An insulated construction member has a first wooden rail and a second wooden rail. The second wooden rail is positioned in parallel spaced relation to the first wooden rail. This parallel spaced relation creates a thermal break between the first wooden rail and the second wooden rail. A series of planar wooden connectors are positioned at spaced intervals along the length of the first wooden rail and the length of the second wooden rail. Each of the planar wooden connectors extends across the thermal break between the first wooden rail and the second wooden rail. A polymer insulation is positioned between the first wooden rail and the second wooden rail completely filling the thermal break. The polymer insulation encapsulates the series of planar wooden connectors, with the polymer insulation being reinforced by the series of planar wooden connectors.