I recently gave my electric pressure washer a vigorous workout. …Years ago, I walked into a lumber company to purchase materials and saw a placard on the counter advertising new maintenance-free pressure-treated lumber. Yes, at one time, residential pressure-treated lumber was a new thing. …We all discovered the claim was wrong. Pressure-treated lumber requires extensive maintenance. …This reality led to the first generation of composite decking. I remember when Trex was introduced. It dominated the marketplace, even though it was quite unattractive. It, too, was marketed as maintenance-free. Millions of other homeowners demanded a more realistic composite deck material. Generations two and three of composite decking followed. …The corporate attorneys for some decking manufacturers have reined in the optimistic marketing managers. You’ll now see clever descriptions such as “minimal maintenance.”