Ontario Concrete Pro pours driveways, patios and hillside walls in Glendora, a run west on the 210 from our yard in Ontario. Every estimate is measured and written on site, free.
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Glendora sits on the alluvial fan of the San Gabriel Mountains. The ground under a lot is what the canyons above it washed down, and the closer to the foothills, the larger the stones in it.
That fan drains well, which is why the older slabs here have lasted, but it is not even. A pad in the north of the city, up toward Big Dalton Canyon and Glendora Mountain Road, sits on cobble and gravel that needs no help to carry a driveway. South of the 210, toward Covina, the fan has thinned into finer soil that holds water after a winter storm and softens under the edge of a slab. The oaks add a third factor, since a root lifting a walk is the commonest failure around the Village.
So the specification follows the street. On the cobble in the north we excavate to firm material, screed 4 inches of base into the voids and pour on top of it. On the finer ground south of the freeway we compact the subgrade, lay 4 inches of Class 2 base and run number 3 steel on an 18 inch grid through the slab. Anywhere near a mature oak we cut a root barrier along the line before we form, so the tree keeps its roots and the slab keeps its line.
Glendora has been built for a century, from the citrus-era streets around the Village to the hillside lots under the San Gabriels, so most of what we pour here replaces a slab that has done its time on cobble and oak roots.
A driveway in Glendora is usually a replacement, since the tracts between Route 66 and the 210 were poured in the 1950s and 1960s and a slab of that age has cracked at the apron. We break out the old drive, compact 4 inches of base on the fan gravel and pour 4 inches on top.
Patios are poured against houses on the north side of Glendora as often as the south, and the difference is the slope. On a foothill lot we cut the pad level and drain the uphill edge before the base goes down, so a patio in Gordon Highlands is not where the hill drains to.
Stamped work in Glendora tends toward flagstone and slate patterns, because the older houses around the Village are stone-trimmed and owners want the walk to match the porch. We cast the pattern into a 4 inch slab, color it in the mix, and seal it in 2 coats.
Glendora walks are lifted by oak roots more than by soil, and the parkway trees the city keeps are the reason. Where the walk is city property we say so before we cut. On your side of the line we saw out the heaved panel, set a root barrier, and dowel in the new panel.
A garage floor in a 1960s Glendora tract was poured thin, and the ones we replace have cracked where the weight of the car sits. We take the slab out to the footings, compact base, lay a vapor barrier and pour 4 inches with steel on an 18 inch grid, flat enough to coat.
Decorative work in Glendora means an exposed aggregate finish more often than a stamp, because the stone in the mix reads well against the foothill houses and the citrus-era planting. We seed the surface, wash it at the right hour, and seal it against the dust of a fan lot.
Retaining walls are the foothill job in Glendora. A lot north of Sierra Madre Avenue is cut into the fan, and the cut face wants to move in the first wet winter. We foot the wall 18 inches into firm material, drain behind the stem, and engineer anything over 4 feet.
Interior slabs in Glendora are for the room added over a patio or the garage turned into a unit, both of which the state's ADU rules allow. We pour over a 10 mil barrier on compacted base, trowel it flat for tile or wood, and lay the joints out to the room, not to the crew.
Our yard is on Holt Boulevard in Ontario, and a crew reaches Glendora by going north on Euclid Avenue to the 210 and west to the Grand Avenue exit, a half hour on a weekday morning. Plans go to the Building and Safety Division at the City of Glendora, and a lot on a slope north of Sierra Madre Avenue is reviewed for grading before a footing is dug. We handle both and meet the inspector at each stage.
The houses tell you their decade. The streets around Glendora Avenue and the Village went up before the war on citrus money, with narrow lots and driveways sized for one car. The tracts between Route 66, which was Alosta Avenue, and the 210 date from the 1950s and 1960s and carry the slab most of our replacement work is for. North of Foothill Boulevard, in Morgan Ranch and Gordon Highlands, the lots are larger and sloped, with drives long enough that a pump saves a day over barrowing.
