I'm installing copper water lines, and I've noticed that the plumber who worked on other parts of my remodel used polyethylene "tube insulators" (as pictured below) in some instances, but not all.
Is there a general rule of thumb when these should be used? Are they ever required?
For instance, when running copper through a series of studs, would it be advisable to use one on each end? On every stud? Every third? Etc...
I really can't determine any rhyme or reason or pattern to what the plumber before me did.
For reference, here's the IPS version of the insulator I'm looking at:
http://www.ipscorp.com/watertite/pipesupports/pipeinsulators
Is there a general rule of thumb when these should be used? Are they ever required?
For instance, when running copper through a series of studs, would it be advisable to use one on each end? On every stud? Every third? Etc...
I really can't determine any rhyme or reason or pattern to what the plumber before me did.
For reference, here's the IPS version of the insulator I'm looking at:
http://www.ipscorp.com/watertite/pipesupports/pipeinsulators