Maintaining a healthy, vibrant lawn requires more than just regular watering. It requires an irrigation system that operates at peak efficiency. When your pop-up sprinkler heads sit at the wrong height, your lawn suffers the consequences.
If a sprinkler head sinks too low, surrounding grass blocks the water spray, leaving dry patches across your yard. If it sits too high, it becomes a prime target for a passing lawnmower blade, resulting in shattered plastic and a massive water leak. Adjusting your sprinkler head height ensures even water distribution and protects your irrigation equipment from costly damage.
This guide walks you through everything you need to know to adjust your pop-up sprinkler heads. We will also look closely at how the unique soil conditions in Rowlett impact your irrigation system over time.
If you live in Rowlett, you already know that our local dirt behaves differently than soil in other parts of the country. Rowlett sits on the Texas Blackland Prairie, which means our yards consist almost entirely of heavy clay soil.
This clay soil has an incredibly high shrink-swell capacity. During our hot, dry Texas summers, the clay loses moisture and shrinks, creating deep cracks in your lawn. When the heavy spring and fall rains arrive, the clay absorbs that water and swells dramatically.
This constant expanding and contracting literally moves the earth around your home. As the soil shifts, it takes your underground irrigation pipes and sprinkler heads along for the ride. A sprinkler head perfectly leveled in May might sink two inches below the grass line by August. Alternatively, the swelling soil can push the heads upward, leaving them dangerously exposed. Because of these unique local conditions, adjusting sprinkler head height is a routine maintenance task every Rowlett homeowner must master.
You do not need to dig up your yard to know you have a problem. Your lawn and your irrigation system will give you clear visual cues when a sprinkler head sits at the wrong height. Watch for these common indicators:
Adjusting a sprinkler head is a simple weekend project that requires only a few basic items. Gather the following tools before you begin:
Follow these steps to safely and effectively adjust the height of your pop-up sprinkler heads.
Always verify that your irrigation system is completely turned off before you start digging. You want to avoid an unexpected geyser while your face is hovering over an open water line. Disconnect the controller or set it to the off position so an automatic schedule does not trigger the zone.
Use your shovel or trowel to carefully dig a small perimeter around the sprinkler head. Cut a neat circle into the grass so you can easily replace the turf later. Dig down until you expose the entire head and the plastic riser connecting it to the main underground water pipe. Remove the dirt carefully to prevent dropping debris into the exposed plumbing lines.
Grip the body of the sprinkler head firmly and unscrew it counterclockwise from the riser. Heavy clay soil sometimes locks the plastic threads tightly in place. If you cannot turn the head by hand, use your pliers to gain leverage. Apply gentle, steady pressure so you do not snap the plastic riser below ground.
Now you need to correct the distance between the underground pipe and the surface of your lawn. Look at the existing riser.
Aim to position the top of the un-popped sprinkler head perfectly flush with the underlying soil line, just below the grass blades.
Wrap a small piece of Teflon tape around the top threads of your new riser. This tape creates a watertight seal and prevents leaks from forming below ground. Screw the pop-up sprinkler head back onto the new riser. Tighten it securely by hand, ensuring the nozzle faces the correct direction toward your lawn.
Before you bury the sprinkler head again, run a quick test. Turn on the irrigation zone for a minute or two. Watch the sprinkler head pop up. Check the base of the unit for any bubbling water, which indicates a loose connection. Verify that the spray pattern evenly covers the intended area without the grass blocking the stream.
Once you confirm the height is correct and the connection is tight, carefully return the dirt to the hole. Pack the heavy Rowlett clay firmly around the base and sides of the sprinkler head. Solidly packed soil prevents the unit from tilting sideways when the ground gets wet. Finally, place your cutout piece of grass back on top and press it down.
Dealing with unpredictable Texas soil requires a few extra strategies. Keep these professional tips in mind to maximize the lifespan of your irrigation system:
Upgrade to Swing Joints
If you find yourself constantly adjusting the same sprinkler heads due to soil shifts, consider replacing standard rigid risers with swing joints. A swing joint uses a flexible, multi-hinged connection between the water pipe and the sprinkler head. When the heavy clay swells and pushes upward, the flexible joint bends instead of snapping. This dramatically reduces underground pipe damage.
Check Heights After Major Weather Events
Get into the habit of inspecting your lawn after significant weather shifts. A long summer drought followed by heavy fall storms will almost certainly move your soil. Walk your property and visually inspect the heads before you run your lawnmower.
Aerate Your Lawn Carefully
Core aeration helps Rowlett clay soil breathe and absorb water better. However, aeration machines easily destroy exposed sprinkler heads. Always flag your sprinkler heads with small markers before running an aerator across your yard.
Mind the Thatch Layer
Sometimes a sprinkler head seems too low, but the soil has not actually shifted. Instead, a thick layer of thatch and dead grass has built up over the head. Rake the area around the sprinkler thoroughly before you decide to dig up the unit and replace the riser.
Properly adjusted sprinkler heads save water, improve your lawn’s health, and keep you from buying replacement parts every time you mow. Take a walk around your property this weekend to identify any sprinkler heads sitting too high or too low. With a simple trowel and a few cheap replacement risers, you can easily handle this project yourself. If you encounter deeply buried pipes, heavy root systems, or broken underground water lines, do not hesitate to reach out to a local Rowlett irrigation professional for assistance.
