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TRUSTED BY ONTARIO, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon690
    Verified roofing services reviews

Top-Rated Roofers in Ontario - Updated Nov 2026

Avatar for Federal Building & Roofing
Federal Building & Roofing
4.8(
81
)
Asphalt Shingle Roofing - Install or ReplaceAsphalt Shingle Roofing - RepairMetal Roofing - Install or Replace+26 more

Serving Ontario, CA and surrounding areas

Approved

In business since 1979

Free estimates

Warranties offered

"GREAT! REASONABLE PRICE, QUICK, EFFICIENT, GAVE ME QUOTE IMMEDIATELY, DIDN'T REQUIRE MONEY UP FRONT ONLY AFTER JOB COMPLETE. WOULD DEF. HIRE AGAIN. NEEDED ROOF REPAIR FROM WATER LEAKING INTO SPARE BEDROOM. THEY GOT UP ON ROOF TOOK BEFORE AND AFTER PICTURES OF MY TILE ROOF. THEY WIDENED THE VALLEYS REPAIRED BROKEN TILES AND REPAIRED AROUND VENTS. TWO DAYS WORK."
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Composition Roofing
Tile Roof

+2

7 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Hoyt Roofs, Inc
Hoyt Roofs, Inc
4.3(
132
)
Asphalt Shingle Roofing - Install or ReplaceNatural Slate Roofing - Install or ReplaceFlat, Foam, or Single Ply Roofing - Install or Replace+25 more

Serving Ontario, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Work started on a Saturday with large experienced teardown crew. They completed teardown and started wood replacement where necessary. At end of the day they covered the entire roof with sheeting in case of rain. A small experienced crew returned early on Monday to complete the wood work. When city inspection was done on wood repair, they started the shingle work and finished in a few days. At the end of every day they went on a nail patrol with magnetic tools looking for nails around the perimeter of the house. They did a very professional job with roof, cleanup, etc. I used Hoyt before on another house and will use them again."
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+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
)
Asphalt Shingle Roofing - Install or ReplaceNatural Slate Roofing - Install or ReplaceTraditional Tile Roofing - Repair+26 more

Serving Ontario, 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 C.S. Construction and Roofing
C.S. Construction and Roofing
4.6(
14
)
Asphalt Shingle Roofing - Install or ReplaceTraditional Tile Roofing - Install or ReplaceAsphalt Shingle Roofing - Repair+26 more

Serving Ontario, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"The roofing repairs were done on Friday, 3/31/17. The workmanship was excellent. After removing the tiles, Corey Stratton took pictures of the exposed roof to show us where it leaked and where the water ran down. He and his crew completed the repair in just under two hours with a one year warranty on the work. Corey was very professional and personable. Doing business with K.S. Roofing was a pleasure, and I would highly recommend them."
Roof replacement Hesperia
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+8

Response time1 day
Response rate100%
10 neighbors recently requested a quote
3rd Generation Roofing
4.5(
72
)
Asphalt Shingle Roofing - Install or Replace - For BusinessFlat, Foam, or Single Ply Roofing - Install or Replace- For BusinessNatural Slate Roofing - Install or Replace- For Business+1 more

Serving Ontario, CA and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"Got quotes and talked to 3 other roofers. 3rd Generation Roofing gave me the best pricing, great costomer service and followup, and their crew was efficient and clean. I would, and already have, recommended 3rd Generation Roofing to others in need of a new roof. Altogether a good project experience."
Response time2 days
5 neighbors recently requested a quote
Recommended by93%of homeowners
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Roofing FAQs, answered by experts

Asphalt shingles blister when air gets trapped between building materials, either within the layers of the shingle itself or in adhesives on the undersides of the shingles. As the roof heats up in direct sunlight, the trapped gas expands and creates a bubble in the roof. Eventually, the bubble can pop, leaving an exposed area of decking and underlayment.

The warranty for algae-resistant shingles varies by manufacturer, but the industry standard is 25 years for overall shingle durability and lifespan and between 10 and 15 years for algae resistance. Some products come with longer warranties for discoloration of up to 30 years. Check warranty coverage for the shingle and algae protection before deciding on a roofing product.

A spray foam roof costs an average of $6,000 to install, making it one of the most affordable flat roofing options available. Costs can increase if you have a complex roof design with many roof vents or have a roof that’s larger than average. While up-front costs are relatively low, keep in mind that ongoing maintenance and repairs tend to be more expensive than you’d see with other flat roof materials.

Roofers most often use nails to fasten roofing shingles and other roofing materials. Nails have more holding power than staples and offer better weather resistance and longevity. However, it is possible to use staples instead of nails when installing a roof. Staples are less expensive, but not as high-quality.

To apply for a roofing permit, contact your local building authority. You may visit their office in person or contact them via phone or email. For more information on how to start the process, visit their website.

The Ontario, CA homeowners’ guide to roofing services

From average costs to expert advice, get all the answers you need to get your job done.