F7 and W.A.T (Wet After Treatment)
Treated F7 Structural
F7 graded treated timber is a treated timber that is suitable for structural applications such as pergolas and decking support timber.
It is graded to ensure that it meets the structural requirement of AS2858.
It is treated to meet the H3 or H4 hazard classifications as a requirement of AS1604.
W.A.T. (Wet After Treatment)
Treated wet timber is produced to H3 or H4 hazard classifications to Meet AS1604.
It is not kiln dried after treatment or given a structural grading.