Durability of Finishes Feist and Ross, “Performance and Durability of Finishes on Previously Coated CCA-Treated Wood” 1995, Forest Products Journal
Fully Pigmented > Semitransparent > Unpigmented
Stains need refinishing after two years or less
Paints (Film Formers including Acrylics) Could Hold up for More Than Two Years
Wood Surfaces only Subjected to Weather, not Wear as in Foot Traffic
Results are in General agreement with Consumer Reports June 98 and 99