Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Repair Across Northridge
Roof repair in Northridge means dealing with a roofing stock that went through the 1994 earthquake, and we know that better than most. A leak here is rarely just a missing shingle. It’s often the first sign of problems that started during the quake and were patched under insurance pressure decades ago. If you live in a ranch home near CSUN, a two-story near Porter Ranch Drive, or anywhere in the 91324, 91325, or 91326 ZIP codes, we can have a technician at your door fast. Call (743) 200-8347 anytime. A live person answers, and you’ll know exactly who’s coming before they arrive.
Why Mercer Roofing Is Northridge’s Preferred Roof Repair Company
Northridge homeowners call us because we treat the house the way you treat it: as a place to be protected, not just a job site. Before our technician shows up, you get their name and photo. When they ring the bell, they’re in a clean Mercer uniform with a photo ID badge clipped to the chest. That’s the Threshold Verified standard we’re held to on every visit, and it matters in a neighborhood where people are home during the day and want proof of who’s at the door.
Grant Whitlock leads our team with the same approach he’s used since we were founded in 2000. Every repair here starts with a written price before work begins. No exceptions. That’s how we’ve built our reputation across Northridge, from the tract homes east of Reseda Boulevard to the 1980s two-story builds west of Balboa. We answer live 24/7, and our response time to Northridge is measured in hours, not days.
We also back every repair with the 365-Day Done Right Promise. If the fix doesn’t hold within a year, we make it right and the second visit is free. That’s written on every single job. No conditions, no fine print.
Roof Leak Repair in Northridge
Roof Leak Repair in Northridge usually costs between $350 and $1,100 depending on whether we’re dealing with a straightforward vent boot replacement or chasing water that’s traveled under the decking. A simple exposed-nail re-seal might run $250, while a full valley re-flash on a 1970s ranch with moved framing can reach $1,500. The honest answer is that the leak you see is rarely the whole story, which is why we inspect before we quote.
Chasing the Real Source
In Northridge, water doesn’t always drip straight down. A stain in the living room ceiling could be from a chimney chase on the other side of the house, especially on pre-1994 builds where the flashing angles shifted when the foundation moved. We trace the water from the drip point back to the entry point before we price anything.
What the Repair Involves
Most leak repairs here involve more than caulk. That’s the point. We lift the shingles or tile, check the decking underneath, re-nail sheathing to the current nailing schedule if it’s moved, and replace flashing so it sheds water again. If we find hidden rot, you approve the extra work in writing before we touch it. The price on your repair doesn’t change unless you’ve signed off on it.
Emergency Roof Repair in Northridge
Emergency Roof Repair in Northridge typically runs $400 to $1,800 depending on what the wind or a fallen branch tore open. Santa Ana gusts over 60 mph peel ridge caps and lift tile on Valley roofs fast, and when that happens, you need a tarp or a temporary patch before the next rain hits. We respond to emergency calls in Northridge quickly, and we’ll give you the price before we start.
Storm Damage First Steps
When a Santa Ana or a sudden downpour opens a hole, the first step is stopping the water. Our technician reviews what happened, identifies the entry point, and secures the area with a temporary covering when needed. Then you get a written quote for the permanent repair, so there’s no open-ended chase.
Post-Quake Structural Surprises
We’ve responded to emergency calls in Northridge where the wind didn’t cause the original damage at all. On homes built before 1994, a lifted ridge cap can reveal framing that never fully settled back after the earthquake. If we see that, we document it with photos, show you what we found, and give you a written price before we rebuild. Nothing happens without your signature.
Trusted Brands We Service in Northridge
We repair and install roofs using the shingle brands Northridge homeowners already have on their homes. That includes GAF, CertainTeed, and Owens Corning, plus tile systems from Atlas and Tamko when we’re working on the concrete and clay tile so common on 1980s two-story builds here. Because we stock common replacement components for these brands locally, we can often turn a repair around fast. If your existing roof is still under a manufacturer’s warranty, we work within that to protect your coverage.
Common Roof Repair Problems We See in Northridge Homes
- Caulked-over flashing on pre-1994 homes. The earthquake shifted foundations enough that original flashing angles stopped shedding water. Homeowners sealed the gaps with caulk instead of re-flashing, and the rot underneath only shows up at tear-off.
- Mismatched decking from fast insurance repairs. The wave of roofs patched between 1994 and 1997 used whatever decking plywood was available. It passes a visual check but flexes underfoot and lets water pool around the fasteners.
- Tile dead load on earthquake-stressed rafters. Many 1950s-to-1970s ranch homes added lightweight concrete tile after the quake. That adds weight to framing that was already moved once, so a cracked tile replacement can miss the structural issue underneath.
- Santa Ana ridge cap and starter strip failure. Winds through the Valley corridor peel ridge vent and starter strip when the original nailing pattern was never upgraded to the manufacturer’s wind spec for 60-plus mph gusts.
Pricing for Roof Repair in Northridge, CA
Here’s what you should expect for common repairs in Northridge. Shingle replacement runs $350 to $700 for a small section, more if the decking underneath needs work. Flashing repair around chimneys and skylight curbs costs $400 to $1,200 depending on whether we’re re-bending and re-securing or fully replacing rotten wood. Vent boot replacement is $250 to $450. Flat roof patch work on Valley homes runs $500 to $1,500. Valley re-flash and underlayment work can reach $1,800 on older builds with shifted framing. These are real numbers for this market. Call (743) 200-8347 for a free estimate and a written quote before any work starts.
We Also Serve Cities Near Northridge
Our Roof Repair team covers homes across the west Valley. In addition to Roof Repair in Northridge, we take calls from Reseda, Porter Ranch, Chatsworth, and Granada Hills. Same written pricing. Same badge-at-the-door standard every time.
Serving Northridge, CA - Our Local Coverage Area
We’re based in the Northridge 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 Repair in Northridge
Because the roof you’re repairing went through the 1994 Northridge earthquake, and the patch done under insurance pressure in the mid-1990s often hid problems rather than fixing them. We find caulked-over flashing, re-nailed sheathing that was never properly secured, and mismatched decking that leaks from underneath. That’s why we inspect first and price the real repair in writing before we start. Call (743) 200-8347 for an honest look.
You approve the extra work in writing before we touch it. Our contract includes written allowances for exactly these situations, and our technicians photograph everything they find so you can see it too. No “surprise” line item ever lands on your invoice without a signature. That’s how Grant Whitlock has structured every Mercer job since 2000.
Sometimes, yes. If we’re repairing structural decking, re-nailing sheathing, or replacing framing, the city can require the repair to meet current nailing schedules and shear-wall requirements. That’s a good thing for your roof, but it can add cost. We walk you through exactly what the permit triggers on your specific home before work starts, and it’s all in the written quote.
A leak repair is the slower, more methodical job of tracing water from the drip point to the entry point, then repairing it for good. An emergency repair is about stopping active water entry fast, usually with a temporary covering, then returning for the permanent fix. Emergency work costs more because of the immediate response. Both start with a written price. Call (743) 200-8347 for either.
Yes, and that’s a big part of what we do in Northridge. The original patch is usually the reason the roof is leaking now. We tear back the patch, inspect the decking and flashing underneath, and re-repair the whole section so it’s finally done right. The 365-Day Done Right Promise covers the new repair in writing. Call (743) 200-8347 to schedule a free estimate.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Northridge since 2000.