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 Gardena
A full Roof Replacement in Gardena typically runs $9,500 to $17,500 for a standard single-story postwar tract home, with flat-roof sections adding $3,000 to $7,000 depending on decking condition. Most projects take two to five days once materials land, but lead times on shingles and single-ply membranes set the real calendar. If you’re calling from 90247, 90248, or 90249, call Manny Cordero and the crew at (866) 974-2271 for a free written estimate before you order anything.
We work Gardena every week. We know the 1950s stucco bungalows off Rosecrans and Vermont, the flat-roof commercial strips along Western, and the custom homes tucked behind El Camino College. This isn’t a market we drive through. It’s one we know block by block.
Why Koreatown Roofing Is Gardena’s Preferred Roof Replacement Company
We’re a roofing-only contractor. Not a general contractor who subs out the roof, not a franchise call center rotating crews through the South Bay. Every job we run is a roof, whether it’s a tear-off on a 1961 tract home in 90247 or a low-slope re-cover on a duplex near Alondra Park. That focus means our Gardena customers talk to the same team from inspection through final walk-through.
Gardena’s contractor community runs tight. Family-run general contractors, bilingual crews, word-of-mouth referrals that go back decades. We respect that. Manny Cordero built this company on neighborhood accountability, meaning our reputation lives or dies on the street level. We sit at the table with the same local subs and suppliers everyone else in Gardena uses, and we’ve earned our place by showing up with honest numbers and the seven-brand material lineup generalists can’t match.
Response time to Gardena is usually same-week for estimates, and we book replacements based on material lead times, not crew availability. When you call (866) 974-2271, you get a real person who knows the difference between a pitched composition roof on Van Ness and a flat hot-mop section on a 1950s addition. That local knowledge is the reason Gardena homeowners keep us on their short list.
Styles & brands we work with
New Roof Installation in Gardena
New Roof Installation in Gardena usually means one of two things: a full tear-off replacement on an existing home, or roofing a new addition or ADU that the city has permitted. Most of our Gardena new-install work is the first case – the original 1950s comp roof has reached its limit and the decking below needs real attention. A standard single-story home in 90248 with 1,200 to 1,600 square feet of roof area runs $10,500 to $16,000 for architectural shingles with new underlayment, drip edge, and flashing. If you’re adding an ADU off the alley, budget $14,000 to $22,000 depending on roof complexity and tie-in details.
Decking and Sheathing Reality
On a 1950s or 1960s Gardena home, the deck under that old roof is often the original 1×6 tongue-and-groove or 3/8-inch plywood that’s been wet at the scupper corners and dried out at the ridges for sixty years. We scope re-sheeting as a line item in the bid, not a surprise change order. A typical Gardena tear-off replaces 15 to 30 percent of the decking, and that figure is in writing before we order a single bundle.
Flashing and Tie-In Details
Gardena has thousands of homes where a pitched front roof ties into a flat rear section – a mid-century design that looks great and fails at the junction when the flashing gives out. We replace the tie-in as its own detail: new metal, new mastic, new membrane lap, and no reused scupper drains. That’s the difference between a roof that lasts 25 years and one that leaks in two.
Reroofing in Gardena
Reroofing in Gardena means laying a new roof over an existing one, and we only recommend it when the decking is sound and the existing layer count meets LA County code. The honest truth: on most 1950s and 60s Gardena homes, reroofing saves money up front and costs more long-term, because the old deck gives out underneath and you’re tearing everything off anyway in ten years. A reroof over a single existing layer on a 1,200-square-foot Gardena home runs $8,500 to $12,000. That’s real savings when the deck checks out clean.
When Reroofing Works
If your Gardena home already had the deck replaced in the last twenty years – say a previous owner re-sheeted during a solar install – reroofing is a legitimate option. We’ll probe the deck, check the fastener pattern, and tell you straight if a layover will hold. No one on our crew gets paid more to sell you a tear-off.
When It Doesn’t
The flat-roof sections common across 90247 through 90249 are almost never reroof candidates. Ponding, patch-over-patch hot-mop, and UV-baked membranes mean the existing surface is too compromised to build on. We’ll say so, and we’ll quote you the tear-off number instead. That candor is why Gardena property owners keep calling us back.
