I put a new deck on my house 3-4 years ago. I used brown pressure treated lumber. I am told that it was 'Southern Pine' and now the wood is getting a green mossy look to it and I try to clean it off but is very hard. It is especially noticeable where the rain drips from one level to the other. I live in Saint John, New Brunswick and was wondering if you have any suggestions on what to do to avoid this or to clean it off.
Answer:
What you're looking for is a bio-degradable cleaning solution for wood and you'll find it at a good paint store.
