Date: Wed, 07 Aug 2002
Dear Dr. Rot. Thanks for your prompt reply to my question regarding our
old columns. The columns are 17 ft. long, approximately 16 inches at
the base which is wooden and rotting. Unfortunately the sprinkler watered
this column frequently for several years before we recognized a problem.
The columns are hollow but discs were inserted into both ends of the
columns when they were rebuilt. I understand that this may shorten the
column life by sealing it and preventing escape of moisture. We are
at a loss as to how to proceed with column rejuvenation; local builders
have no experience with columns and are unable to help. Sincerely, Calvin
Okay, that's what I needed to know.
First, remove all paint from the affected areas and directly adjacent.
Next, saturate the dry wood with our CPES (Clear Penetrating Epoxy
Sealer). The CPES will be easily absorbed through the wood, going
wherever it can find voids, cracks or crevices. IF there are holes all
the way through the column, we suggest getting a garden sprayer and
spraying the inside of the column with CPES. This hole can later be
closed using our Fill-It Epoxy Filler.
We suggest that you make the CPES application two times, allowing a
couple of days (or longer) between applications. Within a week the wood
should be fairly hard, and it will certainly be free from all active
fungi and bacteria. If for any reason the wood is not as hard as you
would like it to be, then we suggest going back and apply a layer of
our Layup & Laminating Resin. After the CPES (and L&L resin if required),
you can fill all holes, cracks and gaps with our Fill-It Epoxy Filler.
In 24 hours the filled areas can be sanded smooth and the columns repainted.
The end result of this type of restoration is a rot-free structural
repair. It is permanent and that wood will not rot in the future.
It's hard to know how much of the products you would require. Certainly
the wood should be allowed to absorb all the CPES that it will, and that
is unpredictable. My best guess would be around a quart per column for
two applications. For the filling it's strictly a volume issue...enough
to fill the vacant areas.
The above is the procedure that many have used to restore hollow
columns. You may want to consider drilling access holes to the upper
interior of all the columns and wand-spraying the inside with the CPES.
CPES does give wood very good protection against future deterioration.
Come on back if you have additional questions, and we'll do our best to
give you honest answers.