Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Covina
If you’re searching for roof replacement in Covina, here’s the straight answer: a full tear-off and re-roof on a typical 1950s-1970s ranch home in Covina runs between $11,500 and $19,800 for architectural asphalt shingles, with most jobs landing around $14,500-$16,000. That includes tearing off the old roof, replacing damaged decking, new underlayment, drip edge, ridge cap, and haul-away. We’re Tilehurst Roofing, a Kingswell family company founded in 2000, and we’ve seen enough Covina ranch roofs opened up to know exactly what’s hiding under those old shingles. Call (945) 303-9821 and we’ll come out, inspect the roof, and put a written price in your hands before any work starts.
We work all over Covina, from the tree-lined streets north of Badillo to the older bungalows near downtown and the tract homes east of the 57. Scheduling and dispatch coordinate from the brand’s Los Angeles office, and crews serve Covina locally, so when we give you a window, we show up in it.
Why Tilehurst Roofing Is Covina’s Preferred Roof Replacement Company
Covina homeowners have a specific frustration: they’ve called a roofer, gotten a verbal estimate, then watched the price climb once the shingles came off. That doesn’t happen with us. Roof Replacement with Tilehurst starts with a written price before any work starts, and the written guarantee is delivered before the crew leaves, not mailed later. If a repair fails inside the guarantee period, we return to correct it at no charge under the 365-Day Done Right Promise. That’s a full year of documented accountability on every job.
Every technician on a Covina roof is background-checked and uniformed, so you know exactly who is on your property. A live person answers our calls 24 hours a day, 7 days a week, including evenings and weekends. No voicemail, no callback queue, no waiting until Monday. And because we carry materials from seven leading manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – the shingle that goes on your home fits your roof and your budget, not just what happens to be loaded on the truck that morning. Greg Holloway, who leads Tilehurst Roofing, holds the Kingswell family standard on every estimate: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails.
Flat Roof Replacement in Covina
Flat Roof Replacement in Covina is a common need on the mid-century ranch homes and 1920s-1940s bungalows that make up so much of the city’s housing stock, particularly the low-slope room additions, porches, and carport sections built during the orange-grove-to-suburb conversion decades. A flat roof section on a Covina home typically costs between $4,800 and $8,400 to tear off and replace, depending on size, decking condition, and the membrane system chosen. If the flat section butts against a pitched shingle roof, we handle both scopes in one permit and one pass so flashing transitions are done correctly the first time.
Built-Up and Modified Bitumen Systems
Most original flat sections on Covina ranch homes are built-up roofs with gravel surfacing, or older torch-down modified bitumen. These systems dry out and crack under Covina’s sustained 100°F+ summer heat, especially where the roof holds standing water after winter rains. We inspect the decking underneath before quoting, because failed waterproofing under an old flat membrane often means rotted plywood or OSB that needs replacement, not just a recover.
Single-Ply Membrane Options
For newer flat sections, we install single-ply membranes like TPO or PVC with heat-welded seams. These handle Covina’s UV load better than older asphalt-based systems and reflect more heat back out of the structure. We price the membrane type specifically for your roof’s size and drainage pattern, and the written line-item quote shows exactly what’s included so nothing changes at the door.
Roof Installation in Covina
Roof Installation in Covina covers both new construction and full tear-off re-roofs, and on the city’s older homes it almost always means opening up something that hasn’t seen daylight since the Eisenhower administration. New shingle installation on a Covina ranch typically runs $9,800 to $17,200 for a standard single-story home, but that range assumes good decking underneath. On original 1950s-1970s tract homes, we frequently find the original 3/8-inch skip sheathing delaminated from decades of 150°F attic temperatures, which pushes the job into partial or full redecking – and we price that before we touch anything.
New Construction Roofing
For new construction in Covina, we work directly with the builder or homeowner from the framing stage forward. That means the roof gets the right underlayment, the right nailing pattern, and the right ventilation spec from the start, not retrofitted later. We install materials from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, so the shingle choice is a conversation, not a default.
Decking and Ventilation Upgrades
Here’s what opening up an older Covina home actually turns up: outdated sheathing, undersized original soffit vents, and framing that needs code upgrades once the permit triggers. We inspect first, write allowances into the contract, and any surprise is priced and approved in writing before we cut into it. That’s the Kingswell Way, and it’s why our customers don’t get phone calls asking for more money mid-job.
Trusted Brands We Service in Covina
We install and service shingle systems from seven major manufacturers, and on Covina homes we most often recommend GAF, Atlas, and CertainTeed for their high wind ratings and heat-stable granule adhesion. Boral and Tamko are also options when the architecture calls for a specific profile or color. Because we’re regularly on roofs across Covina, parts and materials for these brands are stocked locally and available on short notice, so a re-roof doesn’t stall waiting on a delivery truck from out of state. When you call (945) 303-9821, we’ll walk through which manufacturer’s system fits your home, your wind exposure, and your budget, then put it in writing.
