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10 Best Roofers in Diamond Bar, CA

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Written By David Cusick

Last Updated February 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, particularly during the summer.

For all issues, large or small, there's a local roofing contractor who can help. Use our guide to connect with one of the top roofers in Diamond Bar.

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

Flat roofs
Quality inspection
Residential
Slate
Metal roofs
Roof repair
Asphalt roofs
Roof cleaning
Synthetic
Commercial roofing

All In One Roofing And Solar

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

Free inspections

Customer education

Transparent pricing

Quality customer service

Services Offered

Residential
Roof cleaning
Commercial roofing
Metal roofs
Solar panel installation
Storm damage
Quality inspection
Flat roofs
Roof repair

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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Transparent pricing

Transparent project updates

Customer education

Quality customer service

Services Offered

Skylights
Roof cleaning
Residential
Commercial roofing
Quality inspection
Roof repair
Solar panel installation
Clay
Storm damage

Ruiz Roofing Corporation

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

Quality customer service

Preventive services

Customer education

Transparent pricing

Services Offered

Commercial roofing
Flat roofs
Metal roofs
Ventilation
Roof repair
Skylights
Residential

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

Free inspections

Transparent pricing

Quality customer service

Services Offered

Ventilation
Residential
Solar panel installation
Gaf
Roof repair
Underlaying
Quality inspection
Commercial roofing
Attic insulation
Owens corning
Clay

Preferred Roofing

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

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Customer education

Quality customer service

Transparent project updates

Free inspections

Services Offered

Residential
Flat roofs
Roof repair
Storm damage
Slate
Clay
Commercial roofing
Roof cleaning

Dowd Roofing Co.

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540 S Glenwood Ave, Glendora, CA 91741 (626) 857-1070 dowdroofing.com

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Quality customer service

Customer education

Preventive services

Services Offered

Owens corning
Storm damage
Roof repair
Asphalt roofs
Residential
Gaf
Commercial roofing

W.H Byars Roofing Co.

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202 S Bon View Ave, Ontario, CA 91761 (909) 986-0509 byarsroof.com

Transparent pricing

Quality customer service

Services Offered

Skylights
Commercial roofing
Roof repair
Storm damage
Roof cleaning
Gaf
Dormers
Mold remediation
Cedar
Foam roof
Residential

Brea Roofing

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

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Free inspections

Customer education

Quality customer service

Reputation for timeliness

Services Offered

Commercial roofing
Roof cleaning
Quality inspection
Roof repair
Residential

ARM Roofing Specialists INC

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2194 Notre Dame Ave, Pomona, CA 91766 (909) 573-6357 armroofingca.com

Transparent pricing

Customer education

Preventive services

Free inspections

Quality customer service

Services Offered

Roof repair
Quality inspection
Commercial roofing
Residential
Storm damage
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?

For a project as substantial as roof replacement, cost matters. Below is the typical price range to replace a roof on a 1,500 square foot home in Diamond Bar. We also compare prices for popular roofing materials.

How To Choose a Roofing Company

A new roof installation is a large home renovation that can cost over twenty thousand dollars total. It's crucial to research and find a highly reviewed and recommended roofing company for the job. Here are some important considerations for selecting a roofer.

  • Responsiveness and communication: From the time you get a quote to project completion, your roofer should communicate consistently. A representative should respond to questions and resolve any issues during the project.
  • Warranties and guarantees: A reliable roofer will provide strong guarantees from the manufacturer which protect shingles for over 30 years along with at least a 5-year guarantee on workmanship. Be wary of shorter guarantees.
  • 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 years. Avoid 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 likely indicate water seeping through damaged or worn shingles. Even small leaks can be an issue, as they can cause mold growth and further damage to your roof.

Exposed Roof Decking Underneath Shingles

If you can see roof deck boards or sheathing under shingles, it means 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 cracked, peeling away, or completely worn out, it can leak. Have any flashing problems fixed right away.

Sagging Roof Line

An uneven roofline may indicate a structural issue that requires professional evaluation. Without properly addressing and resolving the issue, a sagging roof will get worse over time.

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 costs more 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.

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

It generally takes between one and five days to replace a roof. Variables that could influence this timeline include the size of your roof, how easily accessible it is, and what the weather is like in Diamond Bar during the timeframe. .

Your roof can impact how energy-efficient your home is. For example, a good roof allows you to use less energy to cool your home during the summer. Some materials (like metal) are more energy-efficient than others. In Diamond Bar, you can reduce your carbon footprint even more by installing solar panels on your roof.

Depending on which contractor you use, some roof replacement costs may be covered by your home insurance. Some insurance companies may have preferred contractors. It may also be easier to have costs covered if the damage was caused by a covered weather event, such as a tornado. You can talk to your home insurance company to find out if they have preferred contractors, and what costs might be covered.

How soiled your roof is, in addition to what it's made of, will determine 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 brooms and brushes, plus chemicals like bleach and detergent.

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