OPJ
Established Member
JFC":cftaqjok said:Pressure treated timber isn't used because its not joinery grade timber . If you plane a peice up you will see what i mean .
Sorry, I wasn't clear on what I meant.
I didn't mean to refer to the 'fencing-grade' pressure-treated timber you can buy off the shelf. I actually meant to suggest cutting the cills, jambs, etc. out joinery timber and having that pressure-treated after all the machining is done.