FAQ
Irrigation in North Hollywood, answered
The questions we hear most from North Hollywood homeowners.
We begin at the water source, checking static pressure and available flow, because those two numbers decide how many heads can run at once. From there we lay out zones by plant type and sun exposure, size the mainline and laterals, set valves in a manifold with a box that can actually be opened later, and trench the lines to depth. Heads are placed for head to head coverage, then adjusted arc by arc. The controller gets programmed with real run times, and we run every zone with you standing there so nothing is a mystery afterward.
That is the most frequent complaint we hear on these smaller lots, and it is almost always fixable without tearing the yard apart. Typically the heads throw farther than the space is wide, so we switch to a shorter radius nozzle, change the arc, or move the head in from the edge. Strips along a driveway or walk do far better with side strip nozzles than with a quarter circle head fighting the geometry. Where a bed sits tight against a fence line, putting that bed on drip instead of spray ends the argument permanently.
Heads are spaced so each one throws water all the way to the next, a principle called head to head coverage. Sprinklers apply far less water at the outer edge of their throw, so gaps between heads become dry patches that no amount of extra run time will fix. On a compact lawn in this neighborhood that usually means more heads with smaller nozzles rather than fewer heads straining to reach. Every head on a given zone also has to apply water at the same rate, otherwise one section floods while another stays thirsty.
Area size decides it. Fixed spray heads suit small and awkwardly shaped lawn areas because they cover a short distance and finish quickly, though they apply water fast enough to cause runoff. Rotors throw a single stream a long way and are meant for open spaces larger than most front yards on these blocks. Rotary nozzles sit between the two, screwing into a standard spray body while applying water slowly through rotating streams, which suits a mid size lawn and cuts down runoff considerably on level ground.
Almost any bed of shrubs, perennials or ground cover waters better on drip than on spray. Emitters deliver water at the root zone slowly, so it soaks in instead of sheeting off, and nothing lands on fences, walls or windows. Foliage stays dry, which keeps mildew down on plants growing in tight spaces with limited air movement. Drip also lets us match output plant by plant, giving a young tree more than a small shrub on the same line. The tradeoff is that the filter and pressure regulator need occasional cleaning.
Yes, and it ranks among the better value upgrades on an older property. In most cases we keep the existing valve and lateral piping, then convert at the valve with a filter and pressure regulator, or convert head by head using retrofit bodies that accept drip tubing. Tubing is routed through the bed and pinned down, with emitters set at plants rather than in a grid. Run times change completely after a conversion, since drip runs long and infrequently, so we reprogram the controller instead of leaving old spray timing in place.
It depends on flow, not on preference. Available water at the meter limits how many heads can operate at once, and that arithmetic sets the minimum number of zones. Beyond that we separate by plant need and exposure, a practice called hydrozoning, so lawn, shrub beds, a shaded side yard and any container planting each get their own valve. Mixing turf with drought tolerant shrubs on a single valve guarantees something suffers, because the schedule that keeps grass alive will drown plants chosen specifically to survive on very little.
Valve placement gets planned around access, not hidden purely for looks. We group valves in a manifold near the point of connection where possible, set the box at grade so a lid lifts without digging, and leave clearance so a hand and a wrench actually fit. In tight side yards we avoid putting a box where gates swing, where trash cans park, or where a neighboring fence footing crowds the trench. Wire runs with slack and gets looped at the box, since the day a solenoid fails is not the day to be short on wire.
Systems installed decades ago often reach a point where repair turns into a subscription. Common findings include brittle pipe that cracks near any repair, valves whose parts are no longer manufactured, mismatched heads collected over years of patching, and a controller with no weather awareness at all. If the mainline and valves are sound, we repair and upgrade the visible parts. When several failures appear in a single season, or when the layout no longer matches the planting, replacement costs less over a few years than paying repeatedly for the same leak.
For most owners, yes. A weather based controller adjusts run times using local conditions instead of repeating a fixed schedule through a cool week or a heat wave, which is where a great deal of water gets wasted. Remote access from a phone matters if you do not live at the property, because a stuck valve or a broken head can be shut off immediately. Local water agencies sometimes offer rebates on qualifying controllers and equipment, and those programs change constantly, so we point you to your provider rather than guess at eligibility.
A rain sensor or an equivalent rain skip feature keeps the system from running during and right after rain, which is both wasteful and embarrassing to watch. California water use rules assign allowed watering days and limit how long sprinklers may run, and those rules tighten and loosen with drought conditions, so we program to whatever your provider currently allows and leave the schedule simple to adjust. Drip is generally treated more favorably than spray under those rules, which is one more reason converting beds pays off beyond the water saved.
High pressure is hard on a system and easy to overlook. When pressure exceeds what a nozzle is designed for, water leaves as fog instead of droplets, drifts off target, and a surprising share never reaches soil at all. It also stresses fittings and shortens the life of valves and heads. The remedy is regulation, either pressure regulating heads on a zone or a regulator at the point of connection, sized to what we measure on site. Drip zones always receive a regulator, since emitters are built for a narrow pressure range.
Any irrigation system connected to potable water needs an approved backflow assembly, because sprinkler lines sit in soil and could pull contaminated water back toward the house if pressure drops. The device type depends on the connection and on the local water purveyor, and it has to be installed at the correct height and orientation to function as intended. We install what code and your water provider require, and we place it where it can be tested and serviced rather than buried behind a shrub where no one can reach it.
Usually the water bill notices before anyone else does. We start by isolating the system at the shutoff and watching the meter to confirm the loss is on the irrigation side rather than inside the house. Then we run each zone and look for the telling signs, meaning a soft spot, a patch staying green in dry weather, gravel washing out, or heads that dribble after shutdown. A valve failing to close fully is a frequent culprit, and so is a lateral crushed by roots or by a fence post driven years ago.
Soil accepts water at a fixed rate, and sprinklers usually apply it faster than that. On level lots the excess does not run downhill and vanish, it puddles or drifts across the walk toward the street, so the waste is visible while the root zone stays dry. Cycle and soak solves it by splitting one long watering into shorter bursts with rest periods between, letting each application absorb before the next arrives. Compacted soil around older homes makes the effect stronger, so aeration and mulch help the schedule do its job.
That is exactly how we build for income property. Straightforward equipment, standard parts stocked at any supply house, valve boxes grouped and labeled, and a controller that can be checked remotely, so a repair does not require a specialist or a scavenger hunt. Staging is easy because zones are independent. We can install the mainline and a valve manifold sized for the whole property, then bring zones online as budget allows without redoing anything. Durable and boring beats clever on a property where tenants change and nobody watches the sprinklers.
One licensed contractor handles it. Daniels Landscaping stays accountable for the work, so the same company that designs the layout digs the trenches, glues the pipe, sets the valves, wires the controller and returns if anything needs adjusting. The crew knows where every line runs because they put it there, which matters enormously the day a repair is needed or a future project has to dig near existing pipe. You deal with us directly, not with a scheduler passing your address along to whoever happened to be available.
Reach Daniels Landscaping at (818) 443-9300 and we will arrange a visit. We check pressure and flow at the meter, walk the existing system if there is one, note where overspray or dry spots are showing up, and write a free estimate covering zones, equipment and controller. California license number 1138709. If the property makes sense to phase, we will map out which zones to tackle first so the money goes where the waste is worst.