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10 Best Roofers in Diamond Bar, CA

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Written By David Cusick

Last Updated June 2024

Your roof serves many important functions, from keeping your cool air in to keeping water out. However, caring for your roof isn't always simple. Your roof may be at increased risk of heat damage in Diamond Bar, especially during the hottest parts of the year.

No matter the issue, there's a roofing professional near you who can help. Check out our list of Diamond Bar's top roofers to find the best one for your job.

Top 10 Best Roofers in Diamond Bar

Custom Roof Company

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1077 E 3rd St, Pomona, CA 91766 (909) 623-7753 customroofcompany.com

Free inspections

Quality customer service

Customer education

Transparent pricing

Locally owned

Transparent project updates

Preventive services

Services Offered

Quality inspection
Slate
Flat roofs
Replacement
Metal roofs
Roof repair
Asphalt roofs

Affordable Roofing and Rain Gutters Inc

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13581 Gold Medal Ave, Chino, CA 91710 (626) 262-4376 affordableroofingservice.com

Free inspections

Quality customer service

Transparent pricing

Services Offered

Terra cotta
Flat roofs
Asphalt roofs
Skylights
Rubber roofs
Metal roofs
Replacement
Slate
Roof repair

Ruiz Roofing Corporation

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20550 E Holt Ave, Covina, CA 91724 (626) 533-8848 ruizroofingcorp.com

Customer education

Transparent pricing

Preventive services

Quality customer service

Services Offered

Replacement
Metal roofs
Roof repair
Skylights
Ventilation
Flat roofs

J.N. Davis Roofing

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1404C N Azusa Ave #479, Covina, CA 91722 (626) 815-1279 jndavis.com

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Quality customer service

Customer education

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Free inspections

Services Offered

Terra cotta
Skylights
Quality inspection
Replacement
Roof repair
Solar panel installation

T & G Roofing and Solar Company Inc.

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153 N 10th Ave, Upland, CA 91786 (909) 931-3204 tgroofing.com

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Honors appointment windows

Customer education

Transparent project updates

Quality customer service

Transparent pricing

Services Offered

Quality inspection
Solar panel installation
Ventilation
Roof repair
Attic insulation
Replacement
Terra cotta

All In One Roofing And Solar

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680 N Berry St # A, Brea, CA 92821 (714) 476-3304 allinoneteam.com

Quality customer service

Customer education

Free inspections

Transparent pricing

Services Offered

Roof repair
Quality inspection
Solar panel installation
Replacement
Flat roofs

Brea Roofing

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171 Gemini Ave, Brea, CA 92821 (714) 879-1588 brearoofing.com

Reputation for timeliness

Transparent project updates

Free inspections

Transparent pricing

Customer education

Quality customer service

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Solar panel installation
Roof repair
Replacement
Quality inspection

Preferred Roofing

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504 S Shellman Ave #3237, San Dimas, CA 91773 (909) 305-9314 preferredroofingsocal.com

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Transparent project updates

Quality customer service

Customer education

Free inspections

Services Offered

Slate
Roof repair
Flat roofs
Replacement
Terra cotta

Kaliber Roofing Inc

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11182 Poulsen Ave, Montclair, CA 91763 (909) 631-0310 kaliberroofinginc.com

Free inspections

Customer education

Transparent pricing

Quality customer service

Services Offered

Quality inspection
Roof repair
Replacement

Competition Roofing

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101 N Loma Pl, Upland, CA 91786 (909) 599-6270 competitionroofingco.com

Transparent pricing

Quality customer service

Free inspections

Services Offered

Flat roofs
Replacement
Roof repair
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on roofers to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does a New Roof Cost in Diamond Bar?

Budgeting is important when you need to tackle a project as big as roof replacement. Below, we provide the average price range for replacing a roof on a 1,500 square foot home in Diamond Bar. We also outline price differences between popular roof materials.

How To Choose a Roofing Company

Installing a new roof is a big home renovation that may cost over ten thousand dollars total when finished. It's crucial to research in depth to find the best credentialed and most respected roofing company for the job. Here are the main things to consider when picking a roofer.

