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 Glendora
Roof replacement in Glendora typically runs $9,500 – $18,000 for a standard asphalt shingle tear-off on a 1,500 – 2,200 sq ft home, with architectural shingles landing in the $11,000 – $16,000 range and full Class A fire-rated assemblies at the higher end. We’re Orange County Roofing Co, and we’ve replaced enough roofs along the 210 corridor and up toward the foothills to know what Glendora homes actually need. Call (866) 942-4187 for a free inspection and line-item estimate that accounts for your specific slope, decking condition, and fire-zone requirements. We know Glendora’s housing stock well, and we’ll tell you straight what your roof does and doesn’t need.
Why Orange County Roofing Co Is Glendora’s Preferred Roof Replacement Company
Glendora homeowners have a specific set of roofing problems, and we see them every week. The homes off Route 66 and up Glendora Avenue date to the 1950s and 60s when builders used basic three-tab shingles over plank decking, and decades of San Gabriel Valley sun have done predictable damage. Our team has worked throughout 91740 and 91741 long enough to know the difference between a roof that needs simple replacement and one hiding framing rot or failed underlayment that a cheap bid will miss until it’s too late.
We source from seven major manufacturers, GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means we recommend the right product for the slope and exposure, not the one with the fattest margin. Because we handle inspection, repair, and full replacement under one roof, you’re not bouncing between three companies to figure out what’s wrong. Kurt Hensley built our process around honest material comparisons and written change orders, and that approach resonates with Glendora customers who want facts, not pressure.
When you call us for Roof Replacement in Glendora, you get a straight answer about whether you need a full tear-off or a targeted repair. We don’t sell replacements that aren’t needed.
Styles & brands we work with
New Roof Installation in Glendora
New roof installation in Glendora usually happens when a home has reached the end of its existing roof’s service life, after a sale inspection flags systemic failure, or when a homeowner wants to upgrade to a Class A fire-rated system before the next Santa Ana season. A full tear-off and new asphalt shingle installation on a typical Glendora ranch runs $10,500 – $17,000, with material upgrades like architectural shingles, improved underlayment, and ember-resistant vents adding $2,500 – $5,500 depending on the size of the roof. Every new installation includes a tear-off to bare decking so we can inspect what’s underneath before anything goes back on.
Tear-Off and Deck Inspection
We remove the old shingles, felt, and flashing completely. On Glendora homes built before 1980, we regularly find sheathing that looked fine from the attic but has dry rot at the eaves or around plumbing penetrations. We show you what we find before we proceed, and any framing or decking replacement is documented in a written change order with its own price, no vague allowances.
Class A Fire-Rated Assemblies
Homes in the 91741 ZIP, especially the neighborhoods north of Foothill Boulevard, sit in the wildland-urban interface where Glendora fire codes push toward Class A assemblies. A Class A assembly uses fire-resistant underlayment, ember-proof vents, and rated shingles that resist ignition from wind-driven embers. We install GAF and other manufacturer systems that meet this standard, and we handle the permit and inspection requirements that come with it.
Reroofing in Glendora
Reroofing in Glendora means installing a new shingle layer over an existing one, and it’s an option we discuss honestly with homeowners because it isn’t right for every house. Reroofing costs less upfront, typically $7,500 – $11,000 for a standard Glendora home, because you skip the tear-off labor and disposal. But we only recommend it when the existing roof has a single layer of shingles, the decking is sound, and there’s no evidence of trapped moisture or structural sag. On most mid-century Glendora homes, the old roof has already failed at the decking level, which makes a full tear-off the better long-term choice.
When Reroofing Makes Sense
A reroof can work on newer homes in the 91740 ZIP where the original three-tab roof is still in flat, dry condition and the homeowner wants a fresh layer plus upgraded shingles without the cost of tearing off. We inspect the decking from both the attic and the surface before we agree to reroof, because trapping a wet or compromised deck under new shingles is how you end up with a roof that fails in five years.
Why Most Glendora Homes Need a Tear-Off
The intense UV and Santa Ana wind cycles that hit Glendora’s south- and west-facing slopes granule-starve shingles and bake out the underlayment. By the time the roof is visibly failing, the decking at the eaves, valleys, and ridge has often started to soften. Covering that up with a reroof hides the problem. We tell you when a reroof is safe and when it’s a false economy.
Trusted Brands We Service in Glendora
We install and service roofing systems from GAF, Atlas, and Tamko for Glendora homeowners, and we stock matching components locally so we’re not waiting on shipments from the Inland Empire when your project is mid-tear. Each brand offers different warranty tiers and panel profiles, and we’ll walk you through the real differences, coverage length, transferable terms, wind ratings, and fire ratings, so you’re choosing based on what your foothill-edge home actually faces. Roof Replacement in Glendora doesn’t require brand loyalty. It requires the right assembly for your slope, exposure, and local code.
Common Roof Replacement Problems We See in Glendora Homes
- Wind-scoured, granule-starved slopes. South- and west-facing roof planes in Glendora bake under summer UV and take the brunt of Santa Ana winds from the canyons. Granules end up in the gutters, the shingle matting starts to show, and leaks follow within one or two wet seasons. The fix is a full replacement with a shingle rated for high wind and UV, not a patched repair.
- Dry rot at fascia and soffit. Glendora’s seasonal runoff from foothill storms plus long dry spells leaves older wood fascia softened and punky. We find this on the majority of pre-1980 tear-offs, and it has to be repaired before new drip edge and gutters can be installed correctly.
