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 Downey
Roof replacement in Downey typically costs between $9,800 and $24,000 for a standard single-family home, with flat and low-slope roofs running $11,500 to $19,500. Most tear-offs on Downey’s 1950s and 60s homes take four to seven working days, and the single biggest variable is what the tear-off uncovers. We’ve worked on hundreds of Downey roofs where three layers of old material sit over original cedar shake decking, and that changes both the scope and the price. Call (562) 512-7366 and Erik Lindgren will walk you through exactly what to expect on your street, whether that’s near Stonewood Center or over in the North Downey tract.
Why Birchbark Roofing Long Beach Is Downey’s Preferred Roof Replacement Company
Downey homeowners keep calling us back because we write the price down before anything gets torn off, and because the crew that arrives is the crew we described on the phone: background-checked and uniformed. Our Roof Replacement team knows what a 1958 ranch on Firestone Boulevard needs differently than a 1972 two-story south of Imperial Highway, and we plan the tear-off around that. The 365-Day Done Right Promise covers every Downey job. If something wasn’t done right, we make it right. That guarantee is stamped on every contract we write in Downey.
Erik Lindgren leads the team that serves Downey, and he insists on the C.A.R.E. values on every job: clean up like it’s our own home, ask before we move or touch anything, respect your family’s quiet hours, and explain the price before any work begins. We’re part of the Cedarwell family of roofing companies since 2000, and every Downey roof carries the Cedarwell Care Promise along with our own 365-Day Done Right Promise. Shoe covers at the door, drop cloths through the hallway, and a photo of the completed clean-up before the crew leaves. The dog can stay inside; we’ll coordinate the door schedule with you.
Styles & brands we work with
Reroofing in Downey
Reroofing in Downey means something specific on these mid-century homes: tearing off every existing layer down to the decking, because Downey’s building code caps most residential roofs at two layers of roofing material. Many of these homes already carry two or three layers, and the city won’t let you add a fourth. Our reroofing process starts with a tear-off inspection, then a written price that includes what we expect to find. If the decking underneath is rotted or old skip sheathing has gaps, we write that allowance into the contract before we start, so you approve the number before we touch it.
Decking and Dry Rot Discovery
Tear-off on a 1950s Downey home frequently reveals decking that never dried properly after decades of minor leaks. Brittle underlayment lets water sit against the plywood, and the hot Downey summers bake it. We replace damaged decking to current code, install new fasteners per the manufacturer’s wind rating, and photograph everything before the new roof goes down.
Permit and Disposal Considerations
Older Downey homes may carry original built-up or wood shake layers containing asbestos, which the city requires be handled and disposed of through specific channels. We identify this during the initial inspection and write the abatement and disposal line into your written price. You’ll know that number before the tear-off begins, not as a surprise change order.
Flat Roof Replacement in Downey
Flat roof replacement in Downey mostly means the low-slope sections on the northern end of town: the 1950s ranches with parapet walls, internal scuppers, and built-up roofing that’s decades past its useful life. These roofs fail at the details. Flashing pulls away from parapet walls, scuppers clog, and ponding water works into the seams. We replace the entire membrane on Downey flat roofs, rebuilding the flashing details and improving drainage so water moves off the roof instead of sitting on it, and we use GAF and CertainTeed low-slope systems rated for Southern California sun exposure.
Parapet Wall and Scupper Flashing
On Downey’s older flat roofs, the failure almost always starts at the parapet wall or the scupper. We strip the old flashing, inspect the underlying wood, rebuild with new galvanized or aluminum flashing, and seal every seam. The written price includes this flashing work, because leaving 1950s flashing in place under a new roof saves money now and leaks within a year.
Reflective Roofing for Downey Sun
Downey gets serious UV exposure from May through October, and a white or reflective membrane on a low-slope roof cuts heat absorption and slows thermal movement that tears seams. We stock reflective coatings and membranes suited to Downey’s climate, and we’ll show you the cost difference in writing before you choose.
Trusted Brands We Service in Downey
We work with materials from GAF, CertainTeed, and Owens Corning on most Downey replacements, plus Boral products when a homeowner wants tile or composite roof details. What matters more than the brand name is that we stock the local Downey supply chain well; tear-off day doesn’t stall while a truck makes a run across the county. If you want a GAF Timberline HDZ architectural shingle in Barkwood, we have it. If your HOA or historic district requires a specific CertainTeed color, we’ll match it. You get the brand warranty on materials and our 365-Day Done Right Promise on the labor.
Common Roof Replacement Problems We See in Downey Homes
- Sun-baked underlayment breaking down at penetrations. Downey’s long dry season cooks the felt underlayment until it cracks and tears around vents, pipes, and chimneys. By the time a leak shows on the ceiling, the underlayment has been compromised for years, and the only real fix is full removal down to the decking.
- Old low-slope roofs with failed parapet and scupper flashing. The northern Downey flat roofs from the 1950s collect water when the flashing separates from the wall, and that water sits through the winter. Ponding leads to interior damage that looks like a plumbing leak but started on the roof.
