A reinforced wallboard that has improved core strength and is designed to facilitate the secure attachment of cabinets and/or other heavy objects to the surface thereof. Generally the reinforced wallboard includes a structural substrate having an upper surface and a lower surface, a first binding layer bonded to the upper surface, and a first paper layer bonded to the binding layer. The structural substrate layer may be formed of plywood wood, or other suitable materials, such as melamine. The wallboard may have one or more tapered edges so that the tapered edges and paper layer give the appearance of ordinary gypsum plaster wallboard and allow for its installation with standard wallboard fasteners, spackling, tools, and techniques.