Irrigation and Sprinkler Services in Roy, Utah

Irrigation and sprinkler services fit homeowners in three common situations. The first is a property that needs a new irrigation system — either new construction without an existing system, or an established home where hand-watering or hose-based coverage is no longer practical. The second is an existing system that is underperforming — broken heads, stuck valves, poor coverage, pressure problems, controller issues, or zones that are not responding. The third is seasonal service — the spring startup and fall winterization that protects the system through Northern Utah's freeze cycle and keeps it running properly from the first warm week through the last watering day.

This service sits within the Exterior and Outdoor Services family. Cornerstone's role covers system design, installation, repair, component replacement, drip conversion, controller programming, backflow assembly coordination, and seasonal service. When a project requires licensed plumbing work beyond the irrigation connection point, well or pump engineering, landscape design, or grading and drainage work outside the irrigation scope, we coordinate with qualified specialists or direct you to the appropriate service path. We do not provide landscape architecture, licensed plumbing services, or well and pump system work ourselves.

Irrigation systems on the Wasatch Front operate under conditions that differ meaningfully from national averages, and those conditions shape what the work involves.

System components and how they work together. A residential irrigation system has five core components that must function as a unit: (i) The controller — the timer that tells each zone when to run and for how long. (ii) Valves — each zone has its own valve controlled by a solenoid, opening and closing on the controller's schedule. (iii) Pipes — the mainline carries water from the source to the valve manifold, and lateral lines carry it from each valve to the heads in that zone. (iv) Sprinkler heads — spray heads for smaller areas (operating at 15 to 30 PSI), rotors for larger coverage (25 to 45 PSI), bubblers for tree wells and confined basins, and drip emitters for beds and planters. (v) The backflow preventer — a safety device that stops irrigation water from flowing backward into the drinking water supply. When any one of these components fails, the symptoms often appear elsewhere in the system as pressure loss, dry spots, flooding, or zones that will not activate.

Head and emitter types. The right head type depends on the zone's size, shape, plant material, and water needs. Spray heads deliver a fixed fan pattern and work best in compact, regularly shaped turf areas. Rotors throw water in slow rotating streams and cover larger areas more efficiently with less evaporation. Drip emitters deliver water slowly and directly to root zones, reducing waste in beds, planters, and low-water landscape areas. Bubblers flood individual plant basins at low flow for tree wells and raised planters where saturation needs to stay contained. Most residential systems use a combination — spray zones for small turf sections, rotor zones for main lawn areas, and drip zones for beds and gardens.

Wasatch Front seasonal conditions. The Wasatch Front's climate creates a pronounced seasonal cycle for irrigation systems. Northern Utah's frost line reaches 30 inches in Davis, Weber, and Salt Lake counties, but residential sprinkler lines are typically installed at 8 to 12 inches — well above the frost depth. That gap is why winterization is not optional here. Water left in the lines, valves, and backflow assembly after the last watering day will freeze and expand, cracking pipes, splitting valve bodies, and damaging the backflow preventer. The first frost in Davis and Salt Lake counties typically arrives between October 21 and October 31, making October the critical winterization window. On the other end, spring startup requires slow repressurization and zone-by-zone testing to catch freeze damage before the system runs on its own schedule.

Backflow preventer requirements. Utah plumbing code requires a backflow prevention assembly on any irrigation system connected to the potable water supply. Approved devices include reduced pressure principle assemblies, spill-resistant pressure vacuum breakers, and atmospheric vacuum breakers. The assembly must be tested by a certified backflow technician within 10 days of initial installation and annually thereafter, with test results submitted to the local water authority. If the property uses secondary water as the sole irrigation supply, the backflow requirement may not apply — but that determination depends on the local water district.

What falls inside this scope. System design and zone mapping, new installation (trenching, piping, head placement, valve manifold, controller, backflow assembly), repair and component replacement (heads, nozzles, valves, solenoids, wiring, pipe sections), drip irrigation installation and conversion, controller programming and upgrades, seasonal startup and winterization, coverage adjustment, and pressure diagnosis.