- Santa Ana winds lifting shingles off old starter strips. When a previous owner overlaid a second layer over 1950s shingles, the original nailing pattern didn’t improve. Santa Ana wind gets under the edges and peels shingles back, and we see entire slopes sliding after one bad wind event.
- Original shake or built-up roofing hidden under newer layers. Downey homes from the post-war boom often have cedar shake or built-up roofing still in place under two newer layers. That old material may contain asbestos, and the decking underneath it is often rotted or has wide gaps that would fail inspection if left uncovered.
See the difference
Before
After
Before
After
Before
AfterPricing for Roof Replacement in Downey, CA
Here’s what we’re seeing on Downey homes right now. A full tear-off and reroof with architectural shingles on a 1,400 to 1,800 square foot ranch runs $11,000 to $16,500. Flat roof replacement on a 1,200 to 1,600 square foot mid-century home runs $11,500 to $18,000, depending on how much parapet flashing and scupper rebuilding is required. Roof decking replacement adds $2.50 to $4.00 per square foot when the existing deck is rotted or too gapped for current code. Asbestos abatement and special disposal, when needed on Downey’s older homes, runs $1,500 to $6,000 depending on the roof area involved. Those are the numbers you’ll see on your written quote, line by line. Call (562) 512-7366 and we’ll put a price in writing before anything is removed.
We Also Serve Cities Near Downey
Our crews cover Downey plus the surrounding communities where we regularly replace roofs: Santa Fe Springs, Paramount, La Mirada, and Hawaiian Gardens. The same written pricing, the same 365-Day Done Right Promise, and the same crew standards apply whether your roof is in central Downey or just across the 605.
Serving Downey, CA - Our Local Coverage Area
We’re based in the Downey 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 Downey
The original decking on Downey’s mid-century homes has been through 60 to 70 years of heat, minor leaks, and sometimes a re-roof or two that trapped moisture under old felt. Once we tear off to the deck, we often find rotted plywood or skip sheathing with gaps wide enough to fail code. We always write a decking allowance into the contract so you know the per-square-foot price before we confirm whether replacement is necessary. Call (562) 512-7366 and we’ll come inspect your decking before any work begins.
Downey sits far enough inland that Santa Ana winds hit without the ocean’s buffer, and they’re often hotter and drier by the time they reach the 90241 ZIP code. We use wind-rated nailing patterns, longer nails than the original 1950s installs, and full starter strips along every eave and rake. Coastal cities get gusty weather too, but Downey’s old roofs with short starter strips and brittle shingles lose more material in a wind event. The fix is in the installation details, and those details are written into your contract.
Downey requires that re-roofing on low-slope roofs over occupied space meet current title 24 energy standards, including the required level of insulation and, in most cases, a cool roof or reflective surface. You’ll also need a permit and inspection. We pull the permit, schedule the inspection, and make sure the roof passes before we call the job done. The permit cost is included in your written quote.
California building code limits most residential re-roofs to two layers total, and Downey enforces it. Many older Downey homes already have two or three layers, so adding another is not an option. Any quote that says “overlay” on a home with two existing layers is not a real option for you. We tear off every old layer, inspect the deck, and build up from there, and the written price includes disposal of all existing roofing.
Downey’s long, hot, dry summers bake the oils out of asphalt shingles, leaving them brittle and prone to cracking at the granule line, and the thermal expansion between day and night slowly stretches and tears the underlayment. We recommend shingles with higher granule adhesion, like GAF Timberline HDZ or CertainTeed Landmark, and we always replace the underlayment with a synthetic product rated for higher UV exposure. On flat roofs, we steer Downey homeowners toward white or reflective membranes that cut surface temperature by 30 to 50 degrees on an August afternoon.
What Opening Up a Downey Roof Actually Turns Up
On a 1958 ranch in Downey’s North Downey tract, our crew opened up a roof that had three layers over the original cedar shake decking. We found deteriorated skip sheathing and rodent-damaged soffit, so we replaced the decking, installed ice and water shield at all valleys, and upgraded to a GAF Timberline HDZ architectural shingle system with a new ridge vent, all after writing the asbestos abatement and decking replacement into the contract allowance. That is what a good Downey roof replacement looks like: not a handshake, but a written plan that anticipates what the tear-off will reveal. Downey’s 1950s-era homes hide original wood shake or built-up roofs beneath newer layers far more often than newer neighboring cities like Lakewood or Cerritos, which means our inspections are built around finding the old layer before it becomes a surprise. We write the allowance for anything we might uncover straight into the contract, and we get your written approval before we spend a dollar of it.
If you’re in Downey and your roof is at the age where replacement is on your mind, call (562) 512-7366 for a free estimate. Erik Lindgren and the team will come out, inspect the roof, walk you through what’s under the existing layers, and leave you with a written price. No pressure, no handshake promises. Just the number in dollars, and a crew that treats your home like a home.
Written by Erik Lindgren, Owner at Birchbark Roofing Long Beach, serving Downey with careful tear-offs, written pricing, and roofs that last.