PEX tubing

I have to inspect a house in where the Pex tubing is in a uninsulated crawl space on the water in NY. It is for a single zone hot water that was just replaced after SANDY? They plan on making the bungalow there full time residence. Is there a freezing point of pex? Do they make insulation for pex? heat trace ? anti freeze? Any recommendations.
thank you

While pec can handle freezing without bursting and return to its original form, it is advisable to remove all possibilities. Check with the manufacturer as some foam insulation a can cause a reaction over time and degrade its integrity.
Check out this thread as it might be helpful

I insulate when I install on new construction and the insulation is purchased with the PEX at my local supplier.

If the system has a re-circulator then there is no need to insulate.

Found this on another thread in plumbing(nachi)

A lot of info but very helpful in education you on PEX

thank you