Architectural shingles
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Sherman Oaks
Roof replacement in Sherman Oaks typically runs $14,000 to $28,000 for a standard two-story home, depending on square footage, pitch, and the condition of the existing deck. If you’re dealing with a hillside property south of Ventura Boulevard, plan for engineering and drainage work that can push the number higher – often $32,000 to $45,000 on complex lots. We work throughout Sherman Oaks from the 91403 hills to the flats down to 91423, and we scope every job before we quote, so the number we give you is the number you pay. Call (833) 467-4901 for a free on-site estimate – Neil Stratton leads our inspection team and will walk your roof with you, not just glance from the gutter.
Sherman Oaks roofs carry a specific set of problems. The 1950s and 60s ranch homes that make up so much of this neighborhood were built with skip sheathing and low-slope or shallow-pitch designs that were never engineered for a century of Santa Ana winds and 100-degree summers. Then the 1994 Northridge earthquake came through, and a lot of roofs got patched with plywood over the original boards. You now have two different roof systems stacked on top of each other, expanding and contracting at different rates. That’s the real story behind most Sherman Oaks reroofs, and it’s why we inspect first and recommend second – you need to know what’s under the shingles before you spend a dollar on new ones.
We’re not a salesman with a ladder. We’re a full-cycle Roof Replacement contractor that carries seven manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – so the product recommendation follows what your roof actually needs, not what we happen to have in stock. That matters in Sherman Oaks, where heat-rated underlayment and wind-rated shingles are not optional upgrades. They’re the difference between a roof that lasts twenty years and one that starts leaking at the first hard rain.
Key Takeaways:
- Sherman Oaks roof replacement typically costs $14,000-$45,000 depending on lot type and roof condition
- Hillside homes south of the Boulevard often require engineering, wind-rated materials, and drainage plans
- Post-Northridge patchwork sheathing is common and changes how we scope the deck work
- We carry seven brands so materials match the roof and budget – not inventory limits
- Free on-site inspection and written line-item quote. No change orders. Call (833) 467-4901.
Why Huntington Beach Roofers Is Sherman Oaks’s Preferred Roof Replacement Company
We get called out to Sherman Oaks for the same three reasons, year after year. The first is a leak. The second is a roof that’s hit the 20-year mark and the homeowner wants to know if it’s repair or replace. The third is a home sale or pre-listing inspection where the buyer’s inspector flagged something. In every case, the conversation starts with an inspection – a real one, not a five-minute walkaround. We get on the roof, we document what’s there, and we tell you honestly whether you need a $900 repair or a $22,000 reroof. Most roofing companies won’t do that because the incentive is always to push the big ticket. Our business is built the other way around. We inspect first, recommend second. Neil Stratton has built this company around that principle, and it’s why we get repeat calls from Sherman Oaks homeowners and property managers who need straight answers.
Sherman Oaks customers also appreciate that we don’t sub out the assessment. You talk to one contractor from the first inspection to the final shingle. The person who walks your roof is the person who scopes the job and the person who signs off on it at the end. No hand-offs between an inspector, a sales rep, and a crew you’ve never met. That matters when you’re spending $20,000 and you want to know who to call if something’s off.
And we stock what Sherman Oaks needs. High-temp underlayment, wind-rated fasteners, ridge venting, and materials from seven manufacturers. If Atlas is backordered on a certain color, we can pivot to GAF or Owens Corning without delaying your project. That’s the advantage of being brand-broad instead of brand-locked. Match the material to the roof, not the other way around.
Styles & brands we work with






Reroofing in Sherman Oaks
Reroofing in Sherman Oaks means stripping the existing roof system down to what’s actually there – which in this city is often 1960s skip sheathing with plywood patched over it after Northridge – and building the roof back with materials rated for the San Fernando Valley’s heat and wind. A standard reroof on a 1,800-square-foot ranch in the flats runs $14,000 to $20,000. The same square footage on a hillside south of Ventura Boulevard can run $26,000 to $38,000 once you factor in deck reinforcement, wind-rated shingles, and drainage. That’s not a markup. That’s the cost of doing it right in a seismic zone with wind-driven rain.
We don’t put new shingles over a failing deck. You’d be paying for aesthetics while the structure underneath keeps moving. On Sherman Oaks hillside lots, the north and west slopes take the brunt of Santa Ana-driven rain, and if the flashing at the valleys is compromised, a new layer of shingles won’t stop the leak. You need the deck inspected, the underlayment replaced with a high-temp product, and the roof-to-wall connections checked. That’s the reroof we do.
