First I'm hearing of the stuff, so I did a quick search and came up
Is that the stuff mentioned in Wood magazine? Looks interesting.
First off I indicated PT lumber, I will correct that to Thermally Modified
The site you indicated looks like the same thing. Apparently this type wood
has been available in Europe since the 90's and is only now beginning to be
seen in the USA.
are the references sited by Wood Magazine.
Claims indicate less likely to warp, is more dimensionally stable, and the
wood becomes harder. Predrilling near the ends of boards is recommended to
prevent splitting and the wood will fade to a silvery gray more quickly than
normal when in sun light. Cost right now appears to be about 2x that of PTP
and about the same as Western red cedar.