FAQ
Concrete and Masonry in Sun Valley, answered
The questions we hear most from Sun Valley homeowners.
Most of it was poured decades ago over a base that was never compacted the way we compact one now, and the reinforcement was often thin or missing altogether. Over time the soil beneath settles, the slab loses support, and sections tip or break at the weakest point. Once a slab has cracked through and the pieces move independently, patching buys very little. We take out the failed sections, rebuild the base in lifts, add steel, and pour to the thickness the actual use calls for. That is what keeps the new work flat.
It goes wherever we build the fall, because flat ground gives you nothing for free. Before forming, we set the finished elevations so the slab drains away from the house at a consistent pitch and lands somewhere useful, whether that is a planted area, a swale or a collection point piped out toward the street. On a lot with no natural grade, collection matters as much as slope. We would rather add a drain and a run of pipe during the pour than watch a puddle sit against a foundation every winter.
Yes, and it is one of the more common reasons people here call about masonry. A grouted, reinforced block wall gives you a solid visual break, cuts the light spill from a lot that stays lit all night, and knocks down the dust and noise that drift across a shared line. We size the footing and the vertical steel for the height, fill the cells solid, and finish the face with stucco, veneer or a smooth cap depending on what you want to look at. Height limits and permitting go through the City.
Thicker concrete and an honest base. Where horses, trailers and utility vehicles cross a surface, we pour heavier flatwork, increase the steel, and pay close attention to the transitions where a slab meets dirt, since that edge is what breaks first. Broom finishes give far better footing than anything slick. Longer runs are normal in those pockets, so we plan joints and pour sections in a way that keeps the panels a sensible size. It costs a little more up front and it survives use that would chew up a standard patio slab.
Sun Valley is part of the City of Los Angeles, so permitting runs through Los Angeles Building and Safety. The portion of a driveway that crosses the sidewalk and parkway, the apron, sits in the public right of way and is handled separately from the private part on your own property. Retaining walls above a set height also require an engineered design and a permit. We tell you at the estimate which pieces of your project fall into that category so nothing stalls halfway through. We do not guess at it.
It affects the working conditions more than the concrete itself. On blocks with truck traffic and industrial frontage there is more airborne dust, and dust settling on fresh concrete can mar a finish, so we time the pour and protect the slab while it sets. Access matters too, since a mixer needs a clear approach and some of these streets stay busy through the day. We also look at what sits behind the property before recommending a finish, because a surface next to a commercial lot collects grit differently.
Concrete shrinks as it cures, and shrinkage puts it in tension, so it will crack somewhere. The job is deciding where. We cut or tool control joints at spacing based on the slab thickness, placed to break the pour into roughly square panels and to run through reentrant corners where stress concentrates. Cracking then happens down in the joint where you do not see it. Proper base support, correct water content in the mix and real curing handle the rest. A slab that cracks randomly usually failed on one of those, not on bad luck.
A walkway carries feet, so it is thinner and usually reinforced with mesh or light bar. A driveway carries vehicles, sometimes a loaded truck, and gets poured thicker with a heavier bar grid. What matters as much as the size of the steel is where it sits. Reinforcement laid flat on the ground does nothing. We set it on chairs so it stays near the middle of the slab where it can hold cracked pieces together. Thickened edges around the perimeter give the slab something to stand on where loads concentrate.
We excavate to depth, then build the base back in lifts and compact each one rather than dumping it all at once and running a plate over the top. Loose fill under a slab is the reason so much older concrete around here dropped in the first place. Where the subgrade is soft or was disturbed by whatever we removed, we go deeper and place more aggregate. On flat lots we also grade the base to the same fall we want the finished surface to have, so the slab thickness stays consistent across the pour.
Curing, and it is not the same thing as drying. Concrete gains strength through a chemical reaction that needs moisture, and in hot dry weather under full sun the surface can lose water far faster than it should. We cure the slab so it keeps hydrating, which is what gives you a hard, durable surface instead of a chalky one that dusts and scales a few years later. We also ask you to stay off it through the initial set and keep vehicles off longer. Rushing that part is a permanent mistake.
Broom finish is the workhorse, it gives grip, hides wear and costs the least. Exposed aggregate is rougher underfoot but handles heat and traffic well and disguises staining. Stamped concrete buys you a pattern and texture that reads like stone. Integral color is mixed through the concrete rather than dusted on the top, so chips and wear do not reveal a gray core. Under unbroken sun, lighter tones stay far more comfortable to walk on barefoot, which matters around a pool deck more than anywhere else on a property.
Sealing helps most on decorative work. Stamped and colored surfaces hold their appearance longer with a sealer, and it slows staining on anything sitting near planting or a barbecue. It is not permanent, so plan on redoing it periodically. On a plain broom finish driveway it is optional. One caution on pool decks and steps, some sealers turn slick when wet, so we use a product with a grit additive or a non slip formulation in those areas. We would rather the surface stay safe than look shiny.
Considerably more than the visible block. A retaining wall starts with a footing sized for the load, vertical rebar tied into it and running up through the cells, and grout filling those cells solid. Behind the wall we place free draining gravel, a perforated drain pipe at the base carried out to daylight, and weep holes through the face. Water is what pushes walls over, so the drainage is structural rather than optional. Above a set height the City requires an engineered design and a permit, and we handle that as part of the job.
Height and what stands behind it. A low garden or seat wall holds nothing back and can be built lighter. Anything retaining soil, or standing tall enough to matter in wind, needs steel and grout. We set vertical bar at spacing through the cells, add horizontal bar in bond beam courses, and pump grout so the wall becomes one solid unit instead of a stack of hollow block held together by mortar joints. From the outside the two can look identical. Inside, only one of them is actually a wall.
Often yes, provided the block is sound, plumb and properly footed. We clean the face, apply lath and a scratch coat as the material requires, then set the stone in mortar with the joints packed and tooled. Veneer adds weight and thickness, so the footing and any adjacent flatwork have to accept it, and edges around gates and openings need planning before the first stone goes on. Where the existing wall is cracked or moving, veneer only hides the problem for a while. We correct the wall first.
They do, and on modest lots they earn their space by doing two jobs at once. A seat wall edges a patio, holds a small grade change and gives you seating without furniture eating up the floor area. Pilasters break a long wall visually, carry gate hardware, and give you a place to run low voltage lighting or set a mailbox. Both need footings poured below grade with steel tied through, the same as any masonry. Caps in stone or poured concrete finish the top and keep water out of the block.
Our crew. Daniels Landscaping builds under one licensed contractor. The people who tear out your old slab, compact the base, tie the steel, set the forms and finish the pour work for us directly, and they are the same faces you will see from the first day through the last. That means one company is accountable for the result, no schedule gaps waiting on somebody else, and no confusion about who to call if something needs attention afterward.
Phone Daniels Landscaping at (818) 443-9300 and we will arrange a time to walk the property with you. We look at what is failing, check grades and where water needs to go, measure the areas, and talk through finishes, wall heights and whether any part of the work requires a permit. You then receive a free written estimate laying out scope and materials so you can read it at your leisure and compare it honestly. We are licensed in California, number 1138709. There is no charge and no obligation for the visit.