Does any one have any experience with the new PT lumber? NOT the yellow
PT that was introduced 6~8 years ago.

A few months ago I was considering replacing a door and jam assembly to my
out door storage room, the jam is starting to rot near the sill. Lowe's
offers a door jam guaranteed for life to not rot and it has no chemical to
aid in making it rot and insect proof.

Wood magazine has a short article on the new PT lumber that goes through a
double pressure steam treatment that on the second cycle gets cooked at over
400 degrees F. According to the article the second round in the PT process
makes the sugars and sap unsuitable as food for insects or for rot. All
that is used during this PT process is water and steam.