Riverside Epoxy Flooring Group is Los Angeles County's premier specialist in hillside home and estate floor coatings, specializing in designer metallic epoxy, multi-car flake garage systems, and textured pool deck coatings. We offer seamless coved clinic floors and scratch-resistant polyaspartic clears.
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Our team provides crack stitching on settled slabs, delivering showpiece lower levels for homes and wipe-clean operatories for both residential and commercial projects. Over 12 years in business we've completed over 1,187 projects under our 2-year workmanship warranty, from a single sloped pool surround to a four-car estate garage.
From grinding a settled game-room slab flat for a metallic pour to coating a deck that steps down the hillside, our team handles every detail. Serving Diamond Bar and neighboring Claremont, Yorba Linda and San Antonio Heights, we quote a 1960s tract garage and a guard-gated estate with the same written scope.
Book a free estimate, and our Claremont location manager will meet you at the gate or the garage door to measure.
Kevin, The Country Estates, Diamond Bar
A lower-level game room on an old slab with a long settlement crack
Rachel, hillside tract off Grand Avenue, Diamond Bar
A dental suite moving off sheet vinyl with seams that held grime at the chairs
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
What you can hold us to
Kevin's lower-level game room and wine room in The Country Estates sat on an old slab with a long settlement crack running through the middle of it. We stitched and filled the crack, ground the slab flat and poured a designer metallic epoxy in pearl and bronze under a high-gloss clear, about 640 sq ft in all. The floor was an estimated $6,800 to $10,400 over an estimated 3 to 4 days, and the old crack is gone from view under a seamless pearl and bronze finish.
Rachel's dental suite, about 1,400 sq ft in a hillside tract off Grand Avenue, was moving off sheet vinyl whose seams held grime around every chair. We installed a seamless light gray epoxy with an integral cove base and an antimicrobial-ready topcoat, working Friday to Monday so no patient days were lost. It was an estimated $7,800 to $11,600 job across an estimated 3 to 5 days, and each operatory now wipes down in one pass with no seams at the chairs.
Diamond Bar garages span six decades of slabs, and the age of the tract tells us most of what the prep will be. Transamerica bought the old Diamond Bar Ranch in the 1950s and built it into one of the nation's first master-planned communities, with the first houses going up in 1959 and the Pomona Freeway following about ten years later. The city incorporated on April 18, 1989, and today its housing climbs the hills that overlook Diamond Bar Boulevard on both sides.
A 1960s or 1970s slab on a cut-and-fill hillside lot often shows settlement cracks, old oil and a builder paint that has long since worn through. Those slabs get chased and filled, then ground to a CSP 2 to CSP 3 profile before any coat goes down. Newer 1980s streets near Grand Avenue usually need less crack work and more removal of failed DIY coatings, which we grind off as the first step of the floor job.
The Country Estates is a 24-hour guard-gated community with estates of about 1.8 to 4 acres and equestrian trails, and its garages are the largest we coat in Diamond Bar. Owners there often want a floor that reads as part of the house, which is why metallic floors and double-broadcast flake are the two systems we quote most behind the gate. A designer metallic floor is typically estimated at $4,500 to $12,000 for 400 to 800 sq ft, and it needs a mirror-flat slab because every flaw shows through the pour.
Big garages also mean more vehicles moving in and out on hot days. Diamond Bar has recorded highs up to 113°F, and summer daytime highs average near 92°F in August, so the clear coat on an estate garage must be rated for tire contact heat from 140°F to 180°F. Near the door, where a wet shoe or a hose meets a glossy finish, we blend grit into the clear for a slip resistance of 0.60 to 0.85 DCOF.
A hillside pool deck in Diamond Bar takes full afternoon sun, pool water and bare feet, so it needs a light, textured, UV-stable coating rather than a garage system. We repair any spalled edges at the coping, then lay a UV-stable polyaspartic with quartz or flake texture that stays cooler underfoot and grips when wet. Decks that step down a slope get each landing coated as its own pour, with a clean edge at every riser. A patio, porch or pool deck coating is typically estimated at $1,200 to $4,000 for 200 to 400 sq ft and takes an estimated 1 to 2 days.
A three-car full flake garage in Diamond Bar is typically estimated at $4,200 to $7,200, and slab settlement, finish choice and garage size move the price most.
| Diamond Bar job | Est. investment | Est. time on site |
|---|---|---|
| Three-car garage, full flake system | Est. $4,200 to $7,200 per garage | Est. 2 to 3 days |
| Designer metallic epoxy floor | Est. $4,500 to $12,000 per floor | Est. 3 to 4 days |
| Patio, porch or pool deck coating | Est. $1,200 to $4,000 per area | Est. 1 to 2 days |
| Clinic or commercial floor section | Est. $5,500 to $14,000 per section | Est. 3 to 5 days |
| Two-car garage, full flake polyaspartic | Est. $2,800 to $6,200 per garage | Est. 1 to 2 days |
With a median owner-occupied home value of $902,200 (ACS 2024 5-year), most Diamond Bar owners we meet choose the full flake or metallic tier rather than a solid color. California caps a home improvement deposit at $1,000 or 10% of the contract, whichever is less, and our residential deposits never go above it.
All of these numbers are estimates for Diamond Bar and are subject to change. The written quote we hand you after measuring sets the final price and the install schedule, based on crack repair, the system you choose and the square footage.
Estate owners lean toward metallic epoxy floors for game rooms and showcase garages, tract owners usually pick flake and chip floors for daily parking, and sloped yards get patio and pool deck coatings built for sun and wet feet.
Our Claremont location manager runs every Diamond Bar job, from the gate list at The Country Estates to the final walkthrough, and our lead installer times each metallic pour himself. Every floor is built on 80% to 100% solids basecoat, every topcoat is a UV-stable aliphatic polyaspartic, and the 2-year workmanship warranty covers peeling, delamination and hot-tire pickup.
We work across Diamond Bar from the tracts along Pathfinder Road and Golden Springs Drive to the estates behind the gate, roughly 39 minutes from our Riverside base. The same week, our crews are often at Claremont garages and studios to the north or Yorba Linda three-car garages to the south, and our full list of service areas shows the rest.
Diamond Bar practices book our medical, dental and clinic floors crew for weekend installs, homeowners finishing a whole room call on garage makeover packages, and simpler parking floors start with garage floor epoxy coating.
A designer metallic floor is typically estimated at $4,500 to $12,000, and your written quote sets the final price once we see the slab.
Yes, we stitch and fill the crack and grind the slab flat first, as we did in Kevin's game room in The Country Estates.
Yes, we arrange gate access in advance and keep trucks and grinders to the approved hours.
A light, textured UV-stable polyaspartic, because it stays cooler in the sun and grips with wet feet.
Yes, we install over a weekend, Friday to Monday, so patient days are not lost.
A three-car full flake garage takes an estimated 2 to 3 days, and cars typically return after roughly 24 to 36 hours on polyaspartic.
We ask for no more than 10% of the contract or $1,000 up front, whichever is less, and the rest comes due as the floor goes in.
Call us today, and we will measure the garage, deck or suite and hand you a written, itemized quote.
Your local contact
Names, photos and stories are on our about page.
Location manager covering Diamond Bar
Runs the Diamond Bar 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.
