Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
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Before
AfterFast, Reliable Roof Installation Across Citrus
Roof installation in Citrus comes with rules most homeowners never hear about until a bid lands. This unincorporated pocket of LA County sits against the San Gabriel foothills, inside a Very High Fire Hazard Severity Zone, which means LA County Public Works, not a city hall, reviews every permit and requires Class A fire-rated materials on every re-roof. Mercer Roofing has worked these exact requirements for years. We know which materials pass, how County inspections run, and what your postwar ranch roof really needs. Call (743) 200-8347 and we’ll walk you through it before you spend a dollar.
We’re not a call center. We send our own crews to Citrus, and every technician who knocks on your door arrives in a clean, marked uniform, photo ID badge visible, with their name and photo already sent to your phone before they pull up. That’s the Threshold Verified standard, and it’s non-negotiable on every job we run.
Why Mercer Roofing Is Citrus’s Preferred Roof Installation Company
Citrus homeowners tell us the same thing again and again: they want to know who’s coming to the house before the door opens. We built our entire process around that. When you book a roof installation with Mercer, you get the technician’s name and photo before the visit. You see a photo ID at the door and a written price before any work starts. No exceptions. That’s why families with young kids, people working from home, and older homeowners in Citrus call us back for their second and third roofs.
Our local reputation in Citrus is built on showing up when we say we will and putting every guarantee in writing. Every repair or installation carries a 365-Day Done Right Promise: if it’s not right within a year, we make it right at no charge. Every repair also includes a written guarantee and a free second visit if the repair fails. Those aren’t sales lines. They’re printed on the paperwork you sign.
Grant Whitlock, who leads our Citrus-area roofing work, built this team around one question: would I want this person opening my front door? The answer had better be yes every single time. That’s the standard we hold.
Crews serving Citrus are dispatched from the brand’s Los Angeles office, but the people on your roof are local. They know Citrus streets like Glendora Avenue and the ranch tracts east of Barranca. They know what Citrus’s summer heat does to shingle sealant and what Santa Ana winds do to ridge caps. That local knowledge means fewer surprises once tear-off starts, and that’s worth real money on a roof installation.
TPO Roofing Installation in Citrus
TPO roofing installation in Citrus handles the low-slope and flat sections that so many local ranch homes carry, built as attached patios, carports, or additions from the 1960s and 70s. Those roofs need a membrane that welds at the seams and holds up to 100°F thermal expansion without cracking. TPO does exactly that. A full TPO installation in Citrus typically runs $8,500 – $14,000 depending on size, insulation needs, and whether the existing deck is sound.
When TPO Makes Sense on a Citrus Ranch
Shingles do not belong on a roof with less than a 2:12 pitch. Water pools, seeps under shingle laps, and rots the decking beneath. When the slope is too low for shingles, TPO is the standard fix. For Citrus homeowners, that usually means the flat portion over a converted garage or a den addition. We match the TPO color and seam detail to the main shingle slope so the whole roof looks intentional, not patched.
What TPO Installation Actually Involves Here
On a Citrus TPO job, we pull any failing roof material first, inspect the decking for dry rot, and replace damaged sections before laying new insulation board and welding the membrane. The seams are heat-welded, not glued, which is what gives TPO its long service life. Because Citrus sits in a VHFHSZ, we also verify the assembly meets Class A requirements for the permit application going to LA County Public Works.
Shingle Roof in Citrus
A shingle roof in Citrus is the standard replacement for the composition shingle hillside ranches built from the late 1940s through the 1970s. After thermal cycling through decades of 100°F summers, those shingles crack, curl, and shed granules. A full shingle roof installation in Citrus generally runs $11,000 – $19,000 for a typical 1,400 – 2,000 square foot ranch, depending on shingle grade, tear-off, decking repairs, and whether Class A fire-rated requirements push you into a premium line.
Why Fastener Count and Nail Pattern Matter Here
Citrus sits at the inland end of the San Gabriel Valley. Santa Ana winds funnel down the foothill passes hard enough to lift improperly fastened shingles right off the deck. Shingle manufacturers publish uplift ratings tied to nail count and pattern. On a high-exposure Citrus roof, we install to a six-nail pattern when the shingle’s wind rating calls for it. That’s a difference you can feel in the estimate, and it’s one of the cheapest ways to buy decades of extra life.
Class A Fire-Rated Shingles Are Not Optional in Citrus
LA County Building & Safety enforces VHFHSZ material rules. Wood shake is banned outright. Any shingle product we quote for Citrus carries a Class A fire rating, which is why we lean on manufacturer lines like GAF, CertainTeed, and Owens Corning with verified Class A assemblies. If a contractor offers you a wood roof in Citrus, walk away. It will not pass County inspection, and you’ll pay twice.
