FAQ
Concrete and Masonry in Mission Hills, answered
The questions we hear most from Mission Hills homeowners.
Compacted base does. Native soil is stripped of loose material and organics, then crushed aggregate is spread and run over with a plate compactor or roller in lifts so the whole thing sits tight rather than fluffy. That base spreads the load, gives water a path to move, and stops the slab from settling unevenly later. Skipping it is the most common reason a patio or driveway develops a low corner within a few seasons. We also confirm the subgrade drains before any steel or forms go in.
It changes almost everything about the layout. Much of Mission Hills sits flat, but the ground rolls and rises gently as you move north, so two houses a few streets apart can call for completely different work. On a lot with real grade we may cut and fill, add a low wall to hold a level pad, or break a patio into two elevations joined by steps. On a flat lot none of that applies, and the entire job becomes about setting a deliberate fall so water leaves the surface. We shoot elevations before drawing anything.
Both have a place, and the placement matters more than the choice. Driveways and anything carrying vehicle weight get rebar on a grid, tied at the intersections. Patios and walkways often take welded wire mesh or a lighter bar layout. Either way the steel is lifted onto chairs so it sits inside the slab thickness instead of resting on the dirt, where it does nothing at all. Steel does not stop concrete from cracking. What it does is hold the two sides of a crack together so the surface stays level and tight.
Load decides thickness. A walkway or a simple patio carries foot traffic and does fine at standard residential flatwork thickness. A driveway carries cars, occasionally a delivery truck, and needs to be poured heavier with reinforcement sized to match. Where a driveway meets the street, or where an RV or trailer parks, we thicken further and pay closer attention to the base underneath. Thickness without compaction is wasted money, so the two get specified together rather than treated as separate decisions.
Concrete shrinks as it cures, and shrinking material held down by friction against the base has to relieve that stress somewhere. Cracks are not a defect, they are physics. Control joints are weakened lines cut or tooled into the slab so the crack happens where we chose rather than diagonally across the middle. Joints go in on a spacing tied to slab thickness, they follow the shape of the pour, and they land at inside corners where stress concentrates. Expansion joints separate new work from walls, footings and existing paving.
They pull water out of the surface faster than the slab wants to give it up. Full sun and dry heat can skin the top while the body of the pour is still soft, which leads to surface crazing, dusting and a weak finish. Timing helps, so pours are scheduled early and the finishing sequence is adjusted to the conditions of that day. After troweling, the slab is kept moist or covered so it cures rather than dries. Curing is what gives concrete its strength, and it is the step most often shortchanged.
Broom finish is the workhorse. It is inexpensive and the texture gives grip where water lands, which is why it shows up around pools so often. Exposed aggregate washes the surface paste back to reveal the stone, giving a durable, mottled look with good footing. Stamped concrete presses pattern and texture into the fresh slab to imitate stone or plank. Integral color mixes pigment through the whole batch rather than dusting it on top, so wear does not expose gray underneath. We match the finish to how the surface will actually be used.
Sealing is optional on a plain broom finish and close to mandatory on decorative work. Stamped and colored slabs rely on a sealer to hold color, resist staining and keep the pattern looking rich. Exposed aggregate benefits as well. On a pool deck the sealer needs to be a type that does not turn slick when wet. Sealers wear off under sun and traffic, so plan on reapplication as part of ownership rather than a one time step. We tell you which product went down so it can be matched later.
It starts below grade. A trench is dug to firm soil, a footing is poured with horizontal rebar in it, and vertical bars are set to project up out of that footing on a spacing tied to the wall. Block is laid in mortar over those bars, cells are aligned, and every cell holding steel is filled solid with grout so the wall becomes one reinforced unit rather than a stack of masonry. Caps finish the top. A wall built without grouted cells and vertical steel is a wall waiting to lean.
Soil pushes sideways, and the wall has to resist that push rather than simply look solid. On the gently rising ground north of the flatter part of Mission Hills, most of what we build is low retaining walls holding a usable pad or terrace. Each one gets a footing sized for the height and the soil, vertical rebar carried out of that footing into grouted block cells, and drainage behind it. The grade here is mild, but mild grade still generates real pressure once the ground behind the wall is saturated.
Water is the thing that fails walls, not weight. Behind the block we place clean gravel backfill so water can move downward instead of sitting against the masonry, and a perforated drain pipe at the base carries it out to daylight or to a collection point. Weep holes through the face give a second path. Filter fabric keeps soil from washing into the gravel and blinding it. Runoff coming down the mild grade in this area is not dramatic, but it is persistent, and a wall with no drain becomes a dam.
Above a certain height, yes, and the same applies when a wall carries a surcharge such as a driveway, a slope or a structure sitting above it. In those cases the wall needs a design prepared by an engineer and a permit pulled before construction. Low garden walls holding a modest change in grade usually fall below the threshold. Because the answer depends on measured height and what sits behind the wall, we take those measurements during the site visit and tell you which category applies before anything is scheduled.
The apron is the piece between the sidewalk or curb and your property line, and that strip sits in the public right of way rather than on your land. Work there falls under a separate permit from the agency responsible for the street, and inspection requirements come with it. The portion of the driveway inside your property is treated differently. We identify where the line falls, handle the paperwork for the right of way portion, and pour both sections so they meet cleanly instead of stepping at the joint.
On flat ground nothing drains by accident, so drainage becomes something we build rather than something the site provides. Slabs are poured with a deliberate fall away from the house and toward a chosen exit point, and that fall is set with a level before the concrete arrives, not eyeballed afterward. Where water has nowhere obvious to go, we add area drains or a channel drain at the low edge and pipe it out to the street or another suitable outlet. Level lots in this part of the Valley live or die on that planning.
That is one of the better uses for it. Where ground rolls upward toward the north, a yard that feels awkward as one continuous slope becomes genuinely usable once it is split into two or three level areas connected by poured steps. Each level gets a low wall holding the change in elevation, and treads and risers are formed to a consistent dimension so the climb feels natural underfoot. Terracing also lets each level drain on its own instead of sending everything toward the bottom of the property.
Yes, and veneer is usually the least expensive way to change how a wall reads. It is mortared onto a structural block or concrete backing, so the block does the work while stone or brick handles appearance. Seat walls are built like any reinforced wall, sized for comfortable sitting height, then capped with a smooth material that is pleasant to sit on. Pilasters break up long runs and give a place for lighting, caps or a gate. All of it needs planning before the footing is poured.
We do. Daniels Landscaping works with one licensed contractor. The same people who set the forms and compact the base are the people who tie the steel, place the concrete, finish the surface and lay the block. That matters on masonry more than almost anything else, because the quality of a slab is decided in the hours around the pour, and there is nobody to point at afterward. One crew, one standard, one company answering for the result.
Call Daniels Landscaping at (818) 443-9300 and we will set a time to walk the property. During that visit we shoot elevations, look at where water currently goes, check access for equipment and material, and talk through finishes, wall heights and whether anything you want requires an engineered design or a permit. You then receive a free written estimate that lists the scope in plain language rather than a number scribbled on a card. Daniels Landscaping holds California license 1138709, and the estimate is yours to keep with no obligation.