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 Whittier
Roof replacement in Whittier typically costs between $14,000 and $38,000 for a full tear-off and new architectural shingle installation on a standard ranch-style home, with hillside properties in Friendly Hills and similar areas often running higher due to increased safety requirements and equipment access. Most Whittier homes were built between the 1940s and 1980s, and many still have their original three-tab or wood shake roofs that have now outlived their useful life. Our crew knows Whittier’s hillside lot challenges, fire zone requirements, and the way Santa Ana winds tear at exposed slopes. Call (831) 777-6412 and we’ll give you a written price before any work starts.
Why Crestview Roofing Co West Covina Is Whittier’s Preferred Roof Replacement Company
Whittier homeowners call us because we do something most roofers won’t: we put the price in writing before the first shingle comes off. Dylan Pace runs our team with a simple rule – the number on the estimate is the number on the invoice. No change orders, no “we found rot so it’s another $4,000” surprises at the door. If we find hidden decking damage during tear-off, we document it with photos, show you exactly what’s happening, and agree on any additional scope before we proceed.
Our crews work on Whittier’s hillside homes regularly. We know what Friendly Hills lots require for fire-rated materials, what Michigan Park ranch houses need for proper attic ventilation, and how the sun hits south-facing slopes in ways that crack cheap shingles within a decade. Every estimate includes before-and-after photo documentation, a live arrival time you can actually track, and a digital invoice sent right to your phone. That’s The Relay Visibility Guarantee, and it’s included on every job we do.
We answer calls 24/7 with a live person. Not a voicemail loop, not a call center script. If your roof starts leaking during a Whittier winter storm at 2 a.m., someone picks up and schedules a real visit.
Styles & brands we work with
Reroofing in Whittier
Reroofing in Whittier means layering a second roof over an existing, structurally sound one. While it saves on tear-off labor, Whittier homes built on hillside lots in the 1960s-1980s often fail the structural screening because the original underlayment has already degraded from decades of heat cycling. When our crew inspects a reroofing candidate, we check the decking condition first. If the underlayment is shot and the decking has water damage, a full tear-off is the honest recommendation, not the cheaper band-aid.
When Reroofing Works
A single-layer roof with solid decking and no signs of rot is a good reroofing candidate. In Whittier’s flatter neighborhoods north of Whittier Boulevard, where lots are less exposed to Santa Ana wind shear, reroofing over one layer of three-tab shingles usually runs $11,000 to $19,000 depending on square footage.
When It Falls Short
Hillside homes with original wood shake roofs almost never qualify for reroofing. The shake underlayment fails first, and by the time the roof looks bad from the street, the decking underneath is usually soft in multiple spots. We’ve seen this repeatedly on homes above Colima Road and in the Friendly Hills area.
Flat Roof Replacement in Whittier
Flat roof replacement in Whittier typically runs $13,000 to $28,000 depending on square footage, existing roof condition, and whether we’re working on a detached garage, an addition on a 1950s Spanish Colonial, or a full low-slope section of a ranch house. Flat roofs on older Whittier homes often hide failed drains and ponding water issues that only show up after the first heavy rain season. We replace the membrane, repair any rotted decking, and reset the drainage plane so water actually leaves the roof instead of sitting on it.
Low-Slope Systems We Use
On most Whittier flat roofs we install modified bitumen or TPO systems. Both handle direct sun well, but TPO’s white reflective surface makes it the better choice for flat sections that bake under Whittier’s summer heat. Modified bitumen costs a bit less upfront and holds up well on smaller garage roofs.
Common Flat Roof Problems
We regularly find failed seams around vent pipes and poorly sloped scuppers on older flat roofs in Whittier’s Michigan Park and Uptown areas. These shortcuts from original construction are the two biggest causes of flat roof leaks we see before age-related membrane failure.
Trusted Brands We Service in Whittier
We install and repair GAF, CertainTeed, and Owens Corning systems across Whittier. These brands each offer excellent wind ratings and Class A fire ratings, both of which matter on Whittier’s hillside exposures. For customers who want the best-looking shadow-line architectural shingle, we often recommend GAF Timberline HDZ or CertainTeed Landmark. We keep common flashing and hip/ridge materials stocked locally so Whittier jobs don’t stall waiting on parts from a warehouse across the county.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Whittier Homes
- Cracked three-tab shingles on south-facing slopes. Whittier’s hot, dry summers and cool, wet winters force shingles to expand and contract constantly. On south-facing exposures, the sun stress causes small cracks across the shingle surface within 12-15 years, and among the older three-tab roofs we see, many are already past that mark.
- Lifted flashing and torn underlayment after Santa Ana wind events. Hillside homes in Friendly Hills and along Whittier’s eastern edge are exposed to sustained wind bursts that flat neighborhoods never feel. After major Santa Ana events in October, we get calls for missing shingles, flapping underlayment, and flashing peeled back around chimneys and vents.
