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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 Covina
Roof replacement in Covina typically runs $9,800 to $18,500 for a full tear-off on a standard ranch-style home, with most jobs completed in 5 to 10 working days once materials arrive. That’s the real number, not a teaser. Our crews work Covina neighborhoods from the 91722 flats near downtown to the 91724 hills off East Covina Boulevard weekly, so we know what these roofs look like when they come off. Call (866) 942-4187 for a free estimate with honest material comparisons, not a sales script.
Why Orange County Roofing Co Is Covina’s Preferred Roof Replacement Company
Covina homeowners call us because we don’t show up with one brand and a quota. Kurt Hensley built this company around carrying seven major manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – so the recommendation matches your roof, not our margin. On a 1950s ranch in Covina, that usually means talking honestly about whether an architectural shingle like GAF Timberline earns its cost over a three-tab, or whether your flat section needs a membrane system instead of shingles at all.
We’ve torn off tar-and-gravel roofs on East Covina Boulevard, replaced wind-lifted shingle fields in Charter Oak, and rebuilt low-slope membranes on commercial buildings near downtown Covina. The pattern is consistent: these homes were built well, but the roofing knowledge of 1956 isn’t the building code of 2026. Our inspection reports tell Covina homeowners exactly what’s under the surface, including the framing and waterproofing issues that only appear once the roof comes off.
Since we handle inspection, repair, and full replacement under one roof, you’re not calling a different contractor for each stage. That matters in Covina, where a roof that looks bad in summer can hide decking rot through winter. We write allowances into every quote for what we might find, so the price moves with your written approval, never as a surprise.
Styles & brands we work with
Roof Replacement Contractor in Covina
A Roof Replacement Contractor in Covina does more than swap shingles. On the ranch homes that define Covina’s east side, the job starts with tearing off whatever’s up there – often original built-up tar-and-gravel from the 1950s – and inspecting the decking underneath before anything new goes on. If the decking is soft from decades of ponding water or the rafter tails are charred from an old heater leak, we fix that first. Then we install the new underlayment, flashing, and roof system with the manufacturer’s specs in hand.
For a standard Covina ranch of 1,800 to 2,400 square feet, a full replacement with architectural shingles lands between $11,000 and $16,500. That includes tear-off, haul-away, new underlayment, flashing, and the shingles themselves. Steeper pitches, multiple layers of old roofing, or rotted decking push it higher. We document every added line item in writing before work proceeds.
Full Tear-Off vs. Overlay
Covina’s climate makes this decision for you in most cases. The original nailing patterns on 1950s and 1960s roofs don’t meet current wind uplift ratings, and the Santa Ana winds will find every loose shingle. We recommend full tear-offs for Covina homes built before 1980 because it’s the only way to inspect the decking and bring the nailing pattern up to code.
Roof Decking Replacement
When we open a Covina roof and find plywood delaminating from trapped moisture inside a flat section, the fix is cutting out the bad sheets and installing new CDX plywood to match the existing thickness. On one Covina ranch we found decking so soft from a slow valley leak that fasteners spun in place. That’s not something any overlay fixes. The cost for a single sheet runs $110-$150, and we photograph every sheet before it comes off the truck.
Asphalt Shingle Roof Replacement in Covina
Asphalt Shingle Roof Replacement in Covina covers most of the pitched roofs on post-war ranch homes, and it’s where your material choices get real. We stock and install Owens Corning, IKO, and Atlas shingles along with GAF, CertainTeed, and others, which means we can show you the actual shingle samples side by side rather than describing them over the phone. The differences matter: wind ratings, algae resistance, color availability, and the warranty tier behind each product.
For architectural shingles on a Covina home, expect $5.20 to $6.80 per square foot installed, including tear-off. Three-tab shingles run $4.30 to $5.10 per square foot, though fewer Covina homeowners choose them now because the architectural options carry better wind ratings for Santa Ana conditions. The total cost for a typical 22-to-28-square roof in Covina falls between $11,500 and $19,000.
Kurt Hensley’s rule is simple: put the right shingle on the right roof, and make the warranty paperwork match the manufacturer’s installation spec exactly. That’s how you get the full 30-year or 50-year coverage instead of a voided warranty over a missed nail line.
Architectural Shingles
Architectural shingles like GAF Timberline HDZ and Owens Corning Duration are the standard choice for Covina’s ranch homes. They carry higher wind ratings than three-tab, which matters when those fall Santa Anas come through Azusa Canyon and sweep across the 91723 foothills. They also hide minor decking irregularities better on older roofs.
Three-Tab Shingles
Older Covina roofs still show plenty of original three-tab shingles, and they worked for their era. But the original nailing was often six nails per shingle on a 1-inch strip, and that pattern fails modern uplift tests. When we match three-tab on outbuildings or garages, we re-nail to current code, not the 1965 pattern.
Trusted Brands We Service in Covina
Carrying seven brands means something practical for Covina customers: we can order the shingle that fits your roof’s wind zone, your street-facing aesthetic, and the warranty tier you’re willing to pay for, without switching contractors. Roof Replacement is our core trade, and we keep common color bundles and accessory lines ordered week-ahead for Covina jobs, which shortens lead times when your tear-off date hits.
