John:

Related to your question quoted below:

I belive that what Joel was refering to was Polytrol (European Name),
or Penetrol (US name). Researching on the web indicates that they
are the same thing. See the Photos section for pictures of deck
treated with Polytrol. Search the message base under Deck Stripes
for more information about using this product.
Regards,

Gary Silver, SM 2000 Hull # 335