Fall in Powhatan is easy to enjoy. The leaves turn, the grass slows down, and the sprinkler system starts to feel like something you can forget about until spring. But if there’s still water sitting in those lines when the first hard freeze rolls in, you could be looking at a pricey repair bill come April.
Here’s why blowing out your sprinkler lines before the cold sets in is one of the smartest things you can do for your yard this time of year.
Water expands when it freezes
When water turns to ice, it expands by roughly 9 percent. That doesn’t sound like much, but inside a closed pipe there’s nowhere for it to go. The pressure builds until something gives, and that something is usually a pipe, a fitting, a valve, or a sprinkler head.
The tricky part is you often won’t know it happened. A cracked line underground can sit quietly all winter. Then you turn the system on in spring and find soggy spots, low pressure, or a geyser in the middle of the lawn.
The expensive parts are the most exposed
Your backflow preventer usually sits above ground, right out in the cold. It’s also one of the priciest pieces of the whole system to replace. Valves, manifolds, and shallow lines near the surface are vulnerable too. A single freeze can mean digging up turf, replacing parts, and paying for labor on top of it all.
Why a blowout beats just shutting it off
Turning off the water supply is a good first step, but it doesn’t empty the lines. Water stays trapped in the low points of the system. A proper blowout uses compressed air to push that water out of every zone, one at a time, so there’s nothing left inside to freeze.
It’s worth having done right. Too much air pressure can damage the system just as easily as ice can, and every setup is a little different.
Timing matters
Here in Central Virginia, the first freeze often shows up in late October or early November, and it doesn’t always give much warning. Getting your system winterized before then means you’re covered no matter what the forecast does. Waiting until after a cold snap is a gamble.
A little prevention now saves a lot later
Winterizing your irrigation takes a fraction of the time and cost of fixing frozen pipes. It protects your investment, keeps your system ready for spring, and gives you one less thing to worry about when the temperature drops.
Questions about getting your lawn ready for winter? Give us a call at 804.598.2723 or visit aerationsplusinc.com.
