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 Replacement Across Northridge
Roof replacement in Northridge typically runs $9,500 – $18,500 for a standard single-story ranch home, with tile roofs landing higher because of the labor involved in removing and resetting concrete tile. We’re Koreatown Roofing, and we’ve spent years tearing off and rebuilding roofs across 91324, 91325, 91327, and 91328. Northridge isn’t a coastal roof market. It’s a heat-and-wind market, and that changes what materials actually hold up. If you’re seeing granules in your gutters or water stains on your ceiling, call us at (866) 974-2271 for a free estimate. We show up, we look, we give you a straight answer.
Why Koreatown Roofing Is Northridge’s Preferred Roof Replacement Company
We’re a roofing-only contractor. Every job we take is either an inspection, a repair, or a replacement. That’s it. When a Northridge homeowner calls us, they’re not getting a general contractor who’ll sub the roof out to whoever’s available that week. The crew that shows up at your house works for Koreatown Roofing, and their only trade is roofing.
Manny Cordero leads our team, and he’s built the company on a simple idea: give homeowners real material choice instead of pushing one brand because it’s convenient for us. We install products from GAF, CertainTeed, Owens Corning, Boral, and others. Your roof, your material choice. That matters in Northridge, where the right shingle or tile underlayment is the difference between a roof that lasts 20 years and one that fails in 12. Neighborhood accountability means our reputation is tied to every roof we put on in the Valley. We don’t hide behind a call center. You call us, you talk to people who know roofing and know Northridge.
Styles & brands we work with
New Roof Installation in Northridge
New Roof Installation in Northridge means a full tear-off down to the decking, then building the roof back up with materials specified for this specific climate. A typical new roof installation in Northridge runs $10,000 – $18,500 depending on square footage, pitch, and material. When a Northridge homeowner needs a new roof, it’s usually because the old one has reached the end of its life, been damaged by Santa Ana winds, or is leaking in multiple spots where patch repairs no longer make sense. We don’t layer new shingles over old. We tear off, inspect the decking, and replace anything that’s soft or rotted before we lay down new underlayment and roofing material. That’s the only way to know what you’re actually getting.
Full Tear-Off and Decking Replacement
On 1960s and 1970s ranch homes, the decking is often plywood or spaced board that’s been baking under Valley heat for 50-plus years. We check every sheet. Soft spots from old water intrusion get cut out and replaced before new roofing goes on. This adds cost, but skipping it means your new roof fails from underneath.
Underlayment Specified for Valley Heat
Northridge heat is brutal on the underside of roofing material. We specify high-temp synthetic underlayment, not 15-pound felt, so it doesn’t dry out and crack the way original 1960s felt did. This is the layer that actually keeps water out, and it’s where we see most failures on older tile roofs.
Reroofing in Northridge
Reroofing in Northridge is a smarter path when the existing roof structure is sound but the surface material has failed. A reroof in Northridge typically runs $8,500 – $15,000, depending on whether we’re going over a single existing layer or doing a full tear-off first. Northridge homeowners choose reroofing when the decking is still solid and the issue is worn shingles, cracked tile underlayment, or failed flashing. The key difference from new installation is that reroofing preserves what’s still good and replaces what isn’t. That keeps material costs down and gets the job done faster.
Tile Reset With New Underlayment
This is the Northridge specialty. We’ve seen too many tile roofs where the tile itself looks fine but the underlayment underneath has turned to brittle paper. We pull the tile, replace the underlayment with high-temp synthetic, and reset the tile with stainless-steel fasteners. You keep the look. You get back the waterproofing.
Shingle Reroof Over Existing Decking
When the decking checks out clean, we can strip the old shingles and install new architectural shingles from GAF, CertainTeed, or Owens Corning without replacing the structure. It’s faster and less expensive, and in Northridge it’s a common choice for mid-century tract homes that already have modern plywood decking.
Trusted Brands We Service in Northridge
We install products from the brands Northridge homeowners already know and trust: GAF, CertainTeed, Owens Corning, and Boral, along with IKO, Atlas, and Tamko. Having seven manufacturer relationships means we’re not tied to whatever one supplier has sitting in the warehouse. We spec the material that fits your roof, your budget, and the way Northridge weather actually hits your house. If you need a specific shingle color or tile profile matched on a reroof, we can source it. We also keep common fasteners, flashing, and underlayment on hand so Northridge jobs don’t stall waiting on parts. One contractor, every stage, from inspection to repair to Roof Replacement.
Common Roof Replacement Problems We See in Northridge Homes
- Dried-out underlayment under concrete tile. The tile on a 1960s ranch home in Northridge can look completely fine while the underlayment underneath has baked into a brittle sheet. Heat cycling does that. By the time water stains show up on the ceiling, it’s been leaking for years.
