Ive observed Duration now for about 6-7 years which is about how long ago it came out. Its done great with NO problems. Yes redwood, cedar, and water stains still need a straight prime. I also would probably prime completely new and bare wood but dont have that type of job too often. I like Duration for the older houses that we scrape and have some paint and some bare wood, does great.I'm not questioning if Duration works or not......I'm old school and prime bare wood, but can you tell me how many years you have observed Duration applied over raw or bare wood?
Would you paint new wood siding (say T-111) with it without priming?