Date: Sat, 15 May 1999
i am looking for an alternative to using pressure treated (CCA) posts to use with my fence. can you recommend anything. i have heard that there is borate-treated lumber available, but i have no idea who might carry it. please help!
Borate treated lumber might be helpful, but has the disadvantage that
borates are water soluble and will leach out of the wood. This is not a
big problem for exterior lumber used above the ground, but would not be
good for fenceposts which will be wet much of the time. Pre-treated
borate lumber would be hard to find.
I can only suggest that you use our CPES (Clear Penetrating Epoxy
Sealer) on the post bottoms before they go into the ground. What you
would do is turn the post upside down, apply the CPES generously to the
end grain on the bottom and to the sides, allow it to cure (4-5 days)
and then apply a second coating. This will coat the wood in epoxy and
make it highly rot resistant. Cured epoxy is non-toxic and will not affect the
surrounding environment. However, when CPES is mixed there are
hydrocarbons that are part of the carrier mix which are strong-smelling
and dissipate into the air. Not dangerous if used in the open air or in
a garage with a fan for cross ventilation. The fumes go away in a few
If you are interested, tell us how many posts you have, their size, and
how far into the ground they are going to go and we can give you an
estimate of how much CPES you would require.