- Wind-lifted shingle edges and ridge vent damage. Santa Ana winds coming over the Santa Susana Pass hit 130 mph in the worst events. Shingles and tile edges that aren’t fastened for that kind of uplift crack and tear loose, especially along the ridge and at the eaves.
- Corroded flashing at penetrations and valleys. UV and heat degrade standard galvanized flashing faster in Northridge than in coastal markets. We routinely find valley metal and pipe boot flashing that’s rusted through while the surrounding roof still looks serviceable.
- Soft decking hidden under multiple layers. Some Northridge homes have two or three layers of shingles stacked over original 1950s decking. Water gets trapped between layers, the decking rots, and by the time anyone notices, the repair is a full tear-off instead of a patch.
See the difference
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AfterPricing for Roof Replacement in Northridge, CA
Here are real numbers for the Northridge market. A standard asphalt shingle roof replacement on a 1,500 – 2,000 square foot single-story home runs $9,500 – $14,500. Tile removal and reset with new underlayment runs $12,000 – $18,500 because of the labor involved in handling concrete tile. Flat or low-slope sections, which are common on mid-century Northridge homes, add $800 – $1,500 per section depending on membrane type. What moves the number: roof pitch, number of penetrations, decking condition, and whether we’re doing a full tear-off or a reroof. We give written line-item quotes so you see exactly where the money goes. Call (866) 974-2271 to schedule your free estimate.
We Also Serve Cities Near Northridge
Our crews know the Valley. Beyond Northridge, we handle roof replacement in North Hills, Encino, Van Nuys, and Valley Glen. Each of those areas has its own housing stock and its own wind exposure, and we spec materials accordingly. If you’re in a neighboring city and your roof is failing, call us. Same team, same straight answers.
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 Replacement in Northridge
The tile is the wear layer, not the waterproofing layer. The waterproofing is the underlayment underneath, and on 1960s Northridge homes that underlayment has been baking in San Fernando Valley heat for 50 to 60 years. It dries out, cracks, and stops shedding water. The tile above it can look perfect. On a 1968 ranch near Reseda Blvd and Superior Street in 91325, we tore off original concrete tile that looked intact but found underlayment dried to a brittle sheet. Wind-driven rain had been seeping through hairline cracks for years. Call (866) 974-2271 and we’ll inspect yours the same way we inspected that one.
You need fasteners rated for high wind uplift, yes. Santa Ana winds coming through the Santa Susana and Porter Ranch passes hit Northridge differently than they hit Burbank or Encino. Starter strips, ridge vents, and tile edges need stainless steel or hot-dip galvanized fasteners specified for 130 mph uplift. Standard big-box nails won’t hold. Cheap fasteners cost you a full re-roof within a decade. That’s not a risk worth taking with a five-figure investment.
A properly specified inland-spec roof replacement in Northridge runs about 15 – 20% more than a coastal-spec version of the same job, mostly because of upgraded underlayment, stainless-steel fasteners, and high-temp flashing. But the cheap spec costs you more within a decade. We’ve seen Northridge roofs where the original spec lasted 30 years and the cheap replacement lasted 8. The math is obvious. Spend the extra now or pay for the whole job twice.
Ask for a line item on decking replacement, a line item on underlayment type, and a line item on fastener spec. If the quote says “nails” and doesn’t say “stainless steel” or “hot-dip galvanized,” that’s a red flag in Northridge. Ask whether the quote includes high-temp synthetic underlayment or old-school felt. Ask whether the price covers tear-off or whether you’re getting a layover. Then call us at (866) 974-2271 for a written line-item quote that makes the comparison easy.
Northridge roofs degrade faster than roofs in Encino or Burbank because there’s no marine layer to soften the summer heat. A 15-year shingle in Encino is often a 12-year shingle in Northridge. The heat cycling is harsher, the UV is more direct, and the Santa Ana wind exposure is more aggressive. That doesn’t mean you’re replacing your roof every 12 years. It means the materials you choose matter more here. Call (866) 974-2271 for an exact assessment of your roof’s remaining life.
Call Koreatown Roofing for Your Northridge Roof Replacement
If your roof is leaking, cracking, lifting, or just looks tired, don’t wait until the next rain. Manny Cordero and the Koreatown Roofing team will inspect it and tell you straight what needs to happen, whether that’s a repair or a full replacement. We’re roofing specialists, not generalists. We work with the brands you already trust. Call (866) 974-2271 to schedule your free estimate today.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Northridge and the San Fernando Valley.