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The main shut off valve for your irrigation system needs to be protected against freezing. Make sure it is wrapped with insulation (foam insulation tape and a plastic bag) to protect it from harsh winter temperatures and prevent it from freezing.
How cold does it have to be for sprinklers to freeze?
While you may be eager to get your lawn back to its pristine green state, it is important to remember that temperatures of 32 degrees Fahrenheit or lower put your sprinkler system at risk of freezing.
Should I run my sprinklers during a freeze?
It is best to turn on your system during the warmest time of the day when anticipating freezing conditions. Be sure the outside temperature is 37 degrees or above when you run your system. You ABSOLUTELY do not want to run your sprinkler system during a hard freeze as this will cause damage to your irrigation system.
Should I turn off my sprinklers when frozen?
You should shut off your irrigation system just before temperatures in your region begin to dip below freezing at night. Don’t shut off your irrigation system too early. Often homeowners shut their systems down as soon as the fall season arrives because they believe that their lawn requires less water.
Should I water my lawn before a freeze?
You’ll need to water early in the day to avoid creating a sopping wet mess right before temperatures start dropping. When watering, try to do it without getting any of the actual foliage wet. Wet leaves will form frost that kills faster than just the cold air alone.
What temperature is too cold to water grass?
When the temperature is below 40℉ (4℃), it is too cold to water grass. Grasses enter dormancy as temperatures dip closer to freezing, requiring much less water.
How long does it take for irrigation pipes to freeze?
With a reasonable amount of insulation, even pipes in an unheated area could take up to 6-hours to freeze. This means that the air temperature has to remain at 20° for about 6-hours before there’s a risk of your pipes freezing.
What happens if sprinkler system freezes?
If you forget to winterize your sprinklers, you run the risk that water will freeze in the irrigation valves, pipes and sprinkler heads. When water freezes, it expands causing the parts of your system to burst and destroying your sprinkler system.
How do I unfreeze my sprinkler system?
Once a pipe has frozen, it can be thawed using a few approaches. The Red Cross recommends keeping the faucet open and applying heat with an electric heating pad wrapped around the pipe, an electric hairdryer or portable space heater or by wrapping pipes with towels soaked in hot water.
How do I prepare my sprinkler system for winter?
Steps for Winterizing Your Sprinkler System Step 1: Shut Off the Water. It will come as no surprise that the first step is turning off the water to the system with a main valve that’s usually found near your water meter. Step 2: Turn Off the Timer. Step 3: Drain the Water. Step 4: Insulate Above-Ground Components.
Should I water grass after a freeze?
After a frost, keep perennial turfgrass hydrated. Most grass needs 1 inch of water weekly, including rainfall. Continue watering the grass as it enters dormancy when temperatures cool, but never allow water to puddle, which cuts off the roots’ access to air and light.
How do I stop frost killing my lawn?
Keep Watering Your Lawn It may sound surprising, but one of the most practical ways to prevent light frost damage on your lawn is keeping it hydrated. Deep watering your lawn the evening before a frost allows the moisture to evaporate slowly overnight.
How do I treat my lawn after freezing?
Treating Lawns with Cold Damage Resodding is simple, just remove the grass that’s dead and replace it with new sod, being sure to water it well until it’s established. Reseeding is a little more tricky, but can be helped along by a good dethatching and aerating of the existing lawn.
When should I blowout my sprinklers?
A good rule of thumb is to have your sprinkler system winterized in early fall, but we recommend keeping an eye on the weather, and ensure that your watering system is drained and blown out at least one week prior to the seasons first freeze.
Will a water hose freeze at 32 degrees?
Water in hoses can freeze once temperatures drop to 32℉ (0℃). Exterior hoses freeze much more easily than in-wall water pipes. A hose can freeze when exposed to 6 hours or more of freezing weather.
Can pipes freeze in one night?
Pipes can freeze in as little as six to eight hours, meaning they can freeze overnight. If the outside temperature is below 32 degrees F and your pipes are unprotected, your chances for a frozen pipe increase.
At what temperature should you drain your sprinkler system?
So a good rule of thumb is when you see 32 degrees for the first time in the forecast, drain your sprinkler system as soon as possible.
How do I turn my sprinkler back on after freezing?
Steps to turn on sprinkler system after wintering Find system’s main shut-off valve. Find the vacuum breaker. Close the vacuum breaker test valves. Open the vacuum breaker’s shut-off valves. Reinstall main valve bleeder cap (as needed). Slowly open the main valve. Test the system. Recheck the vacuum breaker and valves.
How do I winterize my sprinkler system without a blowout?
Not all systems need to have the water blown out of them. You can winterize a sprinkler system without an air compressor if all of your irrigation lines are buried at a slight downhill slope. Simply shut off the main water supply to your system and open the drain valves at the end of each zone.
