Patent ID: 8407964

Claim:
A method of constructing a building, comprising the following steps: a. constructing a floor by i. attaching plywood sheets over floor joists; ii. installing plumbing pipes and electrical conduits between the floor joists; iii. injecting or spraying insulation foam or installing rigid insulation between the joists on a floor underside, iv. applying a water proof membrane over the floor underside; v. installing reinforcing bars on the floor underside over the water proof membrane therein completing a floor; b. after step a, installing walls on the floor; c. after step b, installing roof framework on the walls over the floor; d. after step c, installing wallboard on the walls and roof framework forming at least one enclosed room with a ceiling; e. after step d, mounting at least a portion of the following directly onto the frame, floors and wallboard: cabinets, countertops, flooring and floor covering, doors, trims and caseworks, electrical boxes, and bath fans; f. after step e, run and connect electrical wires, plumb fixtures, and install heating equipment; g. after step f, performing a functionality check of installed and connected items; h. after step g, spraying insulating foam to the walls and ceilings with pipes and wires embedded in the foam to avoid contact between them and concrete to be poured afterward; i. after step h, applying a waterproofing membrane outside of foam on the walls and ceiling; j. after step i, installing reinforcing bars around the walls, plumbing pipes and heating conduits forming a prefabrication unit; k. after step j, the step of installing a foundation and external walls.