Moving plumbing pipes from a slab to an attic use pex pipe.
Pex pipe in attic.
The flexible tubing is embedded in a.
Yes rodents will chew absoultely eveything they step on.
Sometimes they have been insulated makes very little difference to the temp on a july or august afternoon.
You have a pipe running through the attic the attic gets hot.
Pex cpvc poly back in the day even copper in the attics etc.
Yes the cold water is hot in the summer very hot in fact due to the heat of the attic.
It is important to insulate pex pipe in an attic particularly in cold weather areas.
Foam is used most commonly and generally works well.
Placing water pipes in outside walls greatly increases the risk of frozen and burst pipes in cold.
When running pipe from a slab to an attic use cross linked polyethylene tubing or pex instead of copper.
While pex does not ordinarily burst in the cold the water in the pipes can still freeze.
Because pex piping is flexible it is often used in angles loops or other non linear shapes which makes it imperative to have equally flexible insulation material.
The fact that it is pex has little to do with it although it is possible that it provides a bit higher thermal resistance than say copper.
The water inside is going to get hot.
If you insulate the pipe the water will warm more slowly.