Riverside Epoxy Flooring Group is San Bernardino County's premier specialist in foothill floor coatings, specializing in quartz broadcast wet-room floors, moisture-tested garage systems, and stained and sealed patios. We offer textured polyaspartic topcoats and heavy-build workshop epoxy.
Get a free floor estimate
Our team provides slab moisture testing before any system is chosen, delivering grippy floors for homes and hard-wearing surfaces for both residential and commercial projects. With 12 years in business behind us and a 2-year workmanship warranty on every floor, we've completed over 1,187 projects, from a single pool bath to a full detached workshop.
From pulling cracked laundry tile and grinding the old mortar bed to sealing a sun-faded patio below the hills, our team handles every detail. Serving San Antonio Heights and neighboring Claremont, Diamond Bar and Riverside, we book foothill installs around the dry stretches between winter storms.
Request a free estimate, and our Claremont location manager will test your slab and look at the drive before a single coat is chosen.
Walter, foothill lot above Euclid Avenue, San Antonio Heights
An older foothill house with a cracked tile laundry and pool bath that stayed wet
Carol, steep drive below the San Gabriel Mountains, San Antonio Heights
A faded, blotchy back patio the owners wanted warmer without a full flake look
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
What you can hold us to
Walter lives on a foothill lot above Euclid Avenue in an older house whose cracked tile laundry and pool bath never seemed to dry. We pulled the tile, ground the slab and laid an epoxy-quartz double broadcast in gray and white quartz with a textured topcoat across the laundry, mud room and pool bath, about 380 sq ft. It was an estimated $3,200 to $5,000 job over an estimated 2 to 3 days, and the floor now grips with wet feet and has no grout lines left to stain.
Carol's back patio, about 340 sq ft on a steep drive below the San Gabriel Mountains, had faded to a blotchy gray, and she wanted it warmer without a full flake look. We cleaned and lightly ground the concrete, applied an acid-free penetrating stain in two tones, and sealed it with a UV-stable polyaspartic sealer carrying fine grit. The patio was an estimated $2,200 to $3,600 over an estimated 1 to 2 days, and its earth tones are holding through the foothill sun.
San Antonio Heights sits higher and wetter than the valley below it, and both facts decide how a floor gets built here. The community is an unincorporated foothill neighborhood of the San Gabriel Mountains at about 2,103 ft, north of Upland, with an Upland mailing address. Because it rises against the mountains, it catches more rain than most of metro Los Angeles: the San Antonio Canyon station averaged about 25.08 inches a year, most of it from November through March, against roughly 17.3 inches down in Claremont.
That extra water matters under a coating. Ground moisture rising through a slab is what blisters epoxy from below, and many homes here are older, with slabs that predate modern vapor retarders. Every slab gets a moisture test, and a reading above 3 lbs per 1,000 sq ft per 24 hours typically calls for a moisture-mitigating epoxy primer before color goes down. With a median owner-occupied home value of $1,071,800 (ACS 2024 5-year), owners here are protecting a lot of house, so we test first and price second.
A steep foothill drive sends rainwater, decomposed granite and leaf litter straight to the garage door, so the floor just inside it needs texture and a sealed threshold. Smooth gloss epoxy turns slick the moment wet shoes cross it, which is why we add aluminum oxide or polymer grit to the clear coat for a slip resistance of 0.60 to 0.85 DCOF. On the drive and front walk themselves, a textured UV-stable coating over routed and filled cracks grips in rain and sheds the grit that rolls down from above.
Sun is the other half of the foothill climate, with July and August highs near 92°F at the canyon station, close to what our crews see in Riverside and Norco. A plain epoxy ambers under that light, so every exterior or open-door floor we install here carries an aliphatic polyaspartic topcoat that stays clear.
