The invention provides a resin matrix with high loadings of a conductive filler; various additional additives, such as initiators, mold-release agents, shrink control additives, and carbon black; and optionally one or more rheological agents selected from the group comprising group II oxides, alkaline earth oxides, carbodiamides, polyisocynates, polyethylene and polytetraethylene fluoroethylene. The composition can be a two-component polyurethane composition. A boot is fitted over each end of the board and the board is placed at an angle between a wall and a floor of a building that is under construction.