nealtw
Contractor retired
We use untreated lumber for fascia and trim here but it come primed on six sides. When it does fail it is at the saw cuts so priming everything before using it would be a good idea.
Rumor has it primed with oil base but I don't know that for fact.
https://www.standardbuildingsupplies.ca/products/lumber/primed-fascia/
I would still protect the top of the joists.
Rumor has it primed with oil base but I don't know that for fact.
https://www.standardbuildingsupplies.ca/products/lumber/primed-fascia/
I would still protect the top of the joists.