Deck and Sheathing Assessment
Before we quote a reroof, we pull shingles in three or four places to see what the deck actually looks like. In the 91403 hills, we regularly find skip sheathing with 1-inch gaps – original 60s construction – under a layer of plywood added after the earthquake. The two materials move at different rates in Sherman Oaks heat, and the gaps let air and moisture through. We document it, photograph it, and show you exactly what needs to be addressed before we put anything new on top.
Heat-Rated Underlayment and Ventilation
In Sherman Oaks, the underlayment matters as much as the shingle. Summers push roof surface temperatures past 160°F, and cheap felt fails in a few years. We install high-temp synthetic underlayment and we spec ridge vents on nearly every reroof because the thermal cycling in this valley shortens roof life faster than rain does. A vented roof runs cooler, and a cooler roof lasts longer. Simple physics.
Flat Roof Replacement in Sherman Oaks
Flat roof replacement in Sherman Oaks is a different job than reroofing a pitched roof, and we see it all the time on the detached garages, carports, and mid-century room additions that fill this neighborhood. A flat roof on a two-car garage in Sherman Oaks typically runs $6,500 to $11,000 depending on whether we’re doing a single-ply membrane, a modified bitumen system, or a full tear-off with new insulation and deck repair. Flat roofs on the main house – common on 1950s low-slope designs and many post-war ranch homes – run $12,000 to $20,000 depending on size and drainage requirements. Flat roofs don’t shed water like pitched roofs. They hold it, and in Sherman Oaks, they also hold heat. The combination means the membrane takes a beating, especially on south-facing exposures.
The failure point on a Sherman Oaks flat roof is almost never the membrane itself. It’s the flashing at the parapet walls, the scuppers, and the roof penetrations. After thirty or forty years of thermal cycling, the metal flashing lifts, the sealant cracks, and water gets in. By the time you see a ceiling stain, the deck underneath has been wet for months. We don’t patch over that. We open it up, assess the framing, replace the damaged deck sections, and re-flash properly. That’s the only way a flat roof actually stops leaking in this climate.
Garage and ADU Flat Roofs
Detached garages and backyard ADUs in Sherman Oaks have become a major part of our flat roof replacement work. The rooftop decks on newer ADUs, the low-slope roofs on 1950s garages, the covered patios – they’re all chronic leak points because they were built at minimum pitch with minimal flashing. We re-scope these roofs with proper drainage, heat-reflective membrane options, and code-compliant flashing. If you’re in 91413 or 91495 and your garage roof has been patched twice, it’s time to replace it. Third patch never holds.
Drainage and Low-Slope Systems
Flat roofs on Sherman Oaks hillside lots need more than a membrane. They need grading plans that move water away from the house, because a flat roof that holds water on the north slope is a roof that leaks steadily through every joint. We evaluate the deck slope, the scupper locations, and the surrounding grade before we spec the system. Sometimes the fix is a tapered insulation system. Sometimes it’s additional drains. Either way, we address the water path before we lay the membrane.
Trusted Brands We Service in Sherman Oaks
Seven brands. One contractor. We’re authorized to install roofing products from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means the material recommendation on your Sherman Oaks home follows the roof’s needs and your budget – not our inventory limits. If the heat and UV calls for a high-temp GAF system, we spec GAF. If the wind-rating on a hillside exposure calls for Atlas with enhanced fastening, we spec Atlas. We keep Sherman Oaks-appropriate materials in stock and ready, so a reroof in Encino doesn’t wait on a shipment from the manufacturer. That’s the difference between a contractor with one brand and a contractor with seven.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Sherman Oaks Homes
- Underlayment failure on low-slope roofs. The shingles look fine, but the underlayment underneath has been baked by 100-degree summers and UV exposure at the eaves. We find this constantly on 1950s ranch homes where the roof pitch is too shallow for shingle-only protection.
- Flashing and penetration leaks on north and west slopes. Santa Ana winds drive rain sideways in Sherman Oaks, especially on hillside streets south of Ventura Boulevard. The flashing at chimneys, vents, and valleys takes the hit, and once it lifts, water gets in. This is the most common leak source we see in 91403.
