Pressure Treated Wood
Pressure-treated wood is a safe,
long
lasting building material used
in decks,
fences, retaining walls, docks
and other
places where wood is exposed to
rot,
insect attack or other forms of
bio-deterioration.
In the pressure-treatment
process, lumber
is loaded into a horizontal
cylinder.
The cylinder door is sealed, and
a liquid
preservative solution is pumped
in.
The pressure in the cylinder is
then raised,
forcing the preservative into
the wood.
At the end of the process, the
excess
treatment solution is pumped
back to a
storage tank for reuse. Because
this
treatment renders the wood
useless as a
food substance for fungi,
termites and
other wood-destroying agents,
the wood is
protected and is much less
subject to
deterioration. |