| 摘要 |
A modular building panel and a method for constructing the same provides a framework composed of structural members, typically formed of metal, and a backer board typically formed of a cementacious composite for receiving an exterior wall coating surface. The backer board and the framework are separated from, and insulated from, each other by a layer of foam that is applied in liquid form and that expands and cures into a solid form. Substantially no fasteners extend between the backe r board and the metal framework to reduce conduction of heat therebetween. The foam serv es as an adhesive to hold the backer board rigidly in place at a predetermined spacin g from the framework and to anchor the backer board to the structural members. The structural members can comprise U-shaped and C-shaped channel beams for further rigidit y and enhanced anchoring. Upon assembly, the backer board and the framework are overlaid upon each other, typically using spacers of a predetermined spacing thicknes s. Spacers can be formed from pieces of foam having adhesive or double-sided tape to maintain them in alignment with the framework and backer board. Liquid foam is applie d from the interior side of the framework and expands toward the interior side of t he framework.
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