Metal roofing
Architectural shingles
Tile roofing
GAF
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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 runs $9,500 to $22,000 depending on square footage, pitch, the number of existing layers, and whether any decking needs to be rebuilt. Most straightforward tear-offs here wrap up in three to five working days, with flat or low-slope patio sections adding a day or two. We serve all Whittier ZIPs: 90605, 90606, 90607, and 90608. Call (866) 942-4187 and we’ll give you an in-person price the same week.
Whittier’s mix of 1920s Uptown bungalows and 1950s tract homes means no two roof replacements here are really the same job. The original wood skip sheathing on a Craftsman near Whittier Boulevard behaves nothing like the plywood deck on a stucco rancher off Lambert Road. That’s exactly why Kurt Hensley built Orange County Roofing Co around a material-agnostic, inspection-first process. We don’t show up to sell you one brand. We show up to see what your roof actually needs, then walk you through the right options from the seven manufacturers we carry.
Why Orange County Roofing Co Is Whittier’s Preferred Roof Replacement Company
Whittier homeowners call us because we’ll give a straight answer about whether a repair makes sense or a full replacement is the honest move. We carry GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means our recommendation isn’t shaped by which brand gives us the best margin, it’s shaped by what fits your house, your exposure, and your budget.
We’re in and out of Whittier consistently, so response time from first call to on-site estimate is usually two to four business days, depending on the week. If you’ve got a leaking roof and need eyes on it sooner, tell the office and we’ll work around our schedule to get there.
Our Whittier customers keep our calendars full without us running paid ads. Neighbors pass our name down the street. That’s the reputation that matters. Kurt Hensley, our owner, has built the company so every roof gets a written, line-item quote before any work starts. No verbal ballparks that move once the tear-off begins. No change orders that show up out of nowhere.
Styles & brands we work with






Flat Roof Replacement in Whittier
Flat Roof Replacement in Whittier often comes up on the patio and addition sections of 1950s-60s tract homes, and on older flat-fascia bungalows near Uptown. These sections pond water when rare heavy rain hits because they were never re-pitched when the main roof got its second or third layer. Most Whittier flat sections run 300 to 800 square feet and cost $3,800 to $9,000 to replace properly, including new membrane, re-flashed edges, and corrected drainage.
What We Do
We strip the old membrane and examine what’s underneath. On many Whittier flat sections, the original drains are undersized and the sheathing has softened at the low points. We re-pitch or add tapered insulation to make water move, then set the new membrane. The material choice depends on the surrounding main roof and how much sun that section takes.
When It Makes Sense
Flat roof replacement should happen when the membrane is beyond patching, when drains no longer clear debris, or when a leak has already wet the sheathing. Whittier’s UV load dries out membrane seams fast, and once water gets under the covering, it spreads along the deck before you see any stain inside.
Roof Installation in Whittier
Roof Installation in Whittier means a complete re-roof, not retrofitting over what’s already there. On the 1920s bungalows west of Greenleaf, that usually starts with tearing off two or three layers of old composition shingle, because the original 1×6 skip sheathing underneath was never meant to carry that weight. A full new installation on a 1,200-to-2,200-square-foot Whittier home typically lands between $11,000 and $21,500, depending on how much sheathing has to be replaced and what material you choose.
Installing Over vs. Tearing Off
We rarely install over an existing layer in Whittier. The weight stacks up, the existing deck may be soft, and the final roof line looks uneven on curb appeal. We’ll tear off to the deck, inspect the sheathing, and only then commit to a material list.
New Construction and Additions
If you’re building out a detached ADU, workshop, or an addition in Whittier, Roof Installation should be scoped as its own line item, not rolled into the main roof price. Outbuildings have their own ventilation, drip edge, and tie-in details at the main wall. We quote them separately so you can see what you’re actually paying for.
