Jurupa Valley Concrete Pro repours garage and shop floors at 4 inches under cars and 5 to 6 under a work truck, over a 10-mil vapor barrier, with the joints sawn on a 12-foot grid the day it is placed.
5.0 Stars Rated by our customers · Google, Facebook and the BBB
Floors built for what parks on them
Half the floors we take out in this city are not in houses at all, and an outbuilding floor carries weight a spare room never sees: a one-ton truck, a boat on its trailer, a pallet of tile stacked where the mixer left it. What holds that up is depth, steel and a base compacted in layers, all of it decided before the mixer is booked. None of the three can be added to a floor afterward, which is why the concrete is the last part of this job rather than the first.
Behind the work is a crew that has poured on this ground since 2025. Daniel Reyes came to it after 12 years finishing flatwork across the Inland Empire, and he is in the building for the screed and the trowel on every floor. The buildings themselves split two ways here: detached garages, shops and equipment barns standing at the back of the older lots in Rubidoux, Pedley and Glen Avon, and attached three-car bays on the newer tracts off Limonite and Van Buren.
Every floor here is placed under a CSLB C-8 concrete license, with liability insurance on every job. Whether a slab replaced in a garage that stays a garage needs filing is a counter question we ask. A garage or shop becoming a room is not: that floor is drawn and signed off by the Building and Safety Department. Many of these went up before the city incorporated in 2011, so records are worth a look. Every floor carries a written workmanship guarantee against defects in how it was built.
Warning signs
Park in the same spot for twenty years on a slab over loose river sand and the concrete follows the ground down. It shows first as a puddle that will not sweep out, then as a lip at the joint where one panel has dropped below its neighbor. Nothing laid on top brings that level back.
An outbuilding floor poured flush to its walls with no thickened edge beneath them has nothing carrying load at its perimeter. The concrete flakes away in curved pieces where a wheel crosses, the sill plate loses its bearing, and the opening spreads until the door binds in its track.
Put a tape on the concrete at any crack. Plenty of the pre-2011 outbuildings here measure 3 inches or less, laid straight on graded dirt with no mesh in them. Three inches holds a car and nothing heavier, so the first loaded trailer to stand on it starts a crack that keeps running.
Hose the floor out and watch where the water goes. A slab that pools at the back instead of running to the opening was built flat or has settled that way, and the water then wicks into the bottom plate, the drywall and whatever is stacked against it all winter.
What is included
Eight things on every floor we pour, none of them a line added to the estimate later. Each answers something a building in this city does to concrete: heavy things stand still on it for months, and the ground under half the city drains fast and keeps settling.
Saw-cut free of the walls, taken up in pieces and barrowed out through the door, with the whole lot hauled off before the crew leaves.
Class 2 base brought in and rolled in two lifts to the depth the slab needs, then tested with a probe bar across every part of the footprint.
Sheeting laid over the base before a barrow moves, taped at the laps and dressed up the stem wall, because a barrier with an open seam is not one.
Twelve inches deep around the perimeter and under any lift column, which is what most of the pre-2011 outbuildings here were never given.
Four inches under cars and 5 to 6 where a truck or a trailer stands, in 3,500 psi mix with number 3 rebar tied at 18 inches and held on chairs.
Cut a quarter of the slab depth on the day of the pour, in panels close to square, so the shrinkage follows a line somebody chose for it.
The floor is shot to drain toward the opening at an eighth of an inch per foot, checked against the apron outside before any forms are set.
The cured slab takes a penetrating sealer, and you walk the finished floor with Daniel Reyes before the written guarantee is handed over.
Your options
Sorted by what stands on the floor, because in this city that is usually heavier than a second car. A work truck, a boat trailer or a welding bench decides the depth first, and the depth then decides which of the finishes below is worth laying at all.
| Option | What stands on it | Working life | Looking after it | Building empty for |
|---|---|---|---|---|
| Sealed 4-inch slab | Cars, a workbench and stored gear | 40 years or more | Reseal every 2 to 3 years | 2 days, then 7 to cure |
| Six inches with steel | Work trucks, loaded trailers, a bolted lift | 40 years or more | Same sealer, degrease spills that week | 2 days, then 28 to load |
| Epoxy over a new slab | Whatever the concrete beneath it holds | Coating lasts 8 to 12 years | Patch where dropped steel chips it | 2 days, then 11 to coat |
| Grind, densify and seal | Only a floor still flat and 4 inches up | Buys back 8 to 10 years | Degrease and reseal every 2 years | 2 days, nothing to cure |
Only the 6-inch build takes a two-post lift bolted down to it. Grinding an existing floor costs least to do and buys the fewest years back.
Local knowledge
Half the floors we repour in this city are not in houses. They are in detached garages, shops and equipment barns on lots of half an acre and up, and they are worked for a living.
Jurupa Valley only became a city in 2011. Rubidoux, Pedley, Glen Avon, Mira Loma and Sunnyslope spent the century before that as unincorporated county land, and an outbuilding on one of those lots went up to whatever its owner was prepared to pour. We routinely break out shop floors at 3 inches with no mesh, no barrier and no thickened edge under the walls, placed by somebody who had a mixer for a weekend. They survived because nothing heavy stood on them until a business moved in.
Then there is what sits underneath. On the flats beside the Santa Ana River the ground is river-bottom sand, which drains well and goes on consolidating under a standing load for years after a pour, so the corner where a trailer lives slowly writes its own dip. Up on the older terraces the subsoil is clay that swells above an Expansion Index of 20. Neither is answered by adding concrete: the ground comes out, goes back in layers and is compacted before anything is placed on it.
Our process
Five stages, one crew, and one written figure that does not move after the concrete is ordered. You empty the building; the saw cut, the base, the pour and the sealer are ours, and so is the permit where the floor is becoming a room.
