Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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After
Before
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Before
AfterFast, Reliable Roof Installation Across Granada Hills
A full roof installation in Granada Hills typically runs $14,000 to $29,000 for a standard single-story ranch home, with standing seam metal landing between $22,000 and $38,000 depending on the fire-zone requirements in the northern foothills. Most jobs take 5 to 10 working days once materials are staged. We know those numbers matter, which is why every Granada Hills project starts with a written line-item price before a single nail is driven. Call (743) 200-8347 and we’ll come out, walk the roof with you, and hand you a number you can plan around.
Granada Hills isn’t one kind of roof market. Streets off Balboa and San Fernando Mission Boulevard sit on flat, forgiving lots, while homes backing up toward O’Melveny Park and the Santa Susana foothills face a different set of rules entirely. That local range is exactly why a generic roofing quote doesn’t work here. You need someone who knows both sides of the 91344 ZIP code and the fire-zone line that cuts through it.
Why Mercer Roofing Is Granada Hills’s Preferred Roof Installation Company
We’ve torn off and rebuilt enough Granada Hills roofs to know what’s under the shingles before we even climb the ladder. The original 3-tab and wood shake on 1960s ranch homes off Rinaldi, the post-Northridge reroofs clustered around Balboa Highlands, the mid-1990s architectural shingles now shedding granules on streets near Granada Hills Charter. That familiarity means our quotes account for what we’ll actually find, not a best-case guess.
Before any technician steps onto your property, you get their name and photo sent to you. They arrive in a clean, marked uniform and present a photo ID badge at the door. That’s the Threshold Verified standard, and every Mercer Roofing technician is background-checked and identity-verified under it. We’re part of the Threshold Group family, founded in 2000, and each independently owned location is held to that contract. For homeowners who want to know exactly who is on their property, that’s not a marketing line. It’s how every visit works.
Grant Whitlock leads our installation crews across the Granada Hills area. His approach is simple: write the real number down before work starts, explain what the permit will trigger, and don’t leave until the roof is actually right. Every job includes our 365-Day Done Right Promise. If it’s not right within a year, we make it right. And every repair carries a written guarantee with a free second visit if it fails.
Standing Seam Metal Roof in Granada Hills
Standing Seam Metal Roof installation in Granada Hills is the answer we give most often for hillside lots and any home inside or bordering the Very High Fire Hazard Severity Zone, where wood shake and non-Class-A materials are prohibited and a full tear-off becomes the starting point. The panels interlock with concealed fasteners, which means no exposed screws and far fewer points where funneled Santa Ana wind through the Santa Susana Pass can work something loose. In the northern neighborhoods off Sesnon Boulevard and along the O’Melveny Park boundary, that wind-uplift resistance isn’t a nice-to-have. It’s the reason the roof stays on.
What It Involves Here
We strip to the decking, inspect sheathing for the dry rot that the 100°F-plus summers accelerate, and install new underlayment rated for Class A assembly. Fasteners are hot-dip-galvanized, sized for the uplift conditions specific to the Pass, not a generic inland spec. Then we set the panels, install drip edge, and add ridge venting matched to the low-pitch gable profiles common on the area’s ranches.
When It Makes Sense
If your roof has been patched once already and the decking underneath is original, a standing seam roof buys you a 40-to-60-year service life here. For the 1994-to-1998 reconstruction cohort now hitting that 25-to-30-year wall, it’s often the last roof they’ll pay for. Plan on $22,000 to $38,000 for a typical Granada Hills ranch, with the fire-zone underlayment and fastener upgrades included in that number.
Tile Roof in Granada Hills
Tile Roof installation in Granada Hills shows up two ways: the original clay tile on mid-century custom homes in Balboa Highlands, and the newer concrete tile replacements spreading through the northern fire-zone lots. Tile is Class A by nature, which solves the fire-code problem immediately. But the weight matters on the area’s aging single-story trusses, and a bad install cracks tiles at the nail points. We see that constantly on older Granada Hills homes where someone swapped shake for tile without checking the framing.
Framing and Weight
Before we quote a tile roof, we go into the attic and check what’s actually carrying the load. Some 1960s trusses off Chatsworth Street were never engineered for tile, and the answer there is either a structural upgrade or a Class A standing seam alternative. We’ll tell you which one the house wants, with numbers for both. A tile installation on a Granada Hills ranch typically runs $18,000 to $32,000 depending on underlayment and whether we’re re-flashing the penetrations properly.
Underlayment Is the Real Roof
Tile is a wear surface. The waterproofing lives in the underlayment beneath it. On Granada Hills tile jobs we use a high-heat synthetic underlayment because the northwest Valley summer bakes standard felt into brittle sheets within a decade. Penetrations and valleys get extra flashing, because that’s where the failures start, not in the field of the roof.
