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 Signal Hill
Roof replacement in Signal Hill typically runs $14,000 to $32,000 for a full tear-off on the city’s 1920s – 1950s bungalows, with flat roof work on the hilltop corridors landing between $9,000 and $21,000. We’re Orange County Roofing Co, and our crews know this city’s roofs the way only years of tear-offs can teach. The morning marine layer off the harbor makes north-facing slopes look saturated when they’re just condensing. The oil-era ground under Temple Avenue settles and shifts. The original skip-sheathing hides beneath two or three built-over shingle layers. That’s exactly why our Roof Replacement team treats every Signal Hill home as its own diagnostic case, not a square count.
Kurt Hensley leads every estimate here, and he’s walked more Signal Hill roofs than he can count. Call (866) 942-4187 for a free inspection and written line-item quote. We never bid off the surface layer alone.
Why Orange County Roofing Co Is Signal Hill’s Preferred Roof Replacement Company
Signal Hill homeowners call us because we open up roofs and tell them what’s actually underneath. Not what we hope is underneath. The bungalows off Skyline Drive, the cottage rows near Cal State Long Beach, the mid-century flats along Cherry Avenue, they all carry their own roof history. Some have original 1x board decking. Some have three layers of composition shingle from three different decades. Some sit over old well casings that settled long before the current homeowner was born. We inspect first, document everything with photos, and write the real number into the contract before tear-off begins.
Our reputation in 90755 rests on one habit: we price the decking upgrade in writing before we touch anything. That’s the difference between a bid that holds and a bid that balloons. Homeowners searching for Roof Replacement in Signal Hill keep coming back because the number we quote is the number they pay, even when the roof underneath is worse than anyone expected.
We carry GAF in Signal Hill, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, so when we recommend a material, it’s because that material fits the house, not because it’s the only one we can get. Seven brands means an honest conversation about warranty tier, wind rating, and cost per square. And our response time to Signal Hill is tight: estimates are scheduled within days, tear-offs happen on a written timeline, and we pull the City of Signal Hill permit ourselves.
Styles & brands we work with






Reroofing in Signal Hill
Reroofing in Signal Hill means tearing off what’s there, repairing or replacing the deck underneath, and installing a new roof system on a stable, code-compliant plane. On the city’s 1920s – 1950s housing stock, “what’s there” is rarely just one layer. Our crews routinely find two or three built-over shingle layers on the original skip-sheathing, with the boards cracked, tented, or out of level over oil-era ground. A reroof here starts around $14,000 for a straightforward single-story bungalow and climbs based on decking condition, roof complexity, and the shingle you choose.
Decking and Leveling Before Shingles
We don’t nail new shingles onto a wavy deck. The ground under Signal Hill has been settling for close to a century, and the roof framing settles with it. When we open a roof and find the deck out of level, we re-plane it or replace it before the first row of underlayment goes down. That work gets priced and approved in writing. No change orders after the fact.
Built-Over Layers and What They Hide
Three layers of shingles hide a lot. Cracked sheathing. Rusted fasteners. Dry rot around old plumbing penetrations. On a re-roof, we strip to the framing, show you the photos, and replace what needs replacing. You don’t buy a roof over a shrinking foundation, so you shouldn’t buy one over failing decking either.
Flat Roof Replacement in Signal Hill
Flat roof replacement in Signal Hill shows up most often on the mid-century commercial and apartment buildings along the hilltop corridors, plus a handful of residential add-ons. These roofs fail differently than pitched shingle roofs. Ponding water from the marine layer, UV-heated membranes cracking under Santa Ana sun, and rusted edge flashing are the usual culprits. Flat roof replacement here runs $9,000 to $21,000 depending on square footage, decking condition, and the membrane system we spec.
Membrane Systems for Coastal Exposure
Salt air off the harbor shortens the life of cheap flashing. We spec systems rated for coastal exposure, with proper slope correction where the original roof was built too flat. If the deck underneath is rotted from years of trapped moisture, we say so and fix it before the new membrane goes down.
When Patching Stops Making Sense
A Signal Hill flat roof with multiple patches, cracked seams, and soft spots underfoot has reached the end of its service life. At that point, throwing more repair money at it costs more per year than a proper tear-off and replacement. We’ll tell you straight, and the bid will show the math.
