Riverside Epoxy Flooring Group is the Inland Valley's trusted expert in polished concrete floors, specializing in multi-stage diamond grinding, penetrating densifier treatments, and satin to high-gloss slab polishing. We offer salt and pepper aggregate exposure and cream-finish polished floors.
Get a free floor estimate
Our team provides stain-resistant guard sealers over the polish, delivering a natural, low-upkeep floor for homes and a hard-wearing slab finish 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 single casita studio to open-plan modern homes and small showrooms.
From the first metal-matrix diamond pass that flattens an old slab to the final burnish that brings up the sheen, our team handles every detail. Serving Claremont and neighboring Diamond Bar, Eastvale and Norco, we grind a test patch on your own slab so you see its aggregate before you commit.
Call us today for a free estimate, and we will grind a test square to show what your slab holds.
What you can hold us to
Nathan, Craftsman bungalow near the Village, Claremont
A detached garage being turned into a studio on an old, uneven slab
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
Nathan's Craftsman bungalow near the Village in Claremont had a detached garage being turned into a studio on an old, uneven slab. We ground it in stages to flatten the worst of it, densified it and polished it to a satin sheen, leaving a ground and polished slab, penetrating densifier, satin guard across the converted garage studio, about 620 sq ft. Nathan's floor was an estimated $4,200 to $6,400 and took an estimated 2 to 3 days on site. He kept the old slab's character, with a soft sheen and no coating to wear through.
Polishing changes the slab itself instead of covering it, and a typical residential floor takes an estimated 2 to 3 days of grinding, hardening and polishing.
A polished slab has no topcoat to peel, no coating that must be Rated for tire contact heat from 140°F to 180°F and no moisture blistering, because nothing sits on top to fail.
Sheen and aggregate exposure are chosen up front, because they decide how deep the first grind goes and that cannot be undone. Cream finish barely touches the surface and keeps the smooth gray top, salt and pepper shows fine sand, and full aggregate cuts deep enough to show the stones.
| Choice | What you see | Typical fit |
|---|---|---|
| Cream finish, satin sheen | Smooth gray, soft glow | Modern homes, casitas |
| Salt and pepper, semi-gloss | Fine sand speckle | Studios, ADUs, offices |
| Full aggregate, high gloss | Exposed stones, mirror shine | Showrooms, statement rooms |
Older slabs often decide for you, since a slab that has been patched or troweled unevenly, like many under Claremont Craftsman bungalows, rarely gives a clean cream finish, so salt and pepper hides more.
Polishing suits slabs in good condition, not badly damaged ones. A sound, reasonably flat slab with few patches is the ideal, and new pours in modern homes and ADUs in Yorba Linda and Villa Park are the best of all.
The risks show up on three kinds of slab. Deep cracks and patches stay visible after polishing, because a polish reveals the slab instead of hiding it. Slabs with old glue or paint need that ground off first, and stains soaked deep into the concrete may stay. A badly spalled or heaving slab is better under a coating, such as an interior concrete floor coating.
Polished concrete is the lowest-upkeep finish with no layer to wear, while a designer metallic epoxy floor or another coating gives more color and more stain protection. In a garage, a coating such as a two-car garage floor, full flake polyaspartic usually wins, because oil, brake fluid and hot tires are hard on a bare slab. Indoors, in studios and casitas from Diamond Bar to Eastvale, polished concrete wins on cost of ownership.
A polished concrete floor is typically estimated at $3,800 to $8,000 for 600 to 1,000 sq ft, and slab condition, aggregate depth and sheen level move the price most. Nathan's 620 sq ft studio in Claremont, an estimated $4,200 to $6,400, sat in the middle because the old slab needed extra flattening passes.
Diamond grind, crack fill, 100% solids basecoat, clear topcoat
Full broadcast vinyl flake, UV-stable clear coat, park in about a day
Grind, stem walls optional, double broadcast flake, polyaspartic topcoat
Moisture-mitigating primer, then flake, color or polished finish
Hand-worked metallic pigment over a flat primed slab, high-gloss clear
Colored quartz double broadcast, textured slip-resistant topcoat
UV-stable polyaspartic with textured flake or quartz
Heavy-build epoxy for jacks, mats, tack and tools
Phased by section, high-build epoxy or quartz, cove and striping as needed
Failed DIY paint or peeling epoxy ground off before the new system
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
| Job | Est. investment | Est. duration on site |
|---|---|---|
| Polished interior slab (600 to 1,000 sq ft) | Est. $3,800 to $8,000 per floor | Est. 2 to 3 days |
| Old coating removal by diamond grinding, before polishing | Est. $800 to $3,000 per floor | Est. 4 to 8 hours |
| Interior slab floor with moisture barrier (coated alternative) | Est. $3,800 to $8,000 per floor | Est. 2 to 3 days |
Deeper aggregate exposure takes more passes, so a full aggregate high-gloss floor sits at the top of the estimate, and a cream satin floor at the bottom.
Every figure above is an estimate and subject to change. Your written quote after the test grind sets the final price and the schedule, and it depends on the slab's condition, the exposure you choose and the sheen.
Our owner walks every slab before we quote, and he will tell you when a slab should be coated instead of polished. In 12 years and over 1,187 projects across our 45-mile radius, our crews have learned to read an old slab's patches before the first pass. Each floor carries our 2-year workmanship warranty against peeling, delamination and hot-tire pickup, though on a polished floor there is nothing on top to peel.
For color without a coating, see concrete staining and sealing, and for a glossy showpiece look in one room, a metallic epoxy floor, typically installed in 3 to 4 days.
We polish slabs across Riverside County and the foothills, with studios and bungalows in Claremont, new-build homes in Eastvale and ranch casitas in Norco, plus Diamond Bar, Yorba Linda and Villa Park on our service area page.
A polished studio often sits beside a workshop, and owners add a workshop, barn or home gym floor coating there, where oil and tools would mark a bare slab.
A polished floor is typically estimated at $3,800 to $8,000 for 600 to 1,000 sq ft, and your written quote after the test grind sets the final price.
Most residential floors take an estimated 2 to 3 days, and you can walk on them the same day the polishing ends.
A polished slab with a guard is about as grippy as sealed stone when dry, and a satin sheen grips better than high gloss when wet.
Usually, if it is sound and fairly flat, and we grind a test square first to show you what it holds.
The guard sealer resists most spills if you wipe them up, while oil left for days can still darken the slab, which is why a one-car garage floor, solid color epoxy is the better pick where cars drip.
Indoors it is excellent, but for a garage with hot tires and oil we usually recommend a flake coating, typically installed in 1 to 2 days.
The most we can take up front in California is $1,000 or 10% of the contract, whichever is less.
Request a free estimate, and we will grind a test square on your slab and write an itemized quote for the floor.
Start to finish
We walk the slab with you, map cracks, joints and old coatings, and take moisture readings before a system is named.
The system, every coat and its thickness, the colors and the cure and return-to-service times arrive in writing.
The slab is diamond ground with dust control, cracks and joints are filled, and each coat goes down inside its recoat window.
We walk the cured floor with you, go over the care notes and tell you when cars or equipment can come back.
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.
