benick wrote:

Last November I had the roof stripped and shingled and the chimney
re-built above the roofline and the guy that did it said I should get up
there and waterproof the chimney in the spring when it's warmer. Well
it's spring and I want to do it but I was wondering what I should use? I
have used Thompson's in the past(mixed results) but was wondering if
that is the best stuff to use. What do the Pro's use? Thanks for any
help.....
Thompsons is paraffin in an organic solvent. I used it on a
deck...once about 20 years ago. A mistake I won't make again. There
are several good masonry sealers available that are made from heavy
silanes. They are a much more appropriate choice.