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 South Whittier
Roof replacement in South Whittier means dealing with a specific generation of homes: single-story tract houses from the 1950s through the 1970s, most with low-slope composition shingle roofs that have baked under decades of Southern California sun. A full tear-off and re-roof on a typical South Whittier home runs $9,500 to $18,500 depending on square footage, decking condition, and shingle grade. We schedule South Whittier jobs within 7 to 14 days of your written estimate. Call (831) 777-6412 and a live person answers, day or night.
What makes South Whittier different from neighboring cities is the age and condition of what’s under the shingles. We know that before we quote, and we write the decking inspection into the job scope, not as a surprise add-on later.
Why Crestview Roofing Co West Covina Is South Whittier’s Preferred Roof Replacement Company
We’ve torn off enough roofs along Mulberry Drive, Calmada Avenue, and the streets west of Pioneer Boulevard to know what a 1960s South Whittier roof looks like underneath. That’s the part most homeowners never see until the shingles come off, and it’s the part that separates a straight replacement from a job that balloons mid-project. Dylan Pace built Crestview Roofing around a simple rule: the number on the written estimate is the number on the invoice. If the decking is rotted, we price the replacement as a written line item before work starts, not after we’ve opened your roof.
Our South Whittier customers consistently mention three things: the written price before any work begins, the photo updates before and after, and the live arrival time you can track on your phone. No four-hour windows. No voicemail tag. A live person answers 24/7, and every repair and replacement carries the 365-Day Done Right Promise in writing.
Styles & brands we work with
Roof Replacement Contractor in South Whittier
A roof replacement contractor in South Whittier has to be ready for what’s underneath the shingles, not just the shingles themselves. Homes here were mostly built between 1950 and 1980, and many still have their original dimensional lumber decking, skip sheathing, and organic felt underlayment that crumbles the moment you pull it up. A proper replacement means tearing everything down to the rafters, inspecting what’s there, replacing what’s failed, and building back to current code. Typical full replacements in South Whittier run $9,500 to $18,500, with architectural shingle upgrades adding $1,500 to $3,000.
When you hire us, you get a written line-item proposal that separates the known work from the probable work. If we anticipate decking replacement, it’s priced as a line item before we start. If we find something unexpected, we photograph it, show you, and get written approval before we spend a dollar more than the contract says.
Full Tear-Off and Re-Sheathing
South Whittier homes with original skip sheathing, meaning 1×6 boards spaced apart rather than solid plywood, can’t support modern shingle warranties. We remove it, install code-compliant plywood or OSB, and re-nail it to the rafters. This happens on roughly half the 1950s and 1960s homes we replace in South Whittier.
Permits and Code Compliance
Los Angeles County requires permits for roof replacement, and we pull them. A permit triggers an inspection of the sheathing, fastener schedule, and underlayment, which is exactly what protects you when a 60-year-old roof gets opened up and the decking turns out to be shot. We schedule and pass the inspection, and the final sign-off is yours to keep.
Asphalt Shingle Roof Replacement in South Whittier
Asphalt shingle roof replacement is the most common job in South Whittier simply because composition shingles are what these tract homes were built with, and most are two to three decades past their expected lifespan. On a typical 1,200 to 1,600 square foot ranch-style home, an asphalt shingle replacement runs $8,000 to $14,000 for standard three-tab, with architectural shingles running $10,500 to $17,000. South Whittier’s sun exposure matters more than most homeowners realize: south-facing slopes near the San Gabriel River corridor take reflected heat that strips granules years earlier than the shaded north slope.
We’re not vague about materials because shingle grade is the biggest cost driver after decking. We install GAF, CertainTeed, and Owens Corning products, and we write the exact shingle model, color, and warranty into your contract. You don’t get “a comparable shingle” at install day.
Architectural vs. Three-Tab
Architectural shingles are thicker, laminated, and rated for higher wind speeds than three-tab. Given the Santa Ana gusts that hit South Whittier each fall, we recommend architectural shingles on most replacements. The cost difference is modest, but the wind resistance and warranty length are not.
Roof Decking Replacement
Decking replacement is priced per sheet and written into the contract as a contingency line item. On South Whittier homes with original dimensional lumber decking, we often find water damage around valleys, chimneys, and plumbing vent pipes that never showed a visible leak from inside. Replacing those sheets before new underlayment goes down is the difference between a roof that lasts 30 years and one that fails at the seams.
