Prefabricated building panel

A prefabricated building panel comprising:

• a core of a plurality of layers of foam plastic material, said core having two opposed