i have just purchased a new home with two decks attached. both decks are
built with pressure treated fir. i'd like to enlarge both and want to use
material to match.

i've used pressure treated fir before, but only in 4 x 4 posts (you know the
kind with the little indents where they injected the treatment), i've never
used pt 2x4's or 2x6's before, so i went to check them out...i notice there
are no little indentations on these sizes...what gives? they seem darker
than white wood, but how good will they actually hold up outdoors?

i'd like to have used cedar, but that would mean starting over from
scratch...and be very expensive.

any help is appreciated.

jk