Trusted Brands We Service in South Whittier
We install and repair roofs using manufacturer-backed materials from GAF, CertainTeed, and Owens Corning. That means your shingle warranty is backed by the manufacturer, not just by us. For South Whittier homes with low-slope sections or flat patio covers, we also work with GAF’s TPO and modified bitumen lines. Because we order material per job from our Los Angeles supply yard, South Whittier homeowners aren’t waiting on special-order shingles to arrive from out of state. Your shingles are on site the morning we start.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in South Whittier Homes
- Crumbling organic felt underlayment. Homes built in the 1960s often used organic felt, which breaks down into papery flakes after 50 years. We discover this during tear-off, and it’s the number one reason a “simple re-shingle” becomes a full decking and underlayment replacement.
- Premature granule loss on south-facing slopes. The reflected heat off the San Gabriel River corridor accelerates shingle wear on south faces. We see bare asphalt showing through on homes that shouldn’t need a re-roof for another 10 years.
- Rot at valleys and penetrations. Original skip sheathing left gaps that collect condensation and trap moisture around chimneys, skylights, and plumbing vents. The shingles look fine from the street, but the plywood underneath is soft and failed.
- Low-slope composition failures. South Whittier’s 1970s tract homes often have slopes too shallow for standard shingle installation. Water backs up, leaks through the shingle seams, and the roof never performs, even when new.
Pricing for Roof Replacement in South Whittier, CA
Here’s what a roof replacement in South Whittier actually costs in 2025. A standard three-tab asphalt shingle replacement on a 1,200 square foot home runs $8,000 to $12,000. The same home with architectural shingles runs $10,500 to $15,000. Full decking replacement adds $2,500 to $4,500 depending on how many sheets have failed. Flat roof sections using TPO or modified bitumen run $7 to $10 per square foot. These are written, line-item ranges, not vague estimates. Your free estimate comes with the same detail before you sign anything. Call (831) 777-6412 and we’ll walk the roof, photograph what we find, and price it honestly.
We Also Serve Cities Near South Whittier
Our Roof Replacement crews cover South Whittier and the surrounding area daily. We also serve West Covina, Whittier, Montebello, and Hacienda Heights. If you’re in one of those cities, the same pricing, written estimate, and 365-Day Done Right Promise apply. Learn more about our work in South Whittier on our local page.
Serving South Whittier, CA - Our Local Coverage Area
We’re based in the South Whittier 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 South Whittier
We remove all of it, every square foot, down to the decking. Organic felt can’t be patched or partially reused, and leaving any of it compromises the new underlayment’s seal. We inspect the decking underneath, replace any damaged boards, and install a full synthetic underlayment plus ice and water shield in the valleys and around penetrations. That’s included in the replacement, not an upgrade you have to ask for. Call (831) 777-6412 for a written estimate that covers this explicitly.
Decking upgrades are usually required if the original boards have water damage or gaps that don’t meet current code. Insulation is a separate question, and most South Whittier homes were under-insulated at the time they were built. We’ll recommend attic insulation if we see it, and we’ll price it separately. The roof replacement itself can proceed regardless of insulation, but any decking replacement that’s needed is written into the contract before we begin. Call (831) 777-6412 to schedule a free inspection.
Architectural asphalt shingles with UV-stabilized granules, like GAF Timberline HDZ or CertainTeed Landmark, hold up best on those south-facing slopes. The laminated construction reflects more heat than three-tab, and the granule adhesion is stronger. We also recommend light-to-medium shingle colors on south faces to reduce heat absorption. Avoid dark shingles on that slope, they’ll cook. Call (831) 777-6412 and we’ll walk the roof with you and explain what we’re seeing.
We start with a proper starter strip, six nails per shingle on the high-wind zones, and enhanced sealing at the eaves and rakes. The real key is sealing the shingles to the starter course and using the manufacturer’s required nailing pattern. We also inspect and replace any loose or missing flashing before the new shingles go on, because that’s what the wind grabs first. Every replacement includes wind-resistance verification up to the shingle’s rated speed. Call (831) 777-6412 for a detailed write-up of our wind mitigation methods.
We replace every damaged board before the new underlayment goes down. Dimensional lumber decking, typically 1×6 tongue-and-groove, can rot around valleys, skylights, and old satellite dish mounts. We sheet over the repaired decking with plywood or OSB to give you a solid, smooth nailing surface. The replacement boards and sheathing are line items in your written estimate, not surprises. Call (831) 777-6412 to have your decking inspected for free.
If you’re ready to price a roof replacement in South Whittier, we’ll give you a written, line-item estimate before you commit to anything. No pressure, no vague numbers. Call (831) 777-6412 and ask for Dylan. We’ll schedule the inspection, photograph the roof, and send you the estimate the same day.
Written by Dylan Pace, Owner at Crestview Roofing, serving South Whittier since 2000.