- Failed underlayment at valleys and penetrations. The thermal cycling between hot days and cool foothill nights is hard on roofing felt and flashing. On homes near the foothills, we frequently find underlayment that crumbles when touched and flashing that has pulled away from pipe boots and chimneys. A new roof isn’t just shingles; it’s a full water-shedding system.
- Outdated decking that doesn’t meet current shear requirements. Many Glendora homes have spaced plank or 3/8-inch plywood decking that doesn’t meet today’s nailing standards for high-wind zones. When we tear off, we sister or replace decking as needed and document the work in writing before we proceed. That’s the honest way to handle what’s behind the shingles.
See the difference
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After
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AfterPricing for Roof Replacement in Glendora, CA
A full asphalt shingle tear-off and replacement on a standard Glendora home runs $9,500 – $18,000. Architectural shingles add about $1,500 – $3,000 over three-tab. If your home needs a Class A fire-rated assembly with ember-resistant vents and upgraded underlayment, expect the higher end. Flat roof sections over patios and additions run $12 – $18 per square foot. Roof decking replacement, typically $2.50 – $3.50 per square foot, plus any fascia and soffit repair, is priced separately and shown in your line-item estimate before work starts. Call (866) 942-4187 and we’ll schedule a free inspection and give you an honest number.
We Also Serve Cities Near Glendora
Our crews work throughout the San Gabriel Valley foothills, and we regularly handle roof replacements in Azusa, Citrus, Covina, and Irwindale. Whether your home is a mid-century ranch off Route 66 or a larger foothill property with mixed slopes and tile sections, our Roof Replacement service covers the full scope. Glendora is home base for many of our repeat customers, and we’re familiar with every area we serve.
Serving Glendora, CA — Our Local Coverage Area
We’re based in the Glendora 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 Glendora
If your home is in the 91741 ZIP, especially the foothill-edge neighborhoods north of Foothill Boulevard, then yes, you likely need a Class A fire-rated assembly to meet Glendora’s fire-zone requirements. Class A means the roof system, shingles, underlayment, and vents, resists flame spread and ember penetration as a complete unit. Homes farther south and west in 91740 may not be required to upgrade, but many owners choose Class A materials anyway for the added protection. Call (866) 942-4187 and we’ll check your property against the current map and tell you exactly what’s required.
We inspect the decking from the attic and the roof surface before we finalize your estimate, and we write a decking repair allowance into the contract when the home’s age or condition suggests rot is likely. During tear-off, if we find damage that wasn’t visible before, we photograph it, show you, and give you a written change order with a specific price before we proceed. Kurt Hensley’s rule is no surprise invoices, no vague allowances, and no work starts behind your back. Most Glendora homes need some decking or fascia work, so we plan for it rather than pretending it won’t happen.
We install and service roofing systems from GAF, Atlas, and Tamko among others, and we stock the components locally so your job doesn’t stall waiting on parts. The brand matters less than the assembly, and we’ll recommend a specific product based on your slope, exposure to Santa Ana winds, and whether your home sits in a fire-rated zone. We carry seven major brands, so you choose the roof that fits your home and budget, not ours.
Santa Ana wind events hit Glendora’s south- and west-facing slopes hardest, especially in the foothill-edge neighborhoods where canyons funnel the wind. Over time, that wind scours granules off shingles, lifts ridge caps, and works flashing loose at valleys and chimneys. A roof replacement in Glendora should use shingles rated for high wind uplift, and the nailing pattern and underlayment should be installed to withstand the next wind season. Call (866) 942-4187 and we’ll inspect your existing roof for wind damage and tell you what replacement options hold up best.
Yes. Much of Glendora’s housing stock mixes moderate-slope shingle roofs over the main house with flat or low-slope sections over patios, additions, and porches, and some foothill homes have tile sections along with shingle. We inspect every plane separately, because the underlayment, flashing, and drainage details differ on each. A tile-to-shingle transition is a classic leak point, and we replace the metal flashing and water-shedding details there rather than leaving old material in place. We’ll give you one line-item estimate that covers the whole roof system, every slope and section.
What We Find When We Open Up a Glendora Roof
Opening up a mid-century Glendora home’s roof is rarely a clean, straightforward tear-off. We recently replaced a roof on a 1950s ranch-style home off Glendora Avenue near the foothills, where the south-facing slopes had wind-scoured, granule-starved architectural shingles. When we tore off the old roof, we found dry-rotted fascia and failed underlayment around the valleys, plus outdated decking that needed sistering. We installed a GAF Class A fire-rated system with ice and water shield in the valleys, new drip edge, and ridge vent, and the homeowner got a written change order for the framing repairs before we proceeded. That’s the difference between a crew that cuts corners and one that understands Glendora’s housing stock.
Glendora’s wildland-urban interface and aging mid-century housing mean a roof replacement here often turns up outdated framing, failed waterproofing, and code upgrades that a permit triggers once walls are open. We handle it with a clear, written process: inspection first, allowances written into the contract, and any surprise priced and approved in writing before we touch it. No vague line items. No end-of-job surprise invoices.
Call Orange County Roofing Co for Your Glendora Roof Replacement
If your roof is showing its age, granule-starved slopes, curling shingles, leaks at the valleys, or failed flashing around the chimney, we’ll inspect it and tell you exactly what it needs. No pressure, no brand push. Just a straight answer, a line-item estimate, and work done right the first time. Call (866) 942-4187 to schedule your free inspection and estimate today.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Glendora since the company’s founding.