  • Responsiveness and communication: From quote to project completion, your contractor should keep in consistent contact with you, answer all questions, and resolve any concerns.
  • Warranties and guarantees: Reputable roofing companies offer robust warranties that protect your roof. Look for guarantees on shingles lasting 30+ years, plus at least a 5-year guarantee on labor. Avoid companies that have less coverage than that.
  • Detailed written estimate: Quality roofing companies will provide a thorough written estimate. The estimate should specify the full scope of the project, materials required, and total cost with no surprise charges. Avoid providers that offer unclear bids, or ones that seem way too low or high.
  • Roofing materials and products: Quality roofing materials from leading manufacturers can handle Diamond Bar's weather and last decades. Be wary of contractors pushing cheap or generic materials. Inspect shingle samples before deciding.
  • Experience and credentials: Providers with a decade or more of experience show consistent quality and customer satisfaction. Before hiring, make sure the company has current licenses, bonding, and insurance. Inquire about professional certifications, such as those from the National Roofing Contractors Association.
  • References and reviews: Vet companies by reviewing their most recent online feedback on sites such as Google, Yelp, or the Better Business Bureau (BBB). Look for a history of consistently good feedback. Requesting local references is another great way to learn more about the customer experience.

Signs Your Roof Needs Repair or Replacement

Though most homeowners don't think about their roof every day, it plays a vital protective role for your home. Keep watch for these common signs that your roof may need inspection and repairs from a professional roofer.

Roof Age

The age and material of your roof play a big role. Asphalt shingles, the most popular roofing material for homes, normally last about around 20–25 years. If your roof is nearing or past this lifespan, have it inspected to see if complete replacement is necessary.

Leaks or Water Stains in Your Home

One of the clearest signs of roof trouble is water leaks. Stains on your insulation, walls, or ceilings, or in your attic are often a sign of water seeping through damaged or worn shingles. Even small leaks should not be ignored, as they can lead to mold growth and further deteriorate your roof.

Exposed Roof Decking Underneath Shingles

If you can see roof deck boards or sheathing under shingles, it indicates that those shingles are curling or losing their seal. This means the shingles likely need replacement. Shingles need to lie flat to stop water from getting into your home.

Cracked, Broken, or Missing Shingles

Carefully examine your shingles from the ground or a safely-placed ladder. Look for any shingles that are cracked or have lost their protective granule coating. Over time, environmental factors like storms can cause surface damage. To keep your roof in good repair, you should replace any missing shingles or ones with gaps.

Flashing Deterioration Around Roof Penetrations

Roof flashing seals off valleys, vents, chimneys, and other areas that pass through the roof. If the metal flashing is damaged, coming loose, or deteriorated, it can leak. Have any flashing problems fixed right away.

Sagging Roof Line

If you notice your roofline showing signs of sagging or unevenness, it could indicate a problem with the structure that requires professional inspection. A sagging roof deck will worsen over time if not reinforced or replaced.

Frequently Asked Questions About Roofing in Diamond Bar, CA

The best type of roofing material for your home in Diamond Bar will depend on things like your budget and how often you're willing to do maintenance.

Metal is more expensive but is more durable, while asphalt will be cheaper up front but won't last as long. Metal, clay, and treated wood tend to be the best options if your part of Diamond Bar is at higher risk of wildfire damage. In Diamond Bar, winters can be cold. This can make a wood roof, with its superior insulation, a better choice for you. On the other hand, clay roofs can be beneficial during the summer, as they reflect Diamond Bar's bright sunlight and save you money on cooling costs.

In California, licensing is handled by the Department of Consumer Affairs Contractors State License Board. Contractors are required to have an active license in order to work on roofing projects valued over $500, and in most cases must be bonded.

Generally, it takes about one to five days to replace a roof. Variables that could influence this timeline include the accessibility of your roof, its size, and what the weather is like in Diamond Bar during the process. .

Your roof does impact how energy-efficient your home is. For example, in the summer a good roof helps you cool your home more efficiently. Some roofing materials, like metal, provide better insulation than other types. Another way to improve energy efficiency, and potentially a great use of roof space in Diamond Bar, is installing solar panels.

The extent of the cleaning needed, as well as the material of your roof, will decide how your contractor cleans it. Power washing can be used on some roofs, but it isn't recommended for materials like asphalt tiles. "Soft washing" uses tools like brushes and brooms, plus chemicals like bleach and detergent.

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