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 Roof Repair Across Van Nuys
Roof repair in Van Nuys usually costs between $350 and $1,800 depending on what failed, and most leak repairs we handle are done the same day we diagnose them. If you’re seeing water stains on a ceiling in Valley Glen, or granules washing into your gutters near Van Nuys Boulevard, the roof is telling you something. Our Roof Repair team knows exactly how Van Nuys ranch homes from the 1940s through 1960s fail, because we’ve torn into hundreds of them. Call (341) 217-2677 and a real person answers, day or night.
Key Takeaways
- Typical Van Nuys roof repairs run $350 – $1,800; full low-slope tear-offs on older ranch homes run higher.
- Ponding water and UV cracking are the two biggest killers of Van Nuys roofs, especially on post-WWII low-slope sections.
- Every job gets a written price before work starts, and a 365-Day Done Right Promise in writing.
- Your technician’s name and photo are sent to you before they arrive, and they badge in with photo ID at the door.
Styles & brands we work with






Why Mercer Roofing Co Woodland Hills Is Van Nuys’s Preferred Roof Repair Company
We’ve spent years working the neighborhoods of Van Nuys, from the tree-lined streets off Sherman Way to the post-war tracts near Sepulveda Basin. That local time matters. A roofer who doesn’t know that Van Nuys sees 100-degree weeks every summer won’t understand why your composition shingles are shedding granules at year twelve instead of year twenty. Grant Whitlock, who leads Mercer Roofing Co Woodland Hills, built our process around one thing: you should know exactly who’s coming to your door and exactly what you’ll pay before any work begins.
We dispatch crews to Van Nuys from our Los Angeles-area office, and every technician is background-checked, uniformed, and photo-badged under the Threshold Verified standard. Before your appointment, we send you the technician’s name and photo. When they knock, they present a photo ID badge. That’s not a gimmick, it’s the floor of how we operate.
Our Van Nuys customers tell us the same thing again and again: they’d rather pay a little more and know the person on their roof is who we said they’d be. That’s the whole point.
Roof Leak Repair in Van Nuys
Roof leak repair in Van Nuys homes typically costs between $350 and $900 when the source is a single failed flashing point, a cracked vent boot, or a small section of damaged shingle. Older ranch homes in Van Nuys often hide leaks for months before they show up on a ceiling, because water travels along the low-slope decking before it finds a seam to drip through. By the time you see the stain, the leak may have started at a valley or soil stack twenty feet away.
We start every leak repair by finding the entry point, not just the exit point. On a 1950s ranch in Valley Glen, we’ve traced a ceiling stain in a front bedroom back to a failed flashing collar around a plumbing stack on the opposite side of the ridge. If we’d patched the visible spot, the homeowner would have been calling us again in six months.
Valley and Flashing Leaks
Original 1950s flashing around penetrations and valleys fails after decades of heat expansion and UV exposure. The metal fatigues, the sealant cracks, and water finds its way under the shingles. We replace the flashing, not just seal over it.
Vent Boot and Pipe Collar Failures
Rubber vent boots on Van Nuys roofs dry out and split in the intense San Fernando Valley sun years before they would on a coastal roof. A split boot lets water run straight down the pipe and into the attic. It’s a $200 – $400 fix when caught early, and a much bigger problem when it isn’t.
Emergency Roof Repair in Van Nuys
Emergency roof repair in Van Nuys typically runs $500 – $1,500 depending on the size of the affected area and whether we’re tarping and returning later or fixing the issue on the spot. Winter rainstorms in the Valley come hard and fast, and a roof that was fine in October can be leaking by the first week of December. When that happens, call (341) 217-2677 and a live person picks up, even at 2 a.m.
We respond to Van Nuys emergencies with water mitigation as the first priority. That means tarping the source if it’s actively raining, then returning to do the permanent repair once the roof is dry enough to work safely. We don’t slap shingles onto wet decking and call it done.
Storm Damage and Wind Lift
Van Nuys gets occasional strong Santa Ana wind events that lift shingle tabs and tear off ridge caps. Loose shingles expose the underlayment and let wind-driven rain reach the decking. We secure what’s loose and replace what’s broken, then document what the storm did for your insurance if a claim is warranted.
Active Leak Tarping
When water is coming into the house, tarps stop the damage fast. We anchor them properly, return to do the permanent repair, and the temporary protection is included in the final written price you approved before we started.