Trusted Brands We Service in Whittier
We install Atlas, Tamko, Boral, and GAF in Whittier, among the seven brands we carry. That’s one of the broadest supplier relationships in residential roofing, and it matters because Whittier homes range from historic Craftsman to mid-century ranch to flat-roof patio sections. You don’t choose a brand first. You choose the profile, warranty tier, and price bracket that fits your house, and we’ll match you to the product line that owns that space. We hold product literature and warranty documentation for each manufacturer, so you can compare them side by side before writing a check.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Whittier Homes
- Third-layer composition shingles hiding soft decking. When two or three layers are already on, you can’t see failed sheathing beneath them. We make the call after tear-off, and our line-item quote tells you exactly what deck replacement costs if it comes up.
- Original skip sheathing on 1920s bungalows. Uptown Whittier and the streets near Whittier Boulevard have Craftsman homes with 1×6 boards and wide gaps. Modern underlayment bridges these, but the deck often needs replacement or at least a full ice and water shield pass.
- Ponding on low-slope patio roofs. The flat sections over patios and add-on family rooms in 90603 and 90604 trap water because drains were undersized from the start. Once the membrane ages, that water sits and rots the deck.
- Granule loss from UV exposure and tree debris. Whittier sits in the East San Gabriel Valley, so summers cook asphalt shingles. Add mature Uptown street trees dropping leaves and seed pods into clogged valleys, and you get premature granule loss exactly where water has to drain.
Pricing for Roof Replacement in Whittier, CA
A full tear-off and replacement on a standard 1,400-square-foot Whittier home ranges from roughly $10,500 to $19,000. Architectural shingles add $1,500 to $3,500 over a basic three-tab depending on the line and warranty tier. Flat patio sections run $4,000 to $8,500 as a separate scope. Roof decking replacement, when needed, adds $2.50 to $4.00 per square foot in Whittier, and we show you board-by-board what needs replacement once the old roof is off. The single biggest variable is sheathing condition, and that’s only knowable after tear-off. Call (866) 942-4187 for a free in-person estimate with a written scope.
We Also Serve Cities Near Whittier
Our Roof Replacement team regularly works in South Whittier, West Whittier-Los Nietos, East La Mirada, and Santa Fe Springs. The housing stock and code requirements in these areas overlap with Whittier, and we know the inspectors and the neighborhoods. Call us if you’re in one of these neighboring cities, and we’ll get you on the schedule.
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
If your home is within Whittier city limits, city permitting applies, and your roofing contractor must pull the permit and pass inspection. If your parcel sits in an unincorporated county pocket or acreage parcel, Los Angeles County permitting applies instead, and that can add time to the process. We handle either one. Tell us your address and we’ll confirm jurisdiction before the quote is finalized.
We price each structure as its own line item: house, shop, detached ADU, and any connecting breezeways. Acreage lots add material haul time and equipment access considerations, and some parcels have septic tank locations or well setbacks that we have to work around. We’ll walk the property and scope all of it before we hand you a number, so there are no surprises when the crew rolls up.
Yes, a replacement in the Uptown Whittier historic-preservation area often gets design review, which means the color, material, and profile of your new roof have to be approved by the city. We know which shingle profiles in our seven-brand lineup clear that review quickly and which ones cause delays. A few blocks east in the 1950s-60s tracts of 90603, that layer of scrutiny doesn’t apply.
We look at the slope of the land, the existing drainage patterns, and where water has been pooling around the foundation before we quote. An open lot sheds water differently than a tight urban parcel, and your new roof has to carry water away from the house, not dump it against the slab. If grading or downspout relocation is needed, we spell it out as its own line item.
Put both quotes side by side and check three things: whether the tear-off line item is identical, whether decking replacement is quoted per square foot or left out, and whether the warranty listed is the same tier from the same manufacturer. If one bid is $3,000 cheaper, it’s almost always because one of those line items is missing or under-scoped. We’ll walk you through what to look for, and we’re happy to explain our own line items against any competitor’s.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Whittier’s roofing needs through every season.