We never saw a leak, but over some years the entire corner of the house had rotted beneath the shingles.

During renovation, we’d created a drain beneath new patio stone, and installed a hand-held shower for rinsing beach sand off kids and dogs. We shut the water off before frost each year, and all seemed well until my son gave the dog a pre-season, early spring bath. When he went to shut the water back off, he discovered a cascade in the crawl space under the shower.