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Top Roof Repair in Ontario, California Ranked
Maintaining a sound roof is a critical part of homeownership in Ontario, where the combination of intense sun, seasonal winds, and the occasional storm can take a toll on even the most durable materials. Whether you're dealing with a few missing shingles after a windy day or a persistent leak that's causing interior damage, understanding your roofing system and the local repair process is the first step to protecting your investment. This guide provides an overview of common roofing issues, materials, and repair considerations specific to the Ontario area to help you make informed decisions about your home's overhead shelter.

Edison California Roofing
7271 Garden Grove Blvd suite F, Garden Grove, CA 92841
Edison California Roofing is based in Garden Grove, CA, and serves the Santa Ana area with a variety of roofing services. They specialize in roof replacements, repairs, new installations, and commercial roofing projects. The company is known for its transparent process and keeps clients informed throughout each project. Their team is experienced in handling roof leak repairs and full roof replacements efficiently.

Green Ladder Roofing and Waterproofing
155 N Lake Ave Suite 800,874, Pasadena, CA 91101
Green Ladder Roofing and Waterproofing is a second-generation roofing company serving Los Angeles, CA. They provide a full range of roofing services including installation, replacement, repair, leak repair, inspection, and certification. The company emphasizes certified expertise and uses in-house crews to maintain control over workmanship. With over 20 years of experience, Green Ladder Roofing offers enhanced warranties and specializes in both residential and commercial roofing projects, including emergency restorations and waterproofing solutions.

One Stop Roofing
2302 S Fairview St, Santa Ana, CA 92704
One Stop Roofing provides residential and commercial roofing services in Irvine, CA, and surrounding areas including Orange County and Los Angeles County. They specialize in roof repair, replacement, and installation, offering solutions for asphalt shingles, tile roofs, and modified bitumen flat roofs. The company emphasizes quality craftsmanship and uses high-quality materials to ensure durable roofing systems. With years of industry experience, One Stop Roofing has built a reputation for thorough project execution and customer-focused service.

Guyou Construction Inc.
9880 Indiana Ave Suite 2, Riverside, CA 92503
Guyou Construction Inc. is a roofing and solar installation company based in Riverside, CA. They specialize in residential roofing services including roof repair and replacement, as well as solar panel installation and solar energy storage solutions. As an Owens Corning Certified Platinum Roofing Installer, they provide quality roofing materials and care. With over 20 years of combined experience and more than 9,000 solar installations, Guyou Construction offers expertise in solar roofing and battery systems like the Tesla Powerwall. Their services also include maintenance to ensure solar systems operate efficiently year-round.