Need an Owens Corning TruDefinition with a 130-mph wind rating because your house sits exposed on a north-facing slope? We’ll quote it. Want an IKO or Atlas to hit a lower price point without sacrificing code compliance? We’ll show you the numbers. GAF, CertainTeed, and Tamko round out the roster for comparisons. The point is you choose.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Covina Homes
- Original built-up tar-and-gravel flat roofs on 1950s east-side ranches. Covina homes on streets like East Covina Boulevard and the surrounding ranch tracts still carry these original systems. Summer heat bakes the tar until it cracks, then the first winter rain channels straight into the decking. A full replacement here means tearing off to the decking, never overlaying.
- Santa Ana wind damage on poorly nailed shingles. Wind coming through the San Gabriel Valley foothills and down through the 91724 corridor picks up shingles whose nailing patterns predate modern uplift codes. If the shingles aren’t glued and nailed to current standards, you’ll chase lost shingles every fall.
- Ponding water on low-slope sections after winter rains. Many Covina homes mix a pitched front roof with a low-slope addition or carport, and after rain, water pools in low spots for days. That standing water finds failed membrane seams and rots the decking beneath.
- Outdated wiring and undersized framing discovered during tear-off. Older Covina homes sometimes reveal knob-and-tube wiring runs through the attic framing, or rafter spans that don’t meet current load tables for the shingle weight plus a reroof. A permit-triggered inspection can require code upgrades before we close up the decking.
Pricing for Roof Replacement in Covina, CA
A full tear-off and architectural shingle replacement on a standard Covina ranch runs $11,500 to $19,000. Smaller homes or garage-only jobs can dip toward $9,000; larger homes with steep pitches, multiple roof planes, or significant decking replacement push past $20,000. Flat roof replacement in Covina, where we tear off the old tar-and-gravel and install a modern membrane system, runs $8 to $12 per square foot.
What moves the number? Decking condition, roof pitch, how many layers we’re tearing off, and whether your attic needs ventilation upgrades to meet current code. We write all of it into the quote as line items, with allowances for hidden decking or framing work. You approve every addition in writing before we touch it. Call (866) 942-4187 for a free estimate.
We Also Serve Cities Near Covina
Besides Covina, our crews handle roof replacement jobs in Irwindale, Azusa, Citrus, and West Covina on the same weekly schedule. If you’re just over the line in one of those neighborhoods, the process is the same: inspection first, written quote with allowances, then tear-off and replacement. See our dedicated page for Roof Replacement in Covina for the area-specific breakdown.
Serving Covina, CA — Our Local Coverage Area
We’re based in the Covina 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 Covina
Patching a flat roof in Covina usually fails because the underlying problem is failed seams across the whole membrane, not one hole. The summer heat opens the tar-and-gravel, winter water ponds, and every patch just redirects water to the next weak seam. The actual fix is a full tear-off to the decking, new seam tape or torch-down membrane, and proper positive drainage slope. Call (866) 942-4187 and we’ll inspect your roof and show you the seam failures before quoting anything.
Yes, a full roof replacement in Covina requires a building permit, and once the inspector opens the file, they apply current California Building Code to the structural and electrical conditions they can see. If your 1950s ranch has rafter spans that don’t meet today’s load tables or wiring that needs replacing, those items must be addressed before we close up. We handle the permit paperwork and the coordination; you get line-item approval on any code-required additions before work proceeds.
The answer is our inspection-first process. Before we quote, we inspect the attic and decking from the inside and above, and we write specific allowances into the contract for decking replacement, framing reinforcement, or wiring work that’s only discoverable after the roof comes off. On that 1956 ranch off East Covina Boulevard, we found charred rafter tails from an old water heater leak once the tar-and-gravel came off – our written allowance covered sistering the joists and installing new valley shielding before the new shingles went on. You approve every change in writing before we proceed, so the quote doesn’t balloon on its own.
For pitched roofs in Covina, architectural asphalt shingles with a high wind rating are the practical choice; we typically quote GAF Timberline HDZ or Owens Corning Duration because they carry 130-mph wind ratings and hold up under Santa Ana gusts that strip older three-tabs. For flat or low-slope sections on Covina’s ranch homes and older downtown buildings, a modern membrane system like TPO or torch-down outperforms the original tar-and-gravel in heat and ponding conditions. We’ll walk you through the material trade-offs before you commit to a line item.
A roofing square is 100 square feet, and a standard Covina ranch of 1,800 to 2,400 square feet of living space typically translates to 22 to 30 squares of roof area depending on overhangs, garages, and roof pitch. We measure by hand with a tape and a drone for the tight sections, because a quote that’s off by three squares changes your total by $1,500 to $2,000. We won’t give you a “ballpark” over the phone – our free estimate includes a measured roof plan for your exact home.
Call (866) 942-4187 to schedule your free roof replacement estimate in Covina. We’ll measure, inspect, and give you a written quote with line items and allowances, not a number that changes when the roof comes off. Kurt Hensley and the Orange County Roofing Co crew handle Covina roofs the same way we’d want our own done: opened up, documented, fixed right, and closed up with the manufacturer’s warranty intact.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Covina and the San Gabriel Valley.