Happens out here, too-I live in a rural area-we wrap pipes with foam, etc every Winter to prevent freezing if power goes out to wells-most years it works-this time it didn’t because the power was off to the water co’s wellhead pump station for hours-the pump wasn’t on and it froze-so customers’ pipes froze, too-my neighbors and I are hoping the pipes thaw out slowly and naturally and there isn’t too much damage to our waterlines...
I’m hoping that too! Good luck to you and your neighbors.
We've even used it in the basement just to conserve heat as the hot water makes it up to the 2nd floor bathroom. It works amazingly well.
It would help with protecting water pipes from freezing especially if you stuffed additional insulation around it in the walls, too.
Rock wool is better than fiberglass. It's more expensive but has much better insulating properties and you don't have to worry about breathing in glass fibers.