3.5" x 3.5"
Treated lumber should be used in outdoor construction. There are different types of treated lumber, some are for above ground use and some are for below grade use.
treated pine
You might be referring to 'pressure treated' lumber, or lumber that has been milled but not dry.
Older pressure treated lumber known as CCA was treated with 3 substances, Chrome, Copper, and Arsenic. Newer treated lumber intended for consumer contact is now treated with different chemicals, such as copper/boron. Lumber NOT intended for consumer contact, such as buried or submerged lumber may still be CCA treated. PS- it is not a good idea to burn ANY treated lumber. If it kills bugs and fungi, it is likely not real good for you, either.
thesame
NO, not on treated lumber. Almost anything will come off within a year.
Treated, because it will resist insects.
yes it can
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See this link.
It doesn't need to be treated. It is resistant to fungus without treatment.
49 pounds