Trusted Brands We Service in Gardena
We stock and install GAF, CertainTeed, Owens Corning, and IKO systems, and we maintain relationships with all seven major manufacturers so your Gardena roof gets the material that fits the job, not whatever one distributor happens to have in stock. Architectural shingles from Owens Corning hold up well under Gardena’s dry heat and Santa Ana UV exposure, while CertainTeed’s low-slope membranes handle the flat sections on older tracts. You’ll see GAF systems across many Gardena commercial and multi-family rooflines. The point is choice: your roof, your material, and an honest recommendation about which one fits your budget and your street.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Gardena Homes
- Original 1950s – 60s decking that’s soft or delaminated. We find this on most Gardena tear-offs. The old built-up roof finally fails, and the deck underneath has been rotting for years. We scope repair in the bid so the number doesn’t change mid-job.
- Patch-over-patch hot-mop around scuppers and drains. The flat sections behind many Gardena storefronts and home additions have layers of old repairs around the drains. We cut all of it out and rebuild the flashing detail fresh, because the scupper is where leaks actually start.
- Santa Ana wind uplift at ridges and eaves. Gardena sits in the wind corridor when the Santa Anas come through the 110 gap. If the starter strip, nailing pattern, and ridge cap aren’t installed to manufacturer spec, the shingle’s 130 mph rating is meaningless. We install to spec, every course.
- Custom soffit and fascia details that get ignored. Gardena has a surprising number of homes with custom millwork eaves and curved soffit returns. A high-end replacement here means rebuilding that fascia line before the roof goes on, and writing it into the scope. We coordinate with your millwork shop, not around it.
Pricing for Roof Replacement in Gardena, CA
Here are honest ranges for Gardena’s market. A standard single-story tract home tear-off with architectural shingles runs $10,500 to $16,000. Low-slope or flat-roof sections add $3,000 to $7,000 depending on membrane type and deck repair. Full deck re-sheeting runs $2.50 to $4.00 per square foot of roof area. Custom fascia and soffit rebuilds, common on Gardena’s nicer streets, add $2,000 to $8,000 depending on millwork. Call (866) 974-2271 for a free written estimate that fixes these numbers in ink before we order anything.
We Also Serve Cities Near Gardena
Our crews cover Gardena and the surrounding South Bay communities regularly. You’ll find our trucks in West Rancho Dominguez, Alondra Park, West Athens, and Lawndale on any given week. Same pricing discipline, same seven-brand material lineup, same fixed-in-writing estimates. If you’re a few blocks over the line, call anyway.
Serving Gardena, CA — Our Local Coverage Area
We’re based in the Gardena 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 Gardena
Because architectural shingles and single-ply membranes for Gardena’s mixed roof stock are ordered per job, not pulled from warehouse inventory, and manufacturer lead times run two to six weeks depending on the brand and color. Our crews are ready when the material lands. We fix your schedule in writing at the estimate, so you know the week the roof goes on before you sign.
Yes. On a 1950s or 60s Gardena home, we write a decking repair allowance into every bid because the original sheathing under the old roof is almost never sound. It’s not a surprise change order. It’s a line item with a range, and you approve any actual re-sheeting before we cut a single sheet. Call (866) 974-2271 and ask Manny to walk you through it on your own roof.
Usually, yes. On Gardena flat roofs, the leak is almost always at the scupper or drain flashing, where decades of patch-over-patch hot-mop have failed, not in the field membrane itself. We cut out and rebuild every penetration with new metal and new mastic, then tie the membrane into the new detail. Skip that step and you’ll be calling again next winter.
Line up decking allowance, flashing scope, underlayment type, shingle spec, and tie-in details side by side. Two bids can look $2,000 apart and be $5,000 apart once decking and scupper work are counted. A fair Gardena bid writes those numbers down. We give every Gardena homeowner a written scope that covers what we’ll remove, what we’ll repair, what we’ll install, and what it costs. Bring a competitor’s bid to the estimate and we’ll walk you through the gaps.
The install. A 130 mph shingle nailed at the wrong pattern or with a skipped starter strip is a 60 mph shingle. Santa Ana winds find the ridge and eave first, so we install the starter, the field, and the ridge cap to manufacturer spec every time. Brand matters for UV and granule performance, but the nailing pattern is what keeps your Gardena roof on the house.
For a free written estimate on your Gardena roof replacement, call Manny Cordero and the Koreatown Roofing team at (866) 974-2271. We’ll put the scope, the pricing, and the schedule in writing before any material gets ordered.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Gardena and the South Bay with roofing-only expertise, seven-brand material choice, and neighborhood accountability.