Common Roof Replacement Problems We See in Covina Homes
After years of tearing off roofs across Covina, a few problems show up constantly. Here’s what we typically find on the city’s older ranch and bungalow stock:
- Undersized original soffit vents: The 1960s builders who framed Covina’s east-side subdivisions routinely installed too little intake ventilation. By the time a roof is 15 years old, the attic is running 150°F+ in summer, cooking the sheathing from below and turning a shingle swap into a decking replacement job.
- Santa Ana wind damage at ridge caps and step flashing: Hot, dry northeast winds funnel through the San Gabriel Valley mountain passes and hit Covina at 50 mph or more. We regularly find lifted ridge caps, pulled ridge vent fasteners, and failed step flashing on low-pitch ranch rooflines, especially on homes along the Badillo corridor and streets east of the 57.
- Failed waterproofing under old shingles: Water that gets past worn composition shingles doesn’t show itself right away. It soaks the decking, rots the fascia, and delaminates sheathing from below – hidden damage that only becomes visible after the tear-off starts.
- Heat-driven granule loss and thermal cracking: Covina’s inland San Gabriel Valley location means no marine layer to buffer the summer sun. 100-108°F surface temperatures on the roof accelerate granule loss and split older shingles far faster than homes in coastal LA County, which is why so many Covina ranch roofs need full replacement rather than repair by year 20.
Pricing for Roof Replacement in Covina, CA
Let’s talk real numbers. A full tear-off and architectural shingle re-roof on a standard Covina ranch home runs $11,500 to $19,800, with partial decking replacement adding $2 to $4 per square foot of affected area. Flat roof sections run $4,800 to $8,400. New construction roofing is priced by the bid, starting around $9,800 for a single-story home with standard framing. What moves the numbers in Covina specifically is the age of the sheathing – original 3/8-inch skip sheathing from the 1960s often needs full replacement with 7/16-inch OSB, and undersized soffit vents usually mean adding intake ventilation to meet current Title 24 standards. Every estimate is a written line-item quote. No allowances that balloon later. No change orders you didn’t approve in writing. Call (945) 303-9821 to schedule your free estimate.
We Also Serve Cities Near Covina
We provide Roof Replacement in Covina and the surrounding San Gabriel Valley cities, including Azusa, West Covina, Baldwin Park, and Glendora. If you’re in one of these communities and your ranch roof is showing its age, the same written price guarantee and 365-Day Done Right Promise apply. Call us and we’ll set up the inspection.
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
The shingles only tell half the story. Covina’s 1960s-era builders installed undersized soffit vents, so attics on older ranch homes routinely hit 150°F+ in summer. That heat cooks the plywood or skip sheathing from below, causing delamination and rot that you can’t see until the old roof is off. We price any decking replacement in writing and get your approval before we cut into it. Call (945) 303-9821 for an inspection and an exact quote.
A permitted roof replacement in Covina requires bringing attic ventilation up to current Title 24 standards and installing the correct nailing pattern for the shingle’s wind rating. On older ranch homes, that usually means adding intake ventilation to supplement the undersized original soffit vents. If the roof structure itself is compromised, additional engineering may be required. We pull all permits and handle the inspections, and any code-driven upgrade is included in your written estimate before work starts.
Covina sits in the path of Santa Ana winds that funnel through the San Gabriel Valley passes and regularly exceed 50 mph. For low-pitch ranch rooflines, we install architectural shingles rated to 130 mph with a six-nail pattern, plus a ridge vent sized to the attic volume so the ridge cap stays put. We also replace step flashing along walls and penetrations, which is where Santa Ana-driven wind and rain first find their way in. Call (945) 303-9821 and we’ll assess your specific wind exposure.
Yes, and we recommend it. Many Covina ranch homes and bungalows have a pitched main roof with a flat section over a porch, carport, or room addition. Doing both scopes in one permit means the flashing transitions between the shingle and flat systems are installed correctly, and you get one written price, one crew, and one guarantee period. Common flat systems include TPO and PVC single-ply membranes, priced by size and decking condition.
We install shingles from seven manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Covina’s specific heat and wind conditions, we most often recommend GAF, Atlas, and CertainTeed architectural shingles for their wind ratings and granule adhesion. You get a genuine choice based on your home’s architecture and your budget, not whatever is on the truck. Call (945) 303-9821 for a free estimate and a conversation about which system fits your roof.
Written by Greg Holloway, Owner at Tilehurst Roofing, serving Covina and the San Gabriel Valley.






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