White Glove Plumbing Orange County
1430 E Borchard Ave, Santa Ana, CA 92705
White Glove Plumbing Orange County is a licensed plumbing and restoration company based in Santa Ana, serving residential and commercial clients throughout Irvine, CA, and the broader Orange County area. They provide comprehensive plumbing services including leak detection, emergency plumbing, water extraction, sewage cleanup, mold remediation, and reconstruction. The company offers 24/7 emergency plumbing and water damage restoration services, with capabilities such as hydro-jetting, slab leak reroutes, and certified mold remediation. White Glove Plumbing integrates plumbing repairs with restoration work to manage water, fire, and mold damage, ensuring a streamlined process from initial leak detection to final repairs.
Common Roofing Materials in Ontario Homes
The material on your roof dictates its lifespan, repair needs, and overall performance against local weather. The most prevalent roofing types in Ontario reflect a blend of affordability, durability, and regional style.
- Asphalt Shingles: This is the most common and cost-effective residential roofing material 1. Modern architectural shingles offer good wind resistance and a variety of styles. However, they are particularly susceptible to damage from prolonged UV exposure and high heat, which can cause cracking, curling, and granule loss over time 1 2.
- Tile Roofing (Clay/Concrete): A popular and durable choice in Southern California for its classic aesthetic and longevity 1 3. Tile is excellent at resisting sun damage and fire. Its primary drawbacks are significant weight, which requires a sturdy roof structure, and higher material and labor costs for installation and repair. Individual tiles can crack from impact or foot traffic.
- Metal Roofing: Gaining popularity for its exceptional longevity, energy efficiency (reflecting solar heat), and fire resistance 1 4. While the upfront cost is higher than asphalt, metal roofs can last decades with minimal maintenance. Repairs typically involve sealing seams or replacing panels damaged by severe impact.
What Causes Roof Damage in Ontario?
Knowing the common culprits behind roof problems can help with early detection and prevention. Ontario's climate presents specific challenges.
- Solar Exposure and Heat: The relentless sun is a top adversary for roofs in the Inland Empire. UV radiation breaks down roofing materials, causing asphalt shingles to become brittle and lose their protective granules 1 2. Extreme heat can also cause materials to warp or expand and contract, leading to stress on seams and flashings.
- Wind and Storms: Seasonal Santa Ana winds and occasional storms can lift shingles, tear off flashing, and drive rain underneath roofing materials 5 6. Valleys and edges are especially vulnerable. Wind can also send debris like tree branches onto roofs, causing immediate puncture or impact damage.
- Age and General Wear: All roofing materials have a finite lifespan. Over time, general wear and tear will lead to material breakdown. For shingles, this appears as widespread granule loss in gutters, multiple cracks, or a general "balding" appearance 7.
- Improper Installation or Previous Repairs: A roof is only as good as its installation. Poor workmanship around flashings, vents, and chimneys is a frequent source of leaks that may not appear until years later.
Types of Roof Repairs and Typical Timelines
The scope of a roofing project can vary widely, from a simple patch to a major restoration. Understanding the common repair categories helps set expectations for both timeline and complexity.
- Minor Repairs: These are localized fixes that address specific, small-scale problems. Examples include replacing a handful of missing or damaged asphalt shingles, resealing a small area of flashing around a vent pipe, or patching a minor leak. A skilled professional can often complete such jobs in a single day 5 7.
- Moderate Repairs: This category involves more labor or addresses critical system components. It includes repairing or replacing longer sections of damaged flashing (especially in valleys or at wall intersections), fixing leak sources that have damaged the roof deck, or addressing widespread granule loss on an aging section. These projects typically take 1 to 3 days 8 9.
- Major Repairs/Section Replacement: When damage is extensive-such as a large area of rotten decking (plywood/OSB) from a long-term leak, widespread storm damage across multiple slopes, or failure of a major roofing component-a significant section of the roof may need to be stripped down to the deck and rebuilt. This level of repair can take 3 to 5 days or more, depending on the roof's size and complexity 9 7.
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Understanding Roof Repair Costs in Ontario
Costs for roof restoration are influenced by the repair type, materials, roof pitch, and accessibility. The following estimates are based on regional data to provide a general framework, but obtaining multiple detailed quotes from licensed Ontario contractors is essential for an accurate price for your specific situation 1 8 10.
- Minor Repairs: For small, straightforward jobs like replacing a few shingles or sealing a leak around a fixture, homeowners can expect costs to range from approximately $300 to $1,2001 5.
- Moderate Repairs: Addressing more involved issues like repairing valleys, replacing flashing, or fixing leaks that have caused deck damage typically falls in the range of $1,500 to $5,0005 9.
- Material Costs (Per Square Foot): The cost of the roofing material itself is a major factor in any repair involving replacement.
- Full Roof Replacement: While not a repair, it's helpful to understand the cost context. A complete roof replacement in Ontario can range from $8,000 to over $30,000, with the final price heavily dependent on the home's square footage, chosen material, and roof complexity 1 3.
The Importance of Professional Assessment and Quotes
Given the variables at play, a professional inspection is invaluable. A qualified roofer can identify not just the obvious problem but also its underlying cause and any secondary damage (like mold or structural rot in the decking) that might not be visible from the ground 8 11. They can also advise whether a repair is a cost-effective solution or if a larger section replacement or full replacement is a more prudent long-term investment. Always verify that a contractor is licensed, insured, and has positive local references before proceeding with any roofing work 10.
Frequently asked questions
Sources
Footnotes
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Cost to Repair or Install a Roof in California - https://www.photonbrothers.com/central-coast/blog/cost-repair-replace-roof-california ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9
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Ontario's Best Guide: Roofing Solutions for Storm Recovery - https://alpharoofing.com/blog/roofing-solutions-commercial-residential-storm-recovery/ ↩ ↩2
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How Much Does It Cost to Replace a Roof in California? - Fixr.com - https://www.fixr.com/costs/roof-replacement-california ↩ ↩2 ↩3 ↩4 ↩5
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Average Roof Replacement Timeline (2025 Guide) - https://pripremiereroofing.com/average-roof-replacement-timeline/ ↩ ↩2
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How Much Does It Cost To Repair A Roof In 2025? - https://paccsolutions.com/blog/roof-repair-cost-guide/ ↩ ↩2 ↩3 ↩4
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Roof Repair Cost (2025) | Prices by Damage Type & Region - https://modernize.com/roof/repair-cost ↩
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Residential Roof Replacement: Signs You Need It - https://www.excelroofing.ca/residential-roof-replacement/ ↩ ↩2 ↩3
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Residential Roof Repair Prices: A Comprehensive Guide to What ... - https://www.totalroof.com/residential-roof-repair-prices-a-comprehensive-guide-to-what-you-should-pay ↩ ↩2 ↩3
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How to Calculate Roof Repair Costs | Tips for Estimating ... - https://bossroofingsiding.com/how-to-calculate-roof-repair-costs/ ↩ ↩2 ↩3 ↩4
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The Complete Roof Replacement Guide: Costs, Materials, and What ... - https://tombyerroofingservice.com/blog/complete-roof-replacement-guide-costs-materials-process/ ↩ ↩2
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Understanding the Average Price of Roof Repair and How to ... - https://www.blackwolfroofingco.com/understanding-the-average-price-of-roof-repair-and-how-to-get-accurate-roof-repair-estimates ↩