What falls outside this scope. Licensed plumbing work upstream of the irrigation connection point, well and pump system installation or repair, landscape architecture and planting design, grading and drainage work beyond the irrigation trench scope, and annual backflow testing certification (performed by a certified tester, which we can coordinate). These are specialist scopes that require separate qualification.

Irrigation and sprinkler services at Cornerstone are organized into five focused paths, each with its own detailed page.

Drip Irrigation. Targeted water delivery for planting beds, garden areas, tree wells, and landscape zones where slower, more controlled irrigation reduces waste and improves plant health. Drip systems use emitters that deliver water directly to the root zone at low flow rates, minimizing evaporation and overspray. This path covers new drip installation, conversion from spray to drip in bed areas, emitter selection, and tubing layout for the property's specific planting plan.

Irrigation Installation. Full system design and installation for properties that need a new irrigation system from scratch. This path covers zone mapping based on the property's size, shape, sun exposure, soil conditions, and plant material — then trenching, pipe routing, head and emitter placement, valve manifold installation, controller setup, and backflow assembly. Installation scope also includes retrofits where an existing partial system needs to be expanded or redesigned to cover new areas.

Irrigation Winterization. Season-closing service that protects the system before freezing weather arrives. Winterization involves shutting down the water supply, draining the mainline and lateral lines using compressed air (calibrated to 65 PSI maximum to protect valves and heads), insulating or draining the backflow preventer, and securing the controller. On the Wasatch Front, this service is typically performed in October before the first sustained frost.

Sprinkler Repair. Diagnosis and correction of existing system problems — broken or clogged heads, leaking valves, stuck zones, wiring faults, mainline and lateral pipe breaks, pressure irregularities, controller malfunctions, and coverage gaps. Repair scope ranges from replacing a few damaged heads to tracing wire faults, replacing valve assemblies, and re-routing pipe sections that have failed.

Sprinkler Startup. Season-opening service that reactivates the system after winter. Startup involves slowly repressurizing the mainline (opened gradually to prevent water hammer), running each zone manually to verify operation, checking every head for damage and proper spray pattern, adjusting arc and radius for head-to-head coverage, testing pressure at multiple points, identifying freeze damage from the winter, and reprogramming the controller for the current season's watering schedule.

Before an accurate irrigation estimate can take shape, several property-specific factors need to be understood.

Existing system status. If a system already exists, knowing the approximate age, number of zones, controller type and location, head types, and any known problems helps scope whether the work is repair, partial upgrade, or full replacement. If no system exists, the planning starts with the property itself.

Property size and layout. Total irrigable area, lot shape, and how the landscape is divided between turf, beds, hardscape, and structures determine zone count, head selection, and pipe routing. Irregular lots, narrow side yards, and areas separated by driveways or walkways affect how zones are designed and where trenching runs.

Water source and pressure. The system design depends on whether the property uses municipal potable water, secondary water, or a combination. Available pressure and flow rate at the connection point determine how many heads can run simultaneously per zone — and whether pressure regulation or boosting is needed. Low-pressure properties may require fewer heads per zone or different head types to maintain coverage.

Soil conditions. The Wasatch Front's clay-heavy soils absorb water more slowly than sandy or loam soils. This affects sprinkler run times, the recommended cycle-and-soak programming approach (splitting run times into multiple shorter cycles with pauses to reduce runoff), and whether drip zones are more appropriate for certain areas.

Landscape zones and plant material. Turf areas, perennial beds, annual beds, vegetable gardens, trees, and shrubs all have different water needs. Grouping similar water requirements into the same zone is the foundation of efficient irrigation design — mixing high-water turf and low-water shrubs on the same zone guarantees that one is overwatered or the other is underwatered.

Access and obstructions. Trenching equipment needs access to the yard. Existing hardscape (driveways, patios, walkways), fencing, retaining walls, mature trees with established root systems, and utility lines all affect where pipe can be routed and where trenching is practical. Utility marking through Blue Stakes 811 is required before any trenching — Utah law requires notification at least three business days before digging.

Backflow assembly status. If the property has an existing backflow preventer, its type, condition, and testing history affect whether it can remain in service or needs replacement. New installations require a new approved assembly, initial testing within 10 days, and annual testing thereafter.