Trusted Brands We Service in Granada Hills
We install and repair shingle systems from GAF, CertainTeed, and Owens Corning, and we keep a local stock of their accessories for Granada Hills customers. That means no waiting on a truck from across the county when a ridge cap or valley flashing comes up short on a job. For the area’s specific conditions, CertainTeed’s Landmark line holds its wind rating well when installed with proper starter strip and nail pattern, and GAF’s Timberline HDZ carries a strong Class A fire rating for the fire-zone homes. We’ll recommend the right one for your roof’s pitch and exposure, and the price is the price.
Common Roof Installation Problems We See in Granada Hills Homes
- Wind-sheared ridge caps on low-slope gables. The Santa Susana Pass funnels Santa Ana winds hard enough to lift improperly fastened caps. We re-fasten with longer, proper-pattern nails and add wind-rated ridge venting.
- Mid-90s roofs failing at penetrations, not the field. The 1994 Northridge quake triggered a wave of reroofs that are now aging out together. Pipe boots, chimney flashing, and valley metal go first on these.
- Grandfathered wood shake that can’t be patched legally. Pull a permit in the Very High Fire Hazard Severity Zone and the shake has to come off. We’ll tell you before you’re mid-job.
- Skipped starter strip and short nails. In the hot, dry northwest Valley, shingles lose their wind rating fast when installed wrong. We check nailing patterns on every evaluation and write what we find.
Pricing for Roof Installation in Granada Hills, CA
For a standard single-story ranch in Granada Hills, a full tear-off and architectural shingle reroof runs $14,000 to $22,000. Tile lands between $18,000 and $32,000. Standing seam metal, which is the most common choice for fire-zone homes and hillside lots, runs $22,000 to $38,000. The variables are square footage, roof pitch, decking condition, and whether your parcel triggers Class A requirements. Every estimate is a written line-item number handed to you before work starts. No numbers change once the contract is signed unless you approve a change order in writing. Call (743) 200-8347 for your free estimate.
We Also Serve Cities Near Granada Hills
Our Roof Installation crews work throughout the northwest San Fernando Valley. If you’re in San Fernando, Northridge, Porter Ranch, or Chatsworth, you’re within our regular service area. The same written pricing, the same badge-at-the-door technician policy, and the same 365-Day Done Right Promise apply. For more about how we work across the area, see our service details for Granada Hills and the surrounding communities.
Serving Granada Hills, CA - Our Local Coverage Area
We’re based in the Granada Hills 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 Installation in Granada Hills
Yes, in many cases. If your home sits inside the City of Los Angeles Very High Fire Hazard Severity Zone and still has wood shake or another non-Class-A material, a repair permit legally converts the job into a full Class A reroof. The existing material cannot be patched in place. We’ve seen this repeatedly on homes off Louise Avenue and along the O’Melveny Park boundary where owners expected a $800 repair and ended up with a full replacement. We’ll check your parcel before any permit is pulled so you know upfront. Call (743) 200-8347 and we’ll look it up for you.
The sun and wind. Granada Hills sits in the inland northwest Valley where summer highs regularly exceed 100°F, which bakes underlayment and flashing far harder than the marine layer neighborhoods 20 miles south ever experience. Add the Santa Ana winds funneling through the Santa Susana Pass and you get thermal fatigue plus wind-uplift stress on the same roof. A mid-1990s roof in Santa Monica might still be limping along. The same roof in Granada Hills hit its failure point years ago.
No. Certain Class A asphalt shingle assemblies meet the code, including specific GAF and CertainTeed systems designed for fire zones. Metal and tile are not your only options, though they’re often the strongest ones for hillside wind exposure. We’ll show you three compliant options at three price points and let you choose. The written quote always notes which fire-zone requirement applies to your parcel.
If your roof went on between 1994 and 1998, it’s now 27 to 31 years old. That’s past the service life of most 1990s composition shingles in Granada Hills heat. We’re replacing a large cohort of these roofs right now, and the common failure points are pipe boots, valley metal, and ridge caps, not the shingle field itself. A free inspection will tell you whether you have two years or two months. Call (743) 200-8347 to schedule one.
Line them up on six things: underlayment type and brand, nail pattern and fastener spec, whether decking replacement is included or billed extra, fire-zone compliance note, permit handling, and the written warranty terms in months. If one bid is $4,000 cheaper and uses 15-pound felt instead of synthetic underlayment, that’s not a better deal here. It’s a roof that fails earlier in Granada Hills heat. Our written quotes spell out every one of those six items so you can compare apples to apples. Call (743) 200-8347 for yours.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Granada Hills since 2000.