- Hidden decking rot under old wood shake roofs. The shake roofs on 1960s and 1970s Whittier homes often have original asphalt felt underlayment that has broken down over time. The shakes may look acceptable from the ground, but the decking underneath is wicking moisture and going soft. We find this on nearly every wood shake tear-off we complete in Whittier.
- Ponding water on low-slope and flat roof additions. Many mid-century Whittier homes have flat-roof additions and carports built with nearly zero slope. Over time, the slight sag compounds and water sits for days, accelerating membrane failure around drains and seams.
Pricing for Roof Replacement in Whittier, CA
Here’s what Whittier homeowners can expect to pay, based on the size of the roof and the condition of the existing roof deck. A full tear-off and architectural shingle replacement on a 1,500-square-foot ranch near Michigan Park typically lands in the $14,000-$22,000 range. A 2,400-square-foot hillside home in Friendly Hills with Class A fire-rated materials, new synthetic underlayment, and reinforced eaves usually runs $24,000-$38,000. Reroofing where structurally approved brings the cost down to $11,000-$19,000 for a typical Whittier home, but the existing roof must pass our decking inspection first.
What actually moves the price is decking replacement – if your old roof has even 15% rot, plywood replacement alone can add $1,800-$3,400 depending on the sections affected. We include this assessment in our free estimate, and we walk you through every layer of the quote line by line. Call (831) 777-6412 to schedule yours.
We Also Serve Cities Near Whittier
Our team handles Roof Replacement projects throughout Whittier and the surrounding area. If you’re in Hacienda Heights, Montebello, West Covina, or Rowland Heights, we can schedule a free estimate the same way we do in Whittier: a written price, a live arrival time, and photo documentation of everything we find.
Serving Whittier, CA - Our Local Coverage Area
We’re based in the 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 Whittier
Yes. Whittier hillside properties located in unincorporated Los Angeles County fall under county permitting, which means a building permit is required for roof replacement. The county will inspect the underlayment before shingles go on, and they enforce the fire-resistant material requirements for homes in the Hillside Management Ordinance zones and Wildfire Urban Interface areas. Our team handles the permit application, schedules the inspections, and calls you with the full breakdown before you sign anything.
Homes in Friendly Hills that sit near the Puente Hills open space are typically in a designated fire hazard severity zone and must use Class A fire-rated roofing materials. That rules out standard three-tab asphalt shingles in many cases and pushes homeowners toward architectural shingles, stone-coated steel, or other Class A systems. We also upgrade the underlayment to a fire-resistant synthetic product and add metal drip edges to protect the eaves from ember exposure. This adds between $1,500 and $4,000 to a standard Whittier roof replacement depending on the size of the home. Call (831) 777-6412 and we’ll verify exactly what your address requires.
On a typical 1,600-square-foot Whittier ranch, reroofing runs about $3,000-$5,500 less than a full tear-off and replacement. The savings come from skipping the tear-off labor and the dump fees, which are significant in Los Angeles County. But reroofing also shortens the eventual lifespan of your new roof by 5-10 years because the heat from a second layer accelerates shingle aging. We’ll tell you if your existing roof qualifies for reroofing – and if it does not, we’ll show you the decking test results so you can see why.
Expect 25-32 years from a quality architectural shingle roof in Whittier. That’s about 5 years less than the same roof installed in a cooler coastal city because the heat loading on Whittier hillside lots, especially the south- and west-facing slopes, degrades the asphalt binder in the shingle mat faster. Proper attic ventilation, good underlayment, and professional installation can extend that toward the upper end. GAF and CertainTeed both offer wind warranties that matter here, and we register every roof system with the manufacturer so the coverage is active from day one.
Yes. Many original 1920s-1950s Spanish Colonial homes in Whittier have flat or nearly flat roof sections over the main structure, the garage, or an enclosed patio. These sections are usually not true “dead flat” roofs – they have a slight slope to drains or scuppers. We remove the old membrane and any failing decking, install a clean roof plane, and finish with a modern TPO or modified bitumen system that handles Whittier’s UV load. If the home has clay tile over a low-slope section that’s leaking, we can isolate and replace just the leaking membrane without tearing out sound tile. Estimates on flat roof sections are free; call (831) 777-6412 to book a measurement.
We serve every Whittier neighborhood, from Uptown and Leffingwell Ranch to Friendly Hills and Michigan Park. If your roof is old, cracked, leaking, or you just want to know what replacement will cost before you commit, pick up the phone. You’ll get a live person, a straight answer, and a written price before any work starts.
Written by Dylan Pace, Owner at Crestview Roofing Co West Covina, serving Whittier through The Relay Visibility Guarantee.