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 Canoga Park
Roofing work in Canoga Park comes down to one reality: the Valley heat is merciless on shingles, and the older ranch homes here need a roofer who understands what that does to a roof over 20 or 30 summers. We’re Mercer Roofing Co Woodland Hills, and our crews work throughout Canoga Park every week, handling everything from full re-roofs on 1950s ranches to flat-roof repairs over back additions and detached ADUs. A typical roof repair in Canoga Park runs $450 – $1,200, while a full shingle re-roof on a standard ranch usually lands between $9,500 and $16,500 depending on size and decking condition. Call (341) 217-2677 and you’ll get a live person, not a voicemail, and we’ll send you a written price before any work starts.
Why Mercer Roofing Co Woodland Hills Is Canoga Park’s Preferred Roofing Company Company
We’ve worked on enough Canoga Park roofs to know the houses here don’t all behave the same way. A 1954 ranch off Topanga Canyon Boulevard with an original low-slope addition needs a different approach than a 1970s apartment complex on Roscoe. Our Roofing Company team has handled both, and homeowners here have come to expect something most roofers don’t offer: we send you the technician’s name and photo before they arrive, and they badge in at the door with photo ID. Grant Whitlock, who leads our team, made that a Threshold Standard from day one, and we hold to it on every job in every neighborhood, from Warner Center-adjacent streets to the older blocks south of Sherman Way.
That standard matters in Canoga Park, where a lot of our customers are home alone during the day, or have young kids, or are older homeowners who want to know exactly who’s stepping onto their property. We’re part of the Threshold Group family, founded in 2000, and every independently owned location under that umbrella is contractually held to the same vetting: background-checked, identity-verified, uniformed technicians. You’ll know the name on the badge before the knock at the door.
Styles & brands we work with
Free Roof Estimate in Canoga Park
We offer a Free Roof Estimate to every Canoga Park homeowner, and it’s exactly what it sounds like: we come out, get on the roof, measure, inspect the decking and flashing, and hand you a written line-item price before you commit to anything. On the older ranch homes common around Canoga Park High School and the numbered streets south of Vanowen, a re-roof estimate almost always involves checking what’s underneath the shingles. Decking on homes this age is often 1/2-inch plywood or even board sheathing, and if it’s rotted or spongy, that’s a line item we want you to see on paper before we start, not after.
Here’s what the free estimate includes for a Canoga Park home: roof square footage measured by hand, condition of existing shingles or tile, underlayment and flashing review, gutter and drainage check, and a scoped-out list of what we found on the roof. You don’t pay for any of it. If you decide not to use us, you keep the written estimate. If you do move forward, that same written price is what the invoice matches, unless we both agree in writing to a change before the work happens.
What We Look For on Older Ranch Additions
Canoga Park’s mid-century ranches were often expanded over the decades, and those additions are where we see the most avoidable damage. A flat-roof section over a converted garage or back bedroom needs a different assembly than the shingle roof on the main house. We’ll check the transition flashing where the flat section meets the pitched roof, and we’ll note whether that low-slope area was ever done with the right membrane. On a re-roof off Saticoy Street, we pulled back a failed transition on a 1950s ranch, replaced rotted sheathing, laid ice and water shield along the valley, and tied new GAF architectural shingles into the original main roof with a custom metal drip edge. The client’s detached ADU stayed dry and the inspector signed off on the first visit.
Detached Structures and ADUs
If you have a detached garage, workshop, or ADU on your Canoga Park lot, we scope it in the same visit as the main house. A lot of roofers quote only the primary structure and never mention the outbuilding, which leaves you with two roofs aging at different rates and two separate repair bills down the road. We add every structure with a roof to the written estimate, with its own line item and its own warranty coverage. That way you’re not choosing which building to protect.
Roofing Contractor in Canoga Park
The right Roofing Contractor in Canoga Park knows that the city sits inside Los Angeles but builds like the Valley: big lots, ranch footprints, and a lot of accessory structures. We’re that contractor, and we approach every job by looking at the whole parcel, not just the shingles. That means checking county permit records when there’s a question about whether an older garage or addition was permitted as livable space, because that changes the roofing assembly the inspector will approve. It means scoping drainage and grading on open lots where water pools against the foundation after a re-roof changes the runoff pattern.
Our crews handle the full scope of roofing work across Canoga Park: shingle re-roofs, tile repair, flat-roof replacement with modified bitumen or membrane systems, metal roofing, and structural repairs to decking and fascia. Every job starts with a written price and every repair carries a written 365-Day Done Right Promise: if it’s not right within a year, we make it right, no charge. That’s not a verbal promise. It’s printed on the estimate and on the invoice.
Mixed-Slope Transitions on Ranch Additions
One of the more technical parts of roofing in Canoga Park is the point where a pitched shingle roof meets a flat or low-slope addition. Get that transition wrong and the first heavy winter rain finds its way into the house. We build those transitions with proper flashing, ice and water shield, and the right membrane on the low-slope side. It costs more upfront than slapping shingles over the whole thing, but it’s the difference between a roof that lasts and a roof that leaks by spring.
Flat Roof and Low-Slope Sections
Canoga Park has a lot of flat and low-slope roof area, particularly over back additions, carports, and converted garages. Standard shingles aren’t rated for low-slope applications, and putting them there is a common mistake we get called to fix. For those sections we use membrane systems or modified bitumen, which handle the standing heat and direct UV that Canoga Park gets from June through October. A flat-roof replacement over a typical back addition runs $4,200 – $7,800 depending on square footage and decking condition.