Water is the other thing the fan decides. Big Dalton Wash and Little Dalton Wash cross the city south from the canyons, and the county's flood control district keeps debris basins at the mouth of each, so a storm off the mountains arrives at a lot fast and leaves it fast. We grade every slab to fall away from the house toward the street, and we pour through the winter on any week the forecast is dry, because the ground here drains within a day of the rain stopping.
One crew, one measured figure, and a start date fixed once the permit is issued. On a foothill lot the order changes in one place only, since the slope is cut and drained before any base goes down.
Victor Salgado measures the slab, notes the fall of the lot, looks for roots and rock at the edges, and writes the figure before he leaves.
The old slab is broken and hauled the first morning, the subgrade is graded to fall away from the house, and 4 inches of base is compacted.
Where a wall, a footing or a curb approach needs one, we file with the City of Glendora and book the inspector before the pour.
Poured in one morning, joints cut the same day, walked on after 24 hours and driven on after 7. We leave the street swept behind us.
Call or send the form and we will call you back within 1 business day to fix a morning for the visit. Victor Salgado measures the job on your lot, and the written figure costs nothing, whether it is a walk in the Village or a wall in Morgan Ranch.
Reviews
Reviews left by homeowners across the towns we cover, Glendora among them. The drives, walks and walls behind them are the ones described above, poured by the same crew from the same yard.
“Our place off Euclid is from the 1920s and the drive still ran back to the alley. They replaced 400 square feet at 5 inches, matched the fall to the alley apron and cut the joints the same day. Victor was there from start to finish.”
“We built an ADU in the back garden and needed the slab done properly. They over-excavated the old dairy ground, brought in engineered fill and poured to the soil report. It passed inspection first time, which is not what I expected.”
“The warehouse yard on Jurupa Street was breaking up under the forklifts and we could not shut down to fix it. Ontario Concrete Pro poured 2,800 square feet at 6 inches over two weekends so we never stopped shipping. A year on the joints are still tight.”
What people in Glendora ask before they book, covering the ground on their side of the freeway, the city's permit counter, oak roots, cure times and how far the crew drives from the yard.
Tear-out first, then access. Most Glendora jobs replace a slab, and breaking out and hauling the old concrete is a bigger share of the work than pouring the new. A long sloped drive north of Foothill Boulevard adds a pump, and a mature oak beside a walk adds a root barrier. Every estimate is measured and written on site, so the figure comes off the tape and not off a chart.
Not for flatwork at grade in your own yard. Yes for a retaining wall over 4 feet, a footing that carries a roof, a driveway approach at the curb, and any cut into a slope. We submit to the Building and Safety Division at the City of Glendora and meet the inspector, and we pull the encroachment permit ourselves when a new approach touches the public sidewalk.
They will if the slab is laid over them. Glendora keeps its oaks, and a root under a walk lifts a panel within a few years of the pour. We cut a root barrier along the line before forming, keep the slab clear of the trunk, and cut joints where a root crosses, so any movement opens on a straight line rather than through the middle of a panel.
Yes. North of the 210 the lots sit on the coarse part of the San Gabriel fan, cobble and gravel that drains as fast as it wets, and a slab there needs base to fill the voids more than it needs steel. South of the freeway toward Covina the fan has thinned to finer soil that holds a winter's water, so there the subgrade is compacted and the slab carries steel on an 18 inch grid.
Two to three days on site for a driveway or a patio, a week for a hillside wall with its drainage. Concrete takes foot traffic after 24 hours and a car after 7 days, and joints are cut within 12 hours of the pour. Tear-out on a 1950s tract drive adds the first morning, since the old slab has to be broken, loaded and hauled before the base goes in.
About 20 miles, north on Euclid Avenue and west on the 210 to Grand Avenue. That is a half hour before the morning traffic builds, and a crew is on site by 7. We are in Glendora most weeks, and the same run takes in San Dimas, La Verne and Claremont on the way back, so a small job here is booked in with a larger one rather than waiting for its own day.
Glendora shares a border with San Dimas, Covina and Azusa, and we cover the first two along with La Verne and Claremont further east on the 210. If your street sits on a city line, the page for that town says how the ground and the permit counter differ.
Open the Ontario Office in Google Maps Send the form and we will call you back within 1 business day. The estimate is free, and the work carries a written workmanship guarantee against defects in how it was built.