Daniel Reyes tapes the building, shoots the fall to the door and breaks a test hole to read the thickness and what the old slab was laid on.
You settle 4, 5 or 6 inches against what stands on the floor, and a conversion floor is drawn and submitted before any date is booked.
You empty the building, we saw the slab free of the walls, break it up inside and barrow every piece out to the truck the same day.
Base rolled in two lifts, the 10-mil taped down over it, the rebar set on chairs, then the concrete poured, struck off and power troweled.
Joints cut the same day, the slab kept damp a full 7 days, then sealed, and you walk the floor with Daniel Reyes for the guarantee.
What moves the estimate
Floor area starts the number and the depth follows the load, and between the two sits the state of the ground the old slab was laid on. A two-car bay and a 1,200-square-foot shop are one job at different sizes. Every estimate is measured and written on site.
A two-car bay runs about 440 square feet and a detached shop on a half-acre lot can be three times that, with the joint grid set out to match.
Cars take 4 inches. A work truck, a loaded trailer or a bolted lift takes 5 to 6 inches, heavier steel and a thickened pad cast beneath it.
A slab laid on bare dirt means base and a barrier that were never bought. One on sound compacted base is a straight swap at the same level.
A sealer is the baseline, included on every floor. Epoxy is a separate visit after the cure, and a converted floor adds drawing and inspection.
Nothing is figured off a photograph and nothing is owed for the visit. Tell us what parks in there, and someone rings back within 1 business day with a date. (951) 903-5460 or send us a message.
Use the form or call the office, and someone rings back within 1 business day with a date. Daniel Reyes breaks a test hole in your own floor, writes the depth, the base and the total on the spot, and you keep the sheet either way.
Reviews
Three reviews from Google, Facebook and the BBB, each of them about a floor inside a building rather than the driveway leading up to it.
“Our shop out back was poured by the previous owner sometime in the eighties and it was barely three inches with nothing in it. They took the whole thing out, put base and plastic under the new one and poured it six inches. I stand the dump trailer on it loaded now.”
“The two-car garage had dropped nearly an inch where we always parked the truck and you could feel the lip crossing it. Daniel showed me the sand under the old slab in the test hole before he quoted. New floor sawn into panels the same afternoon and it has not moved since.”
“The garage is becoming a room for my son, and the floor turned out to be the part that needed drawing and inspecting. They handled the submittal, poured it with the insulation at the edge and were there when the inspector came. It went through first time and the flooring laid straight on it.”
FAQ
Depth, the ground underneath, joints, coatings, the permit and the wait before you can drive on it, answered for the garages and shops in this city.
Area first, then depth, then what the test hole finds under the old slab. A two-car bay is about 440 square feet and a detached shop can be three times that; 6 inches with rebar is more concrete and more steel than 4; and a floor laid on graded dirt needs base and a barrier that were never there. Every estimate is measured and written on site, which is how the number ends up specific to your building.
Two working days for a two-car bay, and then the cure. The old slab comes out and the base goes in on the first day, the pour and the power trowel are the second, and the joints are sawn that same afternoon. You can walk on it at 48 hours, drive a car in at 7 days, and stand a loaded trailer or a work truck on it at 28 days, by which point the concrete has its full design strength.
Four inches under cars, and 5 to 6 inches wherever a work truck, a two-post lift or a loaded trailer stands, with a thickened pad cast under the lift columns. The heaviest thing that will ever sit still on the floor picks the depth, not the footprint of the building, and it is the one call nobody can revisit once the slab is down. The number we pour to goes on your estimate.
Replacing a floor in a garage that stays a garage is not named on any exempt list, so we ask the counter rather than assume it. Converting that space into a room or a unit certainly is permitted work: the floor becomes part of a habitable space, so it is engineered, permitted and inspected by the Building and Safety Department. Buildings older than the city itself are worth a records check first.
Because much of the city sits on river-bottom sand carried down by the Santa Ana. Sand drains beautifully and takes years to finish consolidating under a load that never moves, so the corner where a trailer or a camper is parked keeps going down long after the pour. Compacting base in layers before the slab is placed settles that in two days instead of two decades. Look your own lot up on the USDA Web Soil Survey.
No, because the contaminated concrete leaves on the truck. Oil only soaks into bare concrete, so what matters afterward is the sealer that goes on once the slab has cured: a drip then sits on top for long enough to be wiped away. Reseal every 2 to 3 years, sooner where vehicles get worked on in there, and degrease a spill in the same week rather than at the end of the season.
Not over a slab that has settled, measures under 4 inches or was laid with no barrier beneath it. A bonded topping inherits whatever it is stuck to, so the crack underneath prints through inside a season. It also raises the surface, putting the roll-up door and the fall out to the drive at the wrong height. Where the old concrete really is sound, saw cutting a joint grid into it costs less.
They come off the floor and go back on it, and that is trade time either side of the pour rather than concrete time. A water heater in a garage stands on an 18-inch platform, which we form and cast as part of the new slab instead of stacking one on top afterward. Anything plumbed or wired is disconnected and reconnected by that trade, and the estimate names who is doing it before you sign.
Service area
The nearest towns on the coverage list, with the straight-line distance from the Limonite Avenue office beside each. Each name opens its own page.
Four jobs looked at while the tape is already out in your building: what the floor runs into at the threshold, and what it becomes if the space changes use.
The apron and drive on the other side of the threshold, brought up to the new level.
Interior slabs for a workshop, a studio or a garage that is becoming a room.
The thickened edge under a garage or shop wall, dug and poured before the floor.
Saw work to lift one panel or open a doorway where the rest is still sound.
Two minutes on the form, or call the office. We tape out the building, open a test hole to see what is under the old slab and leave the depth and the total in writing, with nothing owed if you go no further.