Trusted Brands We Service in Signal Hill
We install GAF, CertainTeed, and Owens Corning regularly across Signal Hill, along with Atlas and Tamko when the job calls for a specific wind rating or warranty tier. Boral rounds out the roster for certain architectural profiles. Because we’re authorized across seven manufacturers, we keep a running stock of matching accessories, ridge vents, and flashing for common Signal Hill roof configurations. That means less waiting on supplier lead times and more certainty on your project schedule. We recommend the material that fits your roof’s pitch, your budget, and the coastal exposure, not the one with the best contractor rebate.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Signal Hill Homes
- Skip-sheathing and 1x board decking. Original roof decks on 1920s – 1950s bungalows are often gapped boards, not plywood. If you bid off the surface layer alone, the decking upgrade is unpriced. We inspect and write it into the contract.
- Out-of-level decks from oil-era settling. The ground under Signal Hill has shifted for decades. Roof decks follow. Shingle courses run wavy unless the deck is re-planed or replaced first.
- Rusted and lifted fasteners at the edges. UV, heat cycling, and Santa Ana winds work the drip edge, valleys, and penetrations harder than the field of the roof. Fasteners fail there first, and we replace them as part of every tear-off.
- Condensation-wet north slopes. The morning marine layer makes a north-facing slope look soaked when it’s just condensation on the surface. A good inspector knows the difference. Ours do.
Pricing for Roof Replacement in Signal Hill, CA
A full roof replacement on a typical Signal Hill bungalow runs $14,000 to $32,000. Architectural shingles on a simple single-story run $15,000 to $22,000. Flat roof replacement sits between $9,000 and $21,000. The biggest cost driver in Signal Hill is the deck. If the skip-sheathing is cracked, tented, or out of level, the decking line item moves up. We prefer to quote that honestly up front rather than pretend it won’t come up. Every estimate from Orange County Roofing Co is free, written, and line-itemed so you can compare bids without squinting. Call (866) 942-4187 to schedule yours.
A quick note on bids: if one Signal Hill roof replacement quote is $8,000 under the other three, read the decking line. It probably isn’t there.
We Also Serve Cities Near Signal Hill
Our crews replace roofs across the surrounding area, including Signal Hill, Long Beach, Lakewood, Carson, and Hawaiian Gardens. We schedule inspections throughout the region within days, and every job gets the same written line-item estimate and the same warranty coverage.
Serving Signal Hill, CA — Our Local Coverage Area
We’re based in the Signal Hill 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 Signal Hill
Because the initial bid was written off the surface layer, not the deck underneath. Signal Hill’s 1920s – 1950s bungalows routinely hide cracked skip-sheathing, out-of-level decking over settled oil-era ground, and two or three built-over shingle layers. A contractor who doesn’t open the roof before bidding hasn’t priced any of that. We inspect first, document the deck, and write the real number into the contract before tear-off starts. Call (866) 942-4187 for a line-item estimate that holds.
Yes, many do. The city’s housing stock was mostly built between the 1920s and 1950s, when plywood decking wasn’t standard. Original roofs often sit on gapped 1x boards. If the home hasn’t had a full tear-off since construction, that deck is still there, and it’s usually cracked, tented, or out of level. A proper decking assessment is part of every inspection we do in 90755.
Yes, in most cases. When the roof is opened, the City of Signal Hill building inspector can require decking upgrades, ventilation improvements, and fastening upgrades to meet current code. We know which triggers are common on older homes here and we build those allowances into the contract in writing. That way, the inspection doesn’t turn into a surprise bill.
Line them up line by line. Look for the decking allowance, the number of squares, the underlayment spec, the shingle brand and warranty tier, and whether the permit is included. If one bid omits decking or permits, it isn’t a real bid. We give a written itemized estimate for every Signal Hill project so the comparison is apples to apples.
Yes, when installed to the right spec. Signal Hill sees intense UV from clear coastal sun and strong Santa Ana wind events that lift poorly fastened shingles at the edges. Architectural shingles from GAF, CertainTeed, and Owens Corning rated for high wind, installed with the right fastener pattern and drip edge, hold up well here. The installation matters as much as the material. Call (866) 942-4187 to talk through your roof’s exposure and get a recommendation that fits.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Signal Hill since day one.