Steve Cox wrote:
"3. Pine seems to be more resistant to weather damage than oak."
Seemed odd, but I would guess it absorbs the coatings better than hardwood. Also I didn't know POR15 was used on wood
I question this finding on the oak. If you eliminate the two worst finish performers, #8 and #10 (both Oak based), you will see that Oak didn't do so bad. However, I think the deciding factor in these tests may be the number of coats of primer (again, excluding Glisten & Linseed oil) used. I may be wrong; but, here's what I extracted from Mar-K's findings:
Item#...Wood...#Primer coats/#Finish coats...Surmised Rating
#1...Oak...1/3...Needed more Primer?
#2...Pine...1/3...Needed more Primer?
#3...Oak...2/3...Jury's Out
#4...Oak...1/3...Did Okay
#5...Oak...2/3...Did Okay
#6...Oak...3/3...Most Durable Clear Finish
#7...Oak...3/3...Best Overall Finish
#9...Pine...3/3...Best Clear Finish
Again, please look at the amount of primer used. Unless I goofed, it looks like Oak didn't do so bad.