Trusted Brands We Service in Van Nuys
We repair and install Owens Corning, IKO, and Atlas roofing systems, and we know how each performs under Van Nuys heat. Owens Corning Duration shingles hold their granules well in high UV, IKO’s Dynasty line offers a heavier mat that resists thermal cracking, and Atlas makes a strong option for homeowners wanting a specific color match on an older ranch. We keep common flashing, boot, and patch materials stocked for fast turnaround on Van Nuys jobs, so you’re not waiting on a parts order while a leak keeps dripping.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Repair Problems We See in Van Nuys Homes
- Ponding water on low-slope sections. The post-WWII ranch homes that dominate Van Nuys often have roof sections with barely enough slope to drain. Water sits, breaks down tar-and-gravel surfacing, and rots the decking beneath.
- UV-cracked built-up roofs. Decades of 100-degree summers cause thermal cracking in asphalt built-up roofing and premature granule loss on composition shingles, which is why a Van Nuys roof rarely reaches the lifespan the manufacturer lists for cooler climates.
- Failed original flashing at penetrations. Soil stacks, vents, and valleys sealed in the 1950s and 1960s eventually fail from heat expansion. These leaks are hidden and persistent, often misdiagnosed as shingle failures.
- Wood shake roofs reaching the end of the line. Many older Van Nuys homes still have original wood shake, which local fire codes now discourage. Repair is possible in some cases, but full replacement is often the better call, and we’ll tell you straight which one applies.
Pricing for Roof Repair in Van Nuys, CA
Here’s what Van Nuys homeowners actually pay for common repairs: shingle replacement runs $350 – $700 for a small area, leak repair with flashing work runs $400 – $900, flat roof patches run $450 – $1,200, vent boot replacement runs $175 – $350, and valley repairs run $500 – $1,200. A full low-slope tear-off on an original tar-and-gravel roof in Valley Glen or the neighborhoods south of Victory Boulevard runs $8,000 – $18,000 depending on size and decking condition.
What moves the price: how much rotted decking we find once the old roofing is off, how many penetrations need new flashing, and whether the roof has multiple low-slope sections needing elastomeric coating. We scope the roof before we quote, and the written price you approve is the price you pay. No change orders, no surprise line items. Call (341) 217-2677 to schedule your free estimate.
We Also Serve Cities Near Van Nuys
We take the same approach everywhere we work around the Valley. If you’re in Encino, Reseda, Tarzana, or Winnetka, you’re getting the same written pricing, the same photo-badged technicians, and the same 365-Day Done Right Promise on every repair. Van Nuys is the hub we know best, but these neighboring communities share the same housing stock and the same brutal summer sun, so the problems look the same and so do our fixes.
Serving Van Nuys, CA - Our Local Coverage Area
We’re based in the Van Nuys 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 Van Nuys
The original tar-and-gravel roofs on 1950s Van Nuys ranches were built to a standard that’s now 60 to 70 years old, and ponding water plus decades of Valley heat have broken down both the surfacing and the decking beneath. Patching a roof in that condition buys you months, not years. A tear-off lets us replace rotted wood, install a modern self-adhered underlayment, and put down a reflective elastomeric coating that handles ponding and UV far better than the original system ever did. Call (341) 217-2677 and we’ll tell you honestly if your roof is a patch candidate or a replacement candidate.
Van Nuys roofs take roughly 30 to 40 percent more UV exposure than coastal roofs, and summer attic temperatures regularly hit 140 degrees, which cooks shingles from both sides. Granule loss starts earlier, matting cracks sooner, and sealant strips fail faster. A shingle rated for 25 years in a coastal climate might give you 15 to 18 in Van Nuys. That’s why we recommend heat-rated shingles like Owens Corning Duration or IKO Dynasty for valley replacements.
Yes, if the ponding is isolated and the decking underneath is still solid. We clean the area, apply a self-leveling patch, and in many cases coat the entire low-slope section with elastomeric to move water off faster. If the decking has rotted or the ponding covers most of the roof, we’ll tell you straight that repair dollars are better spent toward a tear-off. Either way, the written price comes before any work starts.
It depends on the shake’s age and condition. If the shakes are sound and only a small area is damaged, a repair makes sense. But most original Van Nuys wood shake roofs are past 50 years old, dried out, and non-compliant with current fire codes. Replacing with a Class A composition shingle or standing seam metal is usually the better long-term move. We’ll walk you through both options with real numbers before you decide.
We do. Detached garages, converted ADUs, and workshop structures all over Van Nuys have roof problems of their own, and they’re often lower priority until a leak damages stored belongings or the structure itself. We scope them the same way as a main house: find the entry point, write the price, do the fix, guarantee it for a full year. If a repair fails within 365 days, we return and fix it again at no charge.
Call (341) 217-2677 to schedule your free roof repair estimate in Van Nuys. A live person answers, and the technician we send will be the person we told you to expect.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Van Nuys and the surrounding Valley communities.