After Hurricane Irma flooded the garage with four feet of ocean water, a washer and dryer had to be replaced.
(Plus ~$6000-worth of power tools).
While waiting for the new dryer, I noticed a copper hot water pipe that had been without the "proper" store-bought insulation installed everywhere else. The pipe was standing only ¼" (5mm) off a "cold" concrete wall, allowing it to radiate expensive heat to concrete
and air.
It should be noted that residential copper pipe used on Florida's coasts will corrode-through—
from the outside! 
As the pipes were hidden from view, I collected my various scraps of Pool Noodles, and devised
Insulators-of-Many-Colors 
:
The technique was to put a PVC pipe in a hollow Pool Noodle, and slice off the length(s) needed. Cut to the correct length, the Pool Noodles snapped right on.
Note: The thread-starter post was moved from the
Boating forum, even though it had met the criterion of, "...If it Floats...".
New, a
Pool Noodle forum?
