The rain in Spain stays mainly on the plain.
A classic lyric from a classic musical.
It's just not true. Gravity applies everywhere, including Spain.
Unless you live on the moon, gravity always forces water to seek the lowest possible point, which is your home's foundation, basement, or crawl space.
Rain, Rain, Go Away!
Did you know that when 1" of rain falls on a 2,000 square foot roof...