I set a 4x4 pressure treated post in a 3 foot deep hole with about 3
inches of leftover driveway gravel in the bottom and concrete all around
and up the post.
Are termites likely to find their way up
through that gravel and get to the post?
Do termites usually forage as deep as 3 feet in the ground?
Yes, but pressure treated, there should be no problem. Termites will
also build tunnels to wood above ground so you do not even have to be
in direct contact with soil to get infested. I have pressure treated
wood in bare ground for many years without termite attack while they
were in untreated wood and neighbors house. Neighbors treatment
killed the colony.
PT isn't magic potion - it delays, but does not prevent trmite damage.
Termite colonies can span hundreds of feet, so finding you wood post is
likely a matter of chance. Termites don't go through painted wood if
the coat of paint is intact; coating the post might ensure longer life.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.