Riverside Epoxy Flooring Group is the Pomona Valley's leading specialist in older-slab floor coatings, specializing in polished concrete studios, detached garage epoxy, and moisture-barrier interior floors. We offer urethane cement kitchen floors and heavy-build workshop coatings.
Get a free floor estimate
Our team provides staged diamond grinding on uneven old slabs, delivering character-keeping studio floors for homes and washdown-ready kitchens for both residential and commercial projects. Our 1,187 completed projects over 12 years in business, every one backed by a 2-year workmanship warranty, run from a single-car detached garage to a full restaurant kitchen.
From leveling a century-old garage slab in stages to coving a kitchen floor up the wall at the dish pit, our team handles every detail. Serving Claremont and neighboring San Antonio Heights, Diamond Bar and Riverside, we plan each job around narrow driveways, rear-lot garages and the property's older details.
Schedule a free estimate, and our Claremont location manager will look at the slab with you before recommending a coating or a polish.
Nathan, Craftsman bungalow near the Village, Claremont
A detached garage being turned into a studio on an old, uneven slab
Elaine, tree-lined street north of Foothill Boulevard, Claremont
A restaurant kitchen with failing quarry tile, broken grout and a standing-water corner by the dish pit
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
What you can hold us to
Nathan was turning the detached garage behind his Craftsman bungalow near the Village into a studio, and its old slab was uneven from corner to corner. Rather than bury it under a coating, we ground it in stages, densified it and polished the converted garage studio, about 620 sq ft, to a satin sheen with a satin guard, keeping the old slab's character. The floor was an estimated $4,200 to $6,400 over an estimated 2 to 3 days, and he now has a soft sheen underfoot with no coating to wear through.
Elaine owns a restaurant on a tree-lined street north of Foothill Boulevard whose quarry tile had failed, with broken grout and a standing-water corner by the dish pit. We removed the tile, sloped the floor to the drain and laid urethane cement slurry with an integral cove and quartz texture across the kitchen and dish area, about 1,100 sq ft, working Sunday to Tuesday. That job was an estimated $9,200 to $13,800 across an estimated 3 to 5 days, and the floor takes hot-water washdowns and passed its next health inspection.
The typical Claremont garage job is a detached, single-car or two-car garage at the back of a long, narrow lot, behind a house that may be a century old. Craftsman bungalows from 1911 and 1915 still stand in the Village, the city's dominant housing decade is the 1960s, and the HC Historical Claremont District protects architecture, workmanship and materials, with the Architectural and Preservation Commission reviewing design. A floor coating inside a garage is not an exterior change, but owners in the district still want work that respects the house, which is why many choose polished concrete over a bright flake.
Old garages also bring access limits: a narrow drive past the house, mature trees along the way and no room for a grinder trailer. We bring walk-behind grinders with dust extraction down the drive, the same setup we use on tight rear-lot garages in North Tustin and Villa Park.
An old Claremont slab is repaired and tested before any coating goes on it, because aged concrete fails coatings in ways a new tract slab never does. Many slabs here were poured without a vapor retarder, so every one 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. Cracks are routed out and filled, spalled edges at the door are patched, and the surface is ground to a CSP 2 to CSP 3 profile, never acid etched, before a basecoat of 80% to 100% solids goes down.
Claremont summers regularly pass 100°F, and the city averages about 17.3 inches of rain a year, most of it in winter, so a slab here swings from baked to damp across the seasons. That swing is the reason we favor a UV-stable aliphatic polyaspartic topcoat on any garage that sits with its door open, since plain epoxy ambers in that sun, and it is the same topcoat we put on hot Eastvale and Norco garages.
Claremont's commercial floors follow written specifications, and we bid them from the spec, not from a homeowner price list. The city is home to the Claremont Colleges, a cluster of undergraduate and graduate schools, and the Village next to the campuses has restaurants, galleries and the converted citrus Packing House. Kitchens, labs and service rooms in buildings like these need seamless floors with cove bases, and a high-build system there typically runs 40 to 120 mils on high-build and self-leveling floors.
