Top Roofing Contractor

Diamond Bar, CA

Residential and Commercial

(818) 600-4979Appointments


  • Roof Repair & installation
  • Shingles, tile, and flat roofs
  • New construction roofing
  • Inspections & maintenance

more info…

Rain Gutters Contractor

Rain Gutters

  • Service & installation
  • Seamless rain gutters
  • Aluminum & copper
  • Gutters cleaning service

more info…

Solar Panels

  • Solar panel systems
  • New installation & repairs
  • Reduce bill up to 55%
  • Residential & commercial

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  • Roof and Attic insulation
  • Attic ventilation system
  • Improve energy efficiency
  • Green energy barriers

more info…

What Makes Us Stand Out From The Rests?

One place for all your roofing needs

Free Estimate

Providing fast and free in-home consultation to our clients



Our company is a fully licensed, insured and bonded

Local Service

Serving the greater Los Angeles, Ventura and Orange counties

Top Rated

Southern California top rated roofing service gurentied

Customer Testimonials

Reviewed by local Diamond Bar customers

Fast solutions for you

Quick, professional and trustworthy were the qualities I was looking for a roofing contractor in Diamond Bar CA and I found it in Their inspector came to my house on time and explained well how their roofing process takes. He also explained all the materials used for the roofing and told me what my options are. I can say it was a truly dedicated service, which I appreciate. He did amazing not just during initial inspection but also during the time he sealed my roof. Glad to work with an amazing company like you!
- Angela Short

Use them for your work

I was in charge of getting a new roof for my sister's house and I came to know when I was reading reviews. They completed work fast and competently it was undoubtedly a positive experience. Every time during the whole job, I thought there are going to be unfortunate things that would raise the quote we got. But they were careful during the job and I'm glad this Diamond Bar CA roofing company keep its promise to deliver excellent roofing service.
- Olivia Dickens

Our roof finally opens smoothly

★★★★★ is the best. Just had an emergency with our roof couple of days ago as its leaks starting getting worse. We badly needed a brand new roof, which this amazing roofing contractor in Diamond Bar CA did wonderfully. Gave me an honest estimate for the repair, fully explained every option I have and were wonderfully helpful the whole time. I'm glad to be safe with Top Roofing Contractor.
- Lillian Ball

This has to be fastest roof service in town

The first time I hired Top Roofing Contractor, it's the guaranteed serviced that is particularly important to me. Their assurance that they'll do an excellent job was what I hold onto and I'm happy they delivered. Once the work was done, our roof's inspection easily passed the first attempt. Overall, it was excellent experience with our roof strong, durable and looked good as well. We've only gotten compliment with our roof since then and that's all thanks to the best roof repair in Diamond Bar CA.
- Pippa Lyman

Such fantastic employees

My flat roof can be tricky sometimes that I've roofers coming in to repair it more than a few times. After several hires, I finally found the Diamond Bar CA roofing company I need. When I hired them for roofing repair, their people are nothing but excellent. They delivered exactly what I asked and what they promised. My newly repaired roof was amazing at a price that is a lot better than the bids I got from other roofing services. This top-notch service knows exactly what they're doing. I will most certainly hire again.
- Anna Lee

Specialists at work

I debated whether to hire or not but the excellent reviews won. Many of their previous costumers have only good things to say and so I decided to try. Glad I am that I did because they did excellent in repairing my roof. It didn't take a lot of time as I thought it would but the repairs are precise and quality. A few days after fixing my roof, it rained and there was not a single leak as it used to. That was enough to convince me I had the best roof repair in Diamond Bar CA.
- Theresa Lee

Best in town!!

The whole time, it was a great job from Their people arrived on time. The materials were quality. The process was smooth. However, what I really like about their service is how detailed their bid was. It was there, all the small details about the repair, specified and written legibly. It even has a second and third copy, ensuring the service was documented well for the company's sake and mine. For me, this kind of service by Diamond Bar CA roofing company inspires confidence that I now have for the company.
- Penelope Edmunds

Diamond Bar CA customer reviews
5.0 rating based on 12,345 ratings
Overall rating: 5 out of 5 based on 7 reviews.

Your Benefits by choosing us

Be on the safe side!


Providing 25 years warranty for new roofing systems


Get low APR loans up 100% of your project


Get the best quality new roof at fair market price

Best roofing company in Diamond Bar, CA

Prime roofing company in Diamond Bar, CA offer shingles, tile and flat roof repair, replacement and new installation, seamless rain gutters, solar panels installation, attic insulation and skylight installation, available for residential and commercial properties.
Diamond Bar,

Tel : (818) 600-4979
Email :
Price Range: $10,000-$250,000

Servicing the following zip codes: 92629