... Tongue and Groove Vertical in engineered bamboo is flat pressed, wear layer is 4mm thickness of horizontal bamboo, core is Chinese ... combination of bamboo with wood. Engineered bamboo flooring has 4mm wear layer of bamboo and rest is with wood. Engineered bamboo flooring ... over concrete, radiant heat, condominiums, plywood, and more. The wear layer is made of bamboo with 4mm thickness enough to be ...