Laundry rooms, mud rooms and pool baths are the most common interior floor jobs in San Antonio Heights, because they are the rooms where old tile and grout fail first in a wet climate. A quartz broadcast floor, the system Walter chose, is typically estimated at $2,000 to $5,400 for 250 to 450 sq ft and takes an estimated 2 to 3 days, and it leaves a seamless, textured surface with nothing for water to sit in.
Detached garages that double as workshops are the other foothill pattern. A workshop floor built with heavy-build epoxy and grit typically runs an estimated $2,200 to $5,800, rated at a hardness of 75 to 85 Shore D, so a dropped wrench or a jack stand does not gouge it.
A quartz broadcast wet-room floor in San Antonio Heights is typically estimated at $2,000 to $5,400, and moisture readings, tile removal and texture level move the price most.
| San Antonio Heights job | Est. investment | Est. time on site |
|---|---|---|
| Quartz broadcast laundry, mud room or pool bath | Est. $2,000 to $5,400 per floor | Est. 2 to 3 days |
| Patio, porch or pool deck coating | Est. $1,200 to $4,000 per area | Est. 1 to 2 days |
| Interior slab floor with moisture barrier | Est. $3,800 to $8,000 per floor | Est. 2 to 3 days |
| Workshop or detached garage floor | Est. $2,200 to $5,800 per floor | Est. 2 to 3 days |
| Two-car garage, full flake polyaspartic | Est. $2,800 to $6,200 per garage | Est. 1 to 2 days |
Older foothill slabs land toward the top of each range more often than the newer tracts in Eastvale or El Sobrante do, because primer and crack work get added once the moisture test is read. California limits a home improvement deposit to $1,000 or 10% of the contract, whichever is less, and that is the most we collect up front.
Each figure above is an estimate for San Antonio Heights and is subject to change. Your written quote after the slab test sets the final price and the install schedule, based on the moisture reading, the prep the slab needs and the system you pick.
Foothill wet rooms usually get quartz broadcast floor systems, patios that only need warmer color get concrete staining and sealing, and sun-exposed decks get patio and pool deck coatings with a cooler, textured finish.
Our Claremont location manager runs every San Antonio Heights job, and the crew that reads your moisture test is the crew that lays the floor. Prep is mechanical diamond grinding to a CSP 2 to CSP 3 profile on every floor, never acid etching, and residential work carries our 2-year workmanship warranty against peeling, delamination and hot-tire pickup.
We drive up Euclid Avenue to every street in the community, and the same foothill crew covers Claremont's older garages and Diamond Bar hillside homes to the west. Every place we serve is listed on our epoxy flooring service areas page.
Foothill owners often add shop and workshop floor coatings for a detached garage, interior concrete floor coatings for a family room slab, or driveway coating and resurfacing for the steep drive that feeds the garage.
A quartz broadcast wet-room floor is typically estimated at $2,000 to $5,400, and your written quote sets the final price after we test the slab.
Yes, every slab is tested, because the foothills get more rain than the valley and moisture rising through old concrete blisters coatings.
We cannot change the slope, but we texture the floor inside the door and coat the drive so it grips in rain and sweeps clean.
Most quartz broadcast floors take an estimated 2 to 3 days, including tile removal and grinding, and a polyaspartic topcoat is walkable after roughly 4 to 8 hours.
No, we use a UV-stable polyaspartic topcoat or sealer, the same one we put on pool decks in Villa Park and Yorba Linda, and it holds its color where plain epoxy would amber.
Yes, the community sits inside our 45 mile service radius, on the foothill route we run with Claremont and Diamond Bar.
The deposit is never more than $1,000 or 10% of the contract price, whichever is lower, as California law requires.
Contact us today, and we will test your slab, measure the rooms and hand you a written, itemized quote.
Your local contact
Names, photos and stories are on our about page.
Location manager covering San Antonio Heights
Runs the San Antonio Heights schedule from the first moisture test to the final walk.
Where we work
Call us or send the form, and we will book a free moisture test and a written estimate.
Calls only, we do not receive text messages.
