Subject: CPES Maximum temperature/oil in wood
Date: Sun, 11 Aug 2002
My name is Jon from Tempe Arizona. I am restoring a 1966, plywood
constructed, 24 foot Campbell. I have chosen CPES to repair the rot,
and stabilize the rest of the wood. I have two questions regarding
First, it was 112 degrees here today, and the humidity is very low.
What is the highest recommended temperature for CPES application, and
what would be the pot life?
Your pot life would be about 30 to 45 minutes before the product started
to skin over. Not really a problem if you get the CPES down right away,
since once applied to the surface all the penetrating happens within
about 5-10 minutes. You would just not mix a lot at one time. It would
also help if you could do this in the morning, when temperatures are
perhaps a little lower.
Second, the inside of the hull has large areas where oil has soaked into
the bottom, both the plywood, and stringer. Enough that midday in the
sun it will begin to leach back out in droplets on the wood surface.
I am working on removing as much as I can. What effect if any will this
have on the performance of the CPES?
Brush-scrub the wood thoroughly at mid day with TSP (trisodium
phosphate) and warm water. You might do this a couple of times. Allow
the wood to dry, and then apply the CPES. To answer your question
directly, wood that is SOAKED in oil will not receive CPES readily, but
if a lot of the oil has been cleaned away and the wood allowed to dry,
then it will accept the CPES.
Thanks for the help. Look forward to working with you, and your
Good questions! Feel free to come on back if you have more.