Trusted Brands We Service in Canoga Park
We install and repair shingle roofs using manufacturer-recognized brands including GAF, CertainTeed, Owens Corning, and Tamko, and we keep common parts for these systems in local supply for Canoga Park customers, which shortens turnaround when you need a repair fast. If your home already has Atlas or Boral tile, we service those as well, including broken tile replacement and underlayment repair. The brand on your roof matters less to us than whether it was installed to spec, and when it wasn’t, we fix that too. You’ll see the exact brand and product line on your written estimate, so there’s no mystery about what’s going on your roof.
Common Roofing Company Problems We See in Canoga Park Homes
- UV-baked shingle brittleness. The relentless San Fernando Valley sun breaks down the asphalt binders in shingles here faster than in coastal parts of LA, and we routinely see granule loss and cracking on roofs that should have lasted another decade.
- Flat-roof failures over additions. Many mid-century ranches in Canoga Park were expanded with low-slope or flat sections, and when those were done with shingles instead of a proper membrane, they leak within a few seasons.
- Attic heat damaging shingles from below. Older Canoga Park ranch homes often have minimal insulation, and the attic heat buildup in summer can be so intense that shingles soften and tear during re-roof work, which is why we schedule tear-offs carefully in peak heat.
- Detached structures skipped in the quote. We see this constantly: a homeowner gets a re-roof on the main house and the detached garage or ADU was never in the scope, leaving mismatched warranties and an aging roof that still needs to be done.
See the difference
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AfterPricing for Roofing Company in Canoga Park, CA
Here’s what you can expect to pay in Canoga Park for common roofing work. Roof repair, depending on what we find: $450 – $1,200. Full asphalt shingle re-roof on a standard 1,200 – 1,600 sq ft ranch: $9,500 – $16,500. Flat-roof or low-slope section replacement: $4,200 – $7,800. Tile roof repair or partial replacement: $850 – $3,200. Decking replacement where rot is present: $3.50 – $5.00 per square foot added to the job. What moves the price on a Canoga Park home is usually the age of the decking and the condition of the flat sections. We put every line item in writing before any work begins, and the price doesn’t change unless you approve a written change order first. Call (341) 217-2677 to schedule your free estimate.
We Also Serve Cities Near Canoga Park
Our crews cover the neighborhoods around Canoga Park regularly, including Winnetka, West Hills, Woodland Hills, and Reseda. If you’re in any of those areas, you get the same written pricing, the same photo-ID technician standard, and the same 365-Day Done Right Promise. Learn more about what a Roofing Company from our team brings to your home, or see how we serve Canoga Park specifically on this page.
Serving Canoga Park, CA - Our Local Coverage Area
We’re based in the Canoga Park 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 Canoga Park
In most cases, yes, if the ADU is a livable structure with its own roofing assembly, and you should expect the inspector to review the underlayment, nailing pattern, and flashing details before sign-off. This is where our crews do the homework first: we pull county records to see how the structure was originally permitted, because some older Canoga Park garages were listed as storage and later converted to living space, which changes what the inspector will approve on the roof. We handle that paperwork as part of the job. Call (341) 217-2677 and we’ll tell you what your specific property needs.
It accelerates UV degradation, which breaks down the asphalt binders that hold the shingle together, leading to brittleness, cracking, and granule loss years earlier than in milder climates. On a Canoga Park roof, that often means a 30-year shingle realistically runs 20 – 22 years before it needs real attention. The fix is twofold: choose a shingle with strong UV resistance, and make sure the attic ventilation is actually working, because roof-level heat plus attic-level heat bakes shingles from both sides. We check ventilation on every estimate.
Yes, and this is one of the most common jobs we do in Canoga Park. We’ll remove the old flat-roof material, inspect and replace decking as needed, install a proper membrane or modified bitumen system, and rebuild the transition flashing where the flat section ties into the main shingle roof. The main roof stays untouched. You get a written price for just that section, typically $4,200 – $7,800 depending on size, and a 365-Day Done Right Promise on the work. Call (341) 217-2677 for an exact figure.
We replace it, and you’ll see it as a separate line item on the written estimate before we start, priced at $3.50 – $5.00 per square foot. On Canoga Park homes built in the 1940s through 1960s, the decking is often original 1/2-inch plywood or board sheathing, and decades of Valley heat plus occasional leaks means some of it will need to go. We don’t hide that in a vague “materials” line. You’ll know exactly how much decking we’re replacing and what it costs before the first shingle comes off.
Yes. When we re-roof a home on a larger Canoga Park lot, we look at where the new roof will send water, and if the existing grading pools runoff against the foundation or toward a detached structure, we flag it and can regrade as part of the job. This is the kind of thing a generic Los Angeles roofer page won’t tell you, because it’s specific to the acreage-style lots you find more often here than in Woodland Hills or Reseda. It’s also a big reason we scope the whole parcel, not just the shingle surface. Call (341) 217-2677 to have us walk your lot and tell you what you’re actually looking at.
Call Mercer Roofing Co Woodland Hills for Your Canoga Park Roof
If you’re in Canoga Park and you’re ready for a roof that’s done right, with a written price in your hand before any work starts and a technician whose name and photo you’ll know before they arrive, call (341) 217-2677. We’ll schedule your free estimate, walk the roof with you, and put everything in writing. No pressure, no vagueness, no stranger at the door you don’t recognize. That’s the way roofing should work.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Canoga Park and the surrounding San Fernando Valley since founding in 2000.