About Ontario Roofing
The short version about Ontario Roofing. We are a roofing company with a shop on East Lowell Street in Ontario. Our Google reviews go back more than ten years, from roofs and attic insulation to decks.

How We Work
We tell you what we see and show you photos of it. If a roof needs a small repair, we fix the small thing. If it is done, we say so and give you the price in writing. Nothing starts until you say yes.
Our customers say the same few things in their reviews. We keep them informed, we show up when we said we would, and we clean up when the job is done. That is the standard we hold every crew to.
Who Does the Work
Ontario Roofing is a DBA of Loyalty Roofing Inc., a California licensed roofing contractor in Norco. License #1152913 can be checked on the Contractors State License Board site.
What We Work On
Concrete and clay tile, asphalt shingle and flat roofs, on homes and small commercial buildings. Attic insulation and radiant barrier, which pairs well with a new roof. And decks, which we have built for years alongside our roof work.

Where We Work
Ontario and the cities around it, from Pomona and Claremont in the west to Fontana in the east, and from Upland in the north to Chino Hills and Eastvale in the south.
How To Check Us
You should not have to take our word for it. Here is how to check us before you call.
- The license. Look up CA License #1152913 on the Contractors State License Board site. It is held by Loyalty Roofing Inc..
- The reviews. We have 4.9 stars from 45 Google reviews, going back more than ten years. Read them here or on Google Maps.
- The shop. 4335 E Lowell St Ste G, Ontario, CA 91761. The phone is answered 24 hours.
- The contract. Every job is done under a written contract from Loyalty Roofing Inc.. Our terms page lists the down payment limit California sets.
Ontario Roofing did an incredible job on our roof replacement. They were professional, efficient, and the attention to detail was impressive. The crew was friendly and made sure everything was done to our satisfaction.
They were very communicative and kept us informed throughout the entire process. The quality of their work is evident in our beautiful new roof.
They were transparent about the costs and the timeline, and there were no surprises. The workmanship is top-notch, and our new roof looks amazing.
The roofers worked in the 100 plus heat and rain to finish before the hard rain came.
Questions About Who We Are
Is Ontario Roofing licensed?
Yes. Ontario Roofing is a DBA of Loyalty Roofing Inc., CA License #1152913. You can look it up on the Contractors State License Board site.
Who does the work on my roof?
Loyalty Roofing Inc., a California licensed roofing contractor in Norco, does the work under a written contract.
Where is your shop?
Our shop is at 4335 E Lowell St Ste G in Ontario, near the airport. We work in Ontario and nine nearby cities.
How long have you been doing this?
Our Google reviews go back more than ten years, for roofs, attic insulation and decks.
Where to Find Ontario Roofing
4335 E Lowell St Ste G, Ontario, CA 91761
Get a Free Roof Estimate
Tell us what your roof is doing. We look, take photos and give you a written price.