Sure yukkuri the author took conventional lawn sprayers to the edges of his roof on the gutters.
Soaker hose roof cooling.
We live outside of yuma az the feed water is pretty warm to start with.
Cooling with liquid water running off from a sprinkler is not efficient but evaporative cooling from a small amount of water like a periodic sprinkle is very efficient.
Coming from the faucet it goes into a coil of plastic pipe in a tub with misters spraying the coil.
Expandable hose flex garden hose hot water use garden hoses 100 ft or greater garden hoses 3 8 inch rubber tubing flexible outdoor water pipe how doers get more done need help.
Contact your local fire marshal for advice.
They can also be hooked up to a thermostat which causes them to spray when the roof surface is hot enough to warrant evaporative cooling.
He put them to a timer.
Use a soak n spray hose it puts out lots of very small streams down the length of the hose.
The hoses are connected to a sprinkler timer and come on six times during the hottest part of the day.
Yes the soaker hose will help cool your roof and your home because the evaporation will use up some of that excess heat.
The water that then goes up to the roof is cooler than it was coming out of the faucet.
We have soaker hose on our flat roof.
Likewise don t climb up on your roof with a garden hose.
Firesafe marin recommends that you replace any wood shake roof with a fire sesistant type a roof assembly but until that happens your house is the rare case a sprinkler might be helpful.
1 gallon of water consumes 8000 btu as it evaporates.
Our houses are about the same size but his.
I would assume this would work in any climate where your roof got hot enough.