I figured that was some sort of technical term with a definition above my pay grade so I let it be.
But when we came down at the end of the month and saw this flag on the original house's new roof, I was curious about the term and asked what was needed to wet a roof and why.
He responded "well usually, a case of beer or some rum."
Yep. When a crew finishes pitching a roof, they raise the flag, grab some booze and christen the roof with a splash for the house and the rest for the crew.
I LOVE THIS TRADITION!!
We missed that glorious moment but decided to "wet the shingles" after the front side was completed just for the fun of it and Owen did the honours:
Terrific tradition that I wish we could employ for every "first!"