Restaurants are the commercial job we see most often here, and they rarely close for long, so we avoid systems that typically need 72 to 96 hours before carts can roll. Elaine's kitchen was coated Sunday to Tuesday so service resumed on schedule, and a heavy commercial section of 1,000 to 2,000 sq ft typically takes an estimated 3 to 5 days.
A one-car detached garage floor in Claremont is typically estimated at $1,500 to $3,600, and slab repair, moisture readings and finish choice move the price most.
| Claremont job | Est. investment | Est. time on site |
|---|---|---|
| One-car garage floor, solid color epoxy | Est. $1,500 to $3,600 per garage | Est. 1 to 2 days |
| Two-car garage, full flake polyaspartic | Est. $2,800 to $6,200 per garage | Est. 1 to 2 days |
| Interior slab, polished or coated over a moisture barrier | Est. $3,800 to $8,000 per floor | Est. 2 to 3 days |
| Workshop or studio garage floor | Est. $2,200 to $5,800 per floor | Est. 2 to 3 days |
| Restaurant or commercial floor section | Est. $5,500 to $14,000 per section | Est. 3 to 5 days |
Older Claremont slabs tend to sit higher in each range than newer floors, because crack routing, patching and primer are added after the slab is tested. With a median owner-occupied home value of $897,000 (ACS 2024 5-year), owners here usually weigh polish against coating on looks as much as price. Your deposit here stays at the state limit, $1,000 or 10% of the job, whichever is lower.
These prices are estimates for Claremont and are subject to change. Your written quote after the slab inspection sets the final price and the install schedule, based on the repairs, the moisture reading and the finish you choose.
Owners who want the slab itself on show, as Nathan did, choose polished concrete floors, daily parking garages get garage floor epoxy coating, and old interior slabs moving off carpet get interior concrete floor coatings over a moisture barrier.
Our Claremont location manager is based on this side of the map and runs every Claremont, Diamond Bar and San Antonio Heights job herself. Our surface prep technician opens each old slab with a diamond grinder and dust extractor, and every residential floor carries our 2-year workmanship warranty against peeling, delamination and hot-tire pickup.
We work every Claremont neighborhood, from the Village and the streets around the colleges to the larger homes on the former citrus land in the north of the city. Our crews also cover San Antonio Heights foothill homes just to the northeast and Diamond Bar hillside garages to the southwest, and our epoxy flooring areas page lists every place we serve.
Village restaurants book our restaurant and commercial kitchen floors crew, owners with a backyard woodshop use our shop and workshop floor coatings, and campus and institutional buyers start with our commercial epoxy flooring team.
Yes, once it is moisture tested, repaired and ground; most old Claremont slabs coat well after that prep.
Polished concrete suits a studio that will not see cars, because there is no coating to wear through, while epoxy at 75 to 85 Shore D suits a parking garage.
A one-car garage floor is typically estimated at $1,500 to $3,600, and your written quote sets the final price after the slab inspection.
Usually not, since an interior floor coating is not an exterior design change, and Claremont is one of 11 places we serve where we flag that question during the site visit.
Yes, we phase kitchens over the slowest days, as with Elaine's Sunday to Tuesday install, the same approach our crews use on kitchens and clinics in Riverside and Diamond Bar.
Most single detached garages take an estimated 1 to 2 days, and a polyaspartic floor is typically ready to park on after roughly 24 to 36 hours.
Residential customers pay a deposit capped at $1,000 or 10% of the contract, whichever is less, the same terms we use in Woodcrest and El Sobrante.
Request a free estimate and we will inspect your slab, measure the garage or room and hand you a written, itemized quote.
Your local contact
Names, photos and stories are on our about page.
Location manager covering Claremont
Runs the Claremont 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.
