800. Metal roofing installation runs $18 to $35 per square foot. What moves the price on your job: roof pitch, number of stories, decking condition, whether we’re in the VHFHSZ (which requires the fire-rated assembly), and how long the lead time is on your material. Every estimate is free, and the price is fixed in writing before we order anything. Call (743) 200-8347 to schedule yours.
We Also Serve Cities Near Tarzana
Our crews serve Tarzana and the surrounding west Valley every week, including Encino, Reseda, Woodland Hills, and Canoga Park. If you’re in one of those neighborhoods and need a roofing company that sends a photo ID at the door and puts every price in writing, call (743) 200-8347. We’ll schedule the same free estimate we offer in Tarzana.
Serving Tarzana, CA - Our Local Coverage Area
We’re based in the Tarzana 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 Tarzana
Tarzana’s hillside areas south of Ventura Boulevard fall inside the City of Los Angeles’s Very High Fire Hazard Severity Zone. The LA Department of Building and Safety frequently rejects re-roofing permit applications that specify a Class A shingle without a compliant Class A assembly, meaning the shingle plus underlayment tested together as a fire-rated system. Contractors who don’t know the VHFHSZ rules submit a shingle-only spec, get the permit kicked back, and the homeowner waits weeks while the material order changes. We write the entire assembly into our proposal from the start, which is what keeps your permit moving. Call (743) 200-8347 and we’ll tell you exactly what your address requires.
Tarzana regularly runs 15 to 20 degrees hotter than coastal LA in summer, and roof-surface temperatures exceed 170°F. That heat granule-strips asphalt shingles and dries out underlayment years faster than manufacturer warranties assume. A roof that would last 25 years in Santa Monica might last 15 in Tarzana. The fix is choosing materials rated for high-temp exposure and making sure the underlayment is high-temp rated, not the cheapest felt on the truck. Ask about the specific underlayment spec when you get your quote. We include it in writing on every estimate, because in Tarzana it’s the part that fails first.
Three things: a written price fixed before work starts, a line item for the underlayment spec, and a line item for the nail schedule. If a quote doesn’t name the underlayment product, you’re probably getting the cheapest option, which will crack under Tarzana’s heat. If it doesn’t specify a high-wind nail schedule, your ridge caps may not survive the next Santa Ana wind event. And if the price isn’t fixed in writing before material is ordered, you’re exposed to cost changes mid-job. Every Mercer estimate includes all three. Written. Before you approve anything. Call (743) 200-8347 for an exact quote on your home.
Yes, and for many Tarzana homes it’s worth it, especially hillside homes in the VHFHSZ where metal’s Class A fire rating simplifies code compliance. Standing seam metal runs $18 to $35 per square foot, more than asphalt upfront, but it reflects heat better and doesn’t granule-strip under 170°F surface temperatures. It also handles Santa Ana winds well when fastened correctly. The honest tradeoff is lead time: quality metal panels are made to order, so plan for three to six weeks. We fix your price before ordering, so the quote you approve is the price you pay even if material costs move. We recently completed a re-roof on Avenida Del Sol in the hills south of Ventura Boulevard, replacing a 20-year-old concrete tile system that had failed after years of thermal cycling. The original underlayment had degraded, so we installed a high-temp ice and water shield at the eaves and valleys, then used a Class A assembly with GAF Timberline shingles and a fire-rated underlayment to meet VHFHSZ code. That roof will outperform the original by decades.
We fix your price in writing before we order anything, and we tell you the lead time in the same document. For specialty materials like standing seam metal, certain tile profiles, or fire-rated underlayment assemblies, lead times run three to six weeks depending on the manufacturer. Your quote includes the expected delivery window alongside the fixed price, so you know the schedule before the job starts, not after. If a manufacturer pushes a date, you hear it from us the same day. Call (743) 200-8347 and we’ll give you straight answers on what’s in stock and what has to be made to order for your Tarzana roof.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Tarzana since 2000.