US lumber prices, which shed more than 20% in August, have continued to fall to start September, hitting their lowest price this year thanks to a glut of wood that was piled up ahead of a big increase in duties on Canadian imports. “There has clearly been a speculative inventory accumulation at every level from mills to single location lumber dealers,” said Matt Layman, a market analyst and consultant who publishes Layman’s Lumber Guide “For the first time in my 40-plus year career there is indeed a wall of wood that must be liquidated.” As with ...