Disclosed herein is a back-grooved laminate wood flooring in which a wood
veneer of high pressure resin impregnation laminate (WPL) is laminated on
a base selected from a vinyl chloride (PVC) resin layer, on oriented
strand board (OSB), a high-density fiberboard (HDF) and a waterproof
plywood. More specifically, the back-grooved laminate wood flooring
comprises a WPL (20), an adhesive layer (40) and a base (10) (a polyvinyl
chloride resin layer, OSB, HDF or waterproof plywood) wherein the WPL
(20) includes a base-reinforcing layer (24), a natural veneer layer (23),
a resin-impregnated overlay layer (22) and a surface UV coating layer
(21) layered in this order from the bottom. The back-grooved laminate
wood flooring further exhibits excellent soundproofing performance.