Riverside Epoxy Flooring Group is Orange County's leading specialist in coatings for older concrete slabs, specializing in moisture-mitigating epoxy primers, interior concrete floor coatings, and heavy-build workshop epoxy. We offer garage flake systems and polished concrete.
Get a free floor estimate
Our team provides slab moisture testing before any system is chosen, delivering blister-free floors for homes and durable work surfaces for both residential and commercial projects. Backed by 12 years in business and our 2-year workmanship warranty, we've completed over 1,187 projects, from a one-car solid color garage to a phased plant floor.
From a calcium chloride moisture test on a slab poured with no vapor barrier to the final satin clear coat, our team handles every detail. Serving North Tustin and neighboring Villa Park, Yorba Linda and Diamond Bar, we start every older-home job with the slab, not the color chart.
Book a free estimate, and our Orange County location manager will test your slab for moisture on the first visit.
Steven, Lemon Heights, North Tustin
A 1960s ranch home with carpet pulled off a slab poured without a vapor barrier
Linda, Cowan Heights, North Tustin
A detached woodshop with oil-stained, dusty concrete that never came clean
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
What you can hold us to
Steven's 1960s ranch home in Lemon Heights now has a seamless warm gray floor across about 820 sq ft of family room and hall, an estimated $5,200 to $7,600 project that typically took 2 to 3 days. The carpet had come up off a slab poured without a vapor barrier, so we ran a calcium chloride moisture test, laid a moisture barrier primer, then the color coat and a satin clear, and the floor will not blister when the ground stays damp in winter.
Linda's detached woodshop in Cowan Heights got a gray heavy-build epoxy with aluminum oxide grit over about 540 sq ft, an estimated $3,600 to $5,400 job that typically ran 2 to 3 days. Her oil-stained, dusty concrete never came clean, so we degreased and ground it first, and sawdust now sweeps off in one pass with the old stains sealed under the coating.
North Tustin floors start with a moisture test because most homes here are 1950s and 1960s ranch homes, built on slabs that often have no vapor retarder under them. North Tustin is an unincorporated community, the largest in Orange County, about 25,700 people across Cowan Heights, Lemon Heights, Panorama Heights, Red Hill and East Tustin, and it was called Tustin Foothills until 2005. When ground moisture pushes up through an old slab, a coating sealed on top blisters and lifts, which is the failure we see most on floors that were coated without a test.
Our rule is simple, and it is the same from Riverside to Norco: any slab that reads above the 3 lb vapor emission threshold gets a moisture-mitigating epoxy primer before a color or flake coat goes down. That primer is why Steven's Lemon Heights floor is a living-room floor and not a repair call.
A North Tustin garage is often smaller than a newer tract garage and doubles as a shop, so the floor has to take jack stands, tools and oil, not just two parked cars. We coat these with a basecoat of 80% to 100% solids by volume and a hardness of 75 to 85 Shore D, so a dropped wrench does not gouge it. On the quarter-acre lots around Red Hill and the ranch homes off the hills, detached workshops and hobby garages are common, and we quote them as a separate floor on the same visit. Park-on time is typically 24 to 36 hours on polyaspartic and 72 to 96 hours on 100% solids epoxy, which matters when the garage is also the shop.
A garage or interior floor in North Tustin is typically estimated at $3,800 to $8,000 for an interior slab with a moisture barrier on 600 to 1,000 sq ft, and the moisture reading, the old floor covering and the square footage move the price most. Grinding off old carpet glue, tile mastic or a failed coating is typically estimated at $800 to $3,000 per floor and shows as its own line.
| North Tustin job | Est. investment | Est. time on site |
|---|---|---|
| Interior slab floor with moisture barrier (600 to 1,000 sq ft) | Est. $3,800 to $8,000 per floor | Est. 2 to 3 days |
| Workshop or home gym floor (400 to 576 sq ft) | Est. $2,200 to $5,800 per floor | Est. 2 to 3 days |
| Two-car full flake polyaspartic garage (400 to 576 sq ft) | Est. $2,800 to $6,200 per garage | Est. 1 to 2 days |
| One-car solid color epoxy garage (288 to 392 sq ft) | Est. $1,500 to $3,600 per garage | Est. 1 to 2 days |
The median owner-occupied home value in North Tustin is $1,347,800 (ACS 2024 5-year), among the highest in our 45-mile service radius, and a tested, primed floor is how an older home keeps a coating for the long run. North Tustin deposits stay within California's limit of $1,000 or 10% of the contract price, whichever is lower.
These prices are estimates for North Tustin and are subject to change. Your written quote after the moisture test sets the final price and the schedule, based on the reading, the floor size and the system you choose.
North Tustin owners usually choose interior concrete floor coatings for a family room or converted garage, polyaspartic garage floors for a fast return to parking, or polished concrete where the old slab is sound and they want no coating at all. Every garage topcoat we use is a UV-stable aliphatic polyaspartic clear coat that will not amber in the sun through an open garage door.
Our owner has read the moisture test on every one of our 1,187 projects himself, which is why no older slab gets coated on a guess. Our Orange County location manager books and runs every North Tustin, Villa Park and Yorba Linda job, and our surface prep technician grinds every slab to a CSP 2 to CSP 3 profile instead of acid etching. Each floor carries our 2-year workmanship warranty against peeling, delamination and hot-tire pickup, plus the coating makers' product warranties, typically 5 to 10 years on professionally installed systems, passed through to you in writing.
We work every part of North Tustin, from Lemon Heights and Cowan Heights to Red Hill and Panorama Heights, and the same crew covers Villa Park estate garages, Yorba Linda homes and Claremont Craftsman slabs. See every city and community we serve on our service areas page.
North Tustin owners with a detached shop often book our shop, barn and workshop floor coatings, the same system we lay in Woodcrest tack rooms, and garages that only need a tough parking floor get our garage floor epoxy coating system.
Yes, most 1950s and 1960s slabs here were poured without a vapor retarder, so we test every one before a coating is chosen.
An interior floor with a moisture barrier is typically estimated at $3,800 to $8,000 for 600 to 1,000 sq ft, and your written quote sets the final price after the test.
Yes, we grind off the old adhesive and tack strip residue, test the slab, then coat it, as we did in Steven's Lemon Heights family room.
Most interior floors with a moisture barrier take an estimated 2 to 3 days on site, with walk-on time typically 18 to 24 hours after the last epoxy coat.
Yes, a detached shop like Linda's in Cowan Heights is quoted as its own floor under our workshop, barn or home gym floor line, typically with heavy-build epoxy and grit.
Yes, every North Tustin neighborhood is on our Orange County route.
Call us today to book a free visit, and we will test your slab, show you samples and hand you a written, itemized quote for your North Tustin floor.
Your local contact
Names, photos and stories are on our about page.
Location manager covering North Tustin
Runs the North Tustin 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.
