Jerry good points but not compelling.

Better to have a good fire pump and hose to reach tree tops, sprinklers may wet down the roof, but what about sides of the house, vegetation, tree tops and under brush, you want a good buffer. With a combination of sprinklers and hose you have your bases covered. The nozzle can be adjusted to mist spray to jet. You can control the flow and achieve low flow and high pressure without using a lot of water.

In the scheme of things what would
$10, 20, 30K be in comparison to a multimillion dollar home, the value of the contents, and emotional value. Seems like a small sum for piece of mind.

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