a fiber reinforced composite wood board is designed particularly for use in the flooring of truck trailers which experience adverse operating conditions such as from heavy loads of lift trucks on the top side and water spray during rainy periods on the bottom side . the composite wood board comprises an edge - glued laminated wood member composed of wood segments with end joints . the wood member is underlaid with a thin layer of fiber reinforced plastic . the top surface of the composite wood board is the same as that of the laminated wood . the fiber reinforced plastic underlay is composed of glass and / or carbon fibers embedded in a polymeric resin such as epoxy , phenolic , vinyl ester , polyester , polypropylene or polyamide resin . further , the fiber reinforced plastic underlay is substantially bonded to the wood member with a reactive hotmelt adhesive . the fiber reinforced plastic provides high fatigue resistance to the composite wood board and prevents water leakage into the trailer through the end joints of the wood segments .