PEX and heat tape

I just built a new house and have some (small amount) of Wirsbo in an unheated crawl space. I installed the rest of the plumbing on interior walls and in heated ceilings. Is there a heat tape product that is safe to install on Wirsbo or other PEX products? I'd like to put heat tape on and insulate the lines in the crawl space. Thanks

pex doesn't transfer heat as easily as copper does, but it doesn't hurt to insulate those lines...what you want is standard foam pipe wrap...you can get it at any hardware store.

Frostex is fine. Make sure to insulate also and FOLLOW the directions.

Thanks. I can get the Frostex locally here. Appreciate the help......