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Top-Rated Roof sealant application pros in Diamond Bar - Updated Nov 2026

Avatar for Clear View Roofing & Construction
Clear View Roofing & Construction
4.9(
133
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"Clearview Roofing did an amazing job for our roof replacement. Exceptional workmanship and was completed in a timely fashion. Danny was our rep and was very personable and kept us in the loop during the project, from start to finish. We are planning our next house project with Danny since we were so pleased with the roof project. Thank you vey much!"
Hard Working Crew Member
Owens Corning 50 Yr. Roof
Owens Corning 50 Yr. Roof
Owens Corning 50 YR System
Owens Corning 50 Yr. Roof

+7

Response time4 hrs
Response rate99%
832 neighbors recently requested a quote
Avatar for ESSENTIAL BUILDERS INC
ESSENTIAL BUILDERS INC
4.9(
189
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Warranties offered

"Essential Builders did an outstanding job replacing my roof. The team was professional, efficient, and communicative throughout the entire project. The final result was exceptional, and I am extremely satisfied with the work done by Essential Builders. I highly recommend them for any construction needs."
Flat Roof Torch Down
Full Roof Completed
Full Roof Completed
Full Roof Completed
Owens Corning Underlayment

+35

Response time5 hrs
Response rate97%
135 neighbors recently requested a quote
Avatar for Reign Roofing, Inc.
Reign Roofing, Inc.
5.0(
54
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I can't recommend Reign Roofing enough! They completed our steep roof project in just one week, and the quality of work is excellent. After receiving quotes from 10 other roofers, Reign Roofing stood out for its professionalism, reasonable pricing, and transparency. Our insurance (USAA) was difficult, offering only half of the replacement cost, but Reign Roofing worked with them to submit a detailed estimate and get our roof fully covered. We’re grateful for their hard work and help navigating the insurance process. Thank you, Reign Roofing!"
Response time1 day
Response rate100%
66 neighbors recently requested a quote
Avatar for Federal Building & Roofing
Federal Building & Roofing
4.8(
81
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1979

Free estimates

Warranties offered

"Federal building & roofing (FBR) The work crew did an outstanding job. The price was extremely reasonable and they completed repairs on my roof in less than a day. Extremely satisfied with the work done. I highly recommend Richard and his crew. Thank you guys for a job well done...."
Additional Photos
Additional Photos
Additional Photos
Composition Roofing
Tile Roof

+2

7 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for California Roof Experts
California Roof Experts
4.7(
302
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Emergency services offered

"California roof experts is a highly professional company. The first time I received a phone call, after requesting help from Angie’s list, they called and left a very nice message. I returned their call and we had a very nice conversation about what needed to be done. We arranged for an inspection/estimate and they were on time - they were very professional. They explained everything, they were not rushing me and it was a very nice experience. I felt very confident with them. After a second estimate from another company did not go well at all, we went ahead and went with california roofing experts. This was a metal roof of a mobile home that was very old and in need of a good cleaning and protection with sealant. They did an excellent - excellent job. They were on time and they were professional. We got pictures before and after and were amazed at the difference. We are so glad we chose them. And we’re glad they could work on a mobile home. Highly recommend"
Reroof with Tile Replacement - Walnut, CA
Reroof with Tile Replacement - Walnut, CA
Reroof with Tile Replacement - Walnut, CA
Reroof with Tile Replacement - Walnut, CA
Reroof with Tile Replacement - Walnut, CA

+41

Response time2 days
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Hoyt Roofs, Inc
Hoyt Roofs, Inc
4.3(
132
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"I contacted Hoyt for a quote. Charles came out and made a thorough presentation, leaving me with a pamphlet explaining the product to be used. Within a day I received an email with a quote that was comparable (even a little more attractive) than the other half-dozen quotes I had received. I checked references and reviews, and decided to hire them to replace my 20+ year old roof. I was advised that the final cost could be more depending on how much wood repair was needed. I was also advised that the cost was higher due to the cost of wood (pandemic). I needed a start date delayed due to my schedule, which was to the company's advantage. They began exactly when I needed them. Charles even assisted in moving the RV out of the driveway. Demo of the roof was complete in one day. The rest of the work was done efficiently, and crew cleaned up each day leaving the house looking neat. Inspection was easily completed, and work completed in approximately one week, with Charles answering phone calls with questions and assisting as needed. I would highly recommend Hoyt for product, cost, and quality of workmanship."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time1 day
10 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for JORDAN ROOF COMPANY
JORDAN ROOF COMPANY
4.7(
124
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"We have a historic home and there was additional care required to replace siding beneath the roofing material at the eaves. The team at Jordan roof completed the entire job in only 4 days, they fixed up our dormer which had shingles that had deteriorated, and repainted some of the shingles. Our home looks better than ever! Great responsiveness, fair pricing, and high quality work."
Commercial
3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Home 2 Renovate, Inc.
Home 2 Renovate, Inc.
4.2(
362
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Emergency services offered

"Other than the four times of choosing the tiles for the roof it was great. Your representatives should come prepared to show the tile which are in stock and in compliance with the city they are working in. Otherwise the crew was great, efficient and very professional and clean. Loved it."
Tear- off.
Tarps.
Magnetic Roller.
Tear Off Truck.
Wood Replacement.

+130

Response time4 hrs
Response rate96%
105 neighbors recently requested a quote
Avatar for Roofing Angels
Roofing Angels
5.0(
17
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"I never thought I'd describe a roof replacement as a pleasant experience, but here we are. From the start, Jonathan and the team at Roofing Angels were a breath of fresh air. We got multiple quotes, and Roofing Angels wasn’t the cheapest, but they were the most transparent and professional. Jonathan took the time to inspect our roof thoroughly (unlike others who barely looked at it) and explained why certain materials were better than others. I appreciated that he wasn’t just trying to upsell us—he genuinely wanted us to make the best choice for our home. The crew was incredible. They arrived early, worked efficiently, and kept us updated throughout the process. I loved how respectful they were of our space—our driveway and yard were spotless when they finished, which I can’t say for other contractors we’ve worked with in the past. Now, our house looks better than ever, and I actually feel relieved every time it rains, knowing our roof is rock solid. If you want a team that truly cares about their work, look no further than Roofing Angels!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time9 hrs
Response rate100%
20 neighbors recently requested a quote
Avatar for Weather Tide Roofing
Weather Tide Roofing
4.8(
23
)
Sealant for Roof - Apply

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2003

Free estimates

Offers commercial services

Welcome to Weather Tide Roofing Inc, proudly servicing La Palma California and the surrounding areas. Our goal is to complete your project to perfection. Our focus is building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed.

24 neighbors recently requested a quote
Recommended by90%of homeowners
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