Trusted Brands We Service in Citrus
We install and repair shingle systems from manufacturer-recognized brands including GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Citrus homes in the VHFHSZ, we often recommend GAF’s Class A-rated architectural lines for steep slopes and Tamko’s fire-rated offerings where budget matters. Because we work these brands weekly, we can bring material details straight into your Citrus estimate and order fast when the County’s Class A verification process needs documentation. No endless back-and-forth with suppliers.
Common Roof Installation Problems We See in Citrus Homes
- Undersized or spaced-out rafters on original ranch roofs. We regularly find 2×6 rafters set at 24 inches on center on 1960s Citrus homes, which don’t meet current uplift requirements once tear-off starts. The fix requires a framing upgrade documented in a change order before we proceed.
- Failed waterproofing on low-slope additions. The flat sections over old patios and garages were often roofed with roll material that’s now cracked and leaking at the seams. We replace those with TPO or modified bitumen, properly tied into the adjoining shingle slope.
- Fastener back-out and ridge-cap failure on 10 – 15-year-old roofs. Citrus’s summer heat loosens nails and breaks shingle sealant; Santa Ana winds finish the job by lifting and snapping ridge caps. Homeowners often think they need a whole new roof when a targeted re-secure and cap replacement would fix it, and we’ll tell you straight.
- Permit surprises from the County process. Citrus runs through LA County Public Works, not a city building department. Inspection scheduling follows County timelines, and Class A material verification is checked at inspection. Contractors unfamiliar with that process get hung up, and the homeowner waits.
Pricing for Roof Installation in Citrus, CA
Here’s what Citrus homeowners should budget for a full roof installation. A standard architectural shingle tear-off and replacement on a 1,400 – 2,000 square foot ranch runs $11,000 – $19,000. TPO installation for a flat or low-slope section runs $8,500 – $14,000. What moves the number: tear-off layers, decking rot replacement, rafter reinforcement if framing is undersized, Class A fire-rated material upgrades required by the VHFHSZ, and the six-nail high-wind pattern we use on exposed slopes. You’ll see every one of those items as a line on your written estimate. No allowances get spent without your written approval. Call (743) 200-8347 to schedule a free estimate and get actual numbers for your roof.
We Also Serve Cities Near Citrus
Beyond Citrus, our roof installation crews cover Los Angeles, San Diego, San Jose, and San Francisco. If your property sits anywhere near Citrus or these metro areas, the same written-price and photo-badge standard applies. Reach us at (743) 200-8347 from any of those areas and we’ll route the closest crew to you. You can also learn more on our Roof Installation page or see local details for Roof Installation in Citrus.
Serving Citrus, CA - Our Local Coverage Area
We’re based in the Citrus 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 Installation in Citrus
Citrus is an unincorporated community, so there is no city building department. Every roof installation permit is pulled through LA County Public Works, which also handles inspections. County timelines and interpretations apply, including VHFHSZ Class A material verification. Contractors who assume a city process often get inspections rejected. We prepare County-compliant submittals from day one. Call (743) 200-8347 if you’re unsure what your specific address triggers.
Yes, it does. Wood shake is banned outright, and every roof assembly must meet Class A fire-resistance requirements. That means your shingle, underlayment, and decking combination has to be a tested Class A assembly, and the County checks it at inspection. We quote only Class A-rated systems for Citrus addresses. Call (743) 200-8347 to go over what that means for your home’s roof.
A square is 100 square feet of roof surface. When a bid says “24 squares,” that’s 2,400 square feet of roof. Compare bids by checking that the squares match between contractors and that every allowance, tear-off layer, and material grade is listed as a line item. If a Citrus bid is missing the framing inspection or the Class A material line, it’s incomplete. Mercer puts every line in writing before work starts. Call (743) 200-8347 for a quote you can actually compare.
No, shingles do not belong on low-slope sections. Below a 2:12 pitch, water pools and works under shingle laps, which rots the deck underneath. For those flat sections common on Citrus ranches, we install TPO or modified bitumen instead. We’ll tie it into the shingle slope correctly. If a contractor tells you shingles are fine on a flat Citrus section, get a second opinion. Call (743) 200-8347 and we’ll assess it honestly.
We inspect first, write the added scope and price in a change order, and get your signature before we touch the extra work. On a 1960s ranch off Glendora Avenue in Citrus, our crew opened a low-slope section to install modified bitumen and found the original 2×6 rafters undersized and spaced at 24 inches, requiring a framing upgrade before we could set new underlayment. We wrote the added scope and price in a change order, got the homeowner’s signature, then completed the flat section with modified bitumen and the main slope with GAF architectural shingles, knowing the high Santa Ana wind exposure demands a six-nail pattern to hit the shingle’s rated uplift resistance. No surprise ever shows up on an invoice without a signature first. Call (743) 200-8347 to schedule your free estimate.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Citrus since the company’s founding in 2000.