Head on over to Kiplinger's site and take the quiz on How Long Should It Last?
We helped Kiplingers out on decks and stains. We should add that three years is average and some decks with high UV or rain exposure may need more frequent maintenance.
Looks like I gave away the answer to this question, but lets see how you do on the rest of the quiz.
Bill Leys-The Deck Expert
NEW PAPERLESS FAX # 805-856-1528 (by Hello Fax)
805-545-8300 Central California
424-235-3196 S California
831-244-0874 N California