- Inadequate seismic reinforcement on pre-1994 homes. Homes built before Northridge often lack the roof-to-wall strapping that current codes require. During minor tremors or strong wind events, the roof can separate slightly at the walls, and water follows the gaps. We add the reinforcement when we replace the roof – it’s the right time to do it.
- Patchwork sheathing under newer plywood. The earthquake re-sheathing created a two-layer deck on thousands of Sherman Oaks homes. The layers expand at different rates in valley heat, opening gaps and weakening the nail base. We see this on nearly every hillside reroof, and it’s why deck replacement often has to be scoped into the job.
Pricing for Roof Replacement in Sherman Oaks, CA
Here are the numbers for Sherman Oaks, straight up. A standard asphalt shingle reroof on a 1,500-2,000-square-foot single-story home runs $12,000 to $18,000. A two-story or larger home runs $18,000 to $28,000. Architectural shingles add $2,500 to $5,000. A full deck replacement adds $4,000 to $8,000 depending on how many layers of old sheathing we’re removing. Hillside lots with engineering and drainage requirements run $30,000 to $45,000 and up depending on access and structural work. Flat roofs run $6,500 to $20,000 as covered above. Every quote is line-itemed, written, and fixed. No change orders unless you add scope. Call (833) 467-4901 and Neil or one of our inspectors will come out, walk the roof, and give you a real number based on what’s actually there.
We Also Serve Cities Near Sherman Oaks
Our crews work throughout the San Fernando Valley and surrounding areas, including Valley Glen, Van Nuys, Studio City, and Encino. If you’re just over the border from Sherman Oaks, same service, same pricing structure, same inspection-first process. For more on our service area and approach, see Roof Replacement in Sherman Oaks and reach us at (833) 467-4901.
Serving Sherman Oaks, CA — Our Local Coverage Area
We’re based in the Sherman Oaks 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 Roof Replacement in Sherman Oaks
Patchwork sheathing adds $4,000 to $8,000 to a typical Sherman Oaks reroof because we often need to remove both the newer plywood layer and the original 1960s skip sheathing underneath, then install a single, code-compliant deck. The exact cost depends on how much of the deck is compromised and whether the framing underneath needs reinforcement. On hillside homes south of the Boulevard, we frequently find this condition on north and west slopes where wind-driven rain has already caused water damage. Call (833) 467-4901 for an inspection and we’ll show you exactly what’s under your shingles before quoting.
Yes. Sherman Oaks is in Los Angeles County, and roof replacement requires county permits, including re-roofing permits, and on hillside lots, grading and drainage plan approval. We pull the permits, schedule the inspections, and handle the paperwork from start to finish. If your hillside property needs engineering for wind or seismic reinforcement, we bring in a structural engineer and include those drawings in the permit package. The permit cost is included in your line-item quote, not added on later.
For most Sherman Oaks homes, a high-temp architectural asphalt shingle with a synthetic underlayment is the right balance of cost, wind resistance, and UV durability. We spec shingles rated for 130+ mph wind on hillside exposures and high-temp underlayment that won’t break down under 160°F surface heat. If you want tile or metal, we can install those as well – we carry product lines across seven manufacturers including GAF, Atlas, and Tamko – but the recommendation follows the roof’s pitch, exposure, and your budget. Call (833) 467-4901 and we’ll talk you through the trade-offs for your specific house.
We evaluate drainage before we ever quote a hillside reroof in Sherman Oaks. That means looking at how water moves across the roof, down the valley, and away from the foundation, plus how the surrounding grade directs runoff. On lots south of Ventura Boulevard, we often need to add tapered insulation to improve drainage on flat sections, re-scupper the parapet walls, and adjust the grade at the foundation line. All of that is scoped into the original quote so the roof replacement addresses the water path, not just the shingle surface. Estimates are free – call (833) 467-4901.
Yes, and we do it regularly throughout 91403, 91413, 91423, and 91495. A detached garage flat roof in Sherman Oaks typically runs $6,500 to $11,000, and an ADU flat roof runs $8,000 to $15,000 depending on size, deck condition, and whether we’re doing a full tear-off with new insulation and tapered drainage. We handle the permits, the re-flashing at parapet walls and scuppers, and the heat-reflective membrane spec that keeps the roof from baking in valley sun. Call (833) 467-4901 for a free flat roof inspection.
Written by Neil Stratton, Owner at Huntington Beach Roofers, serving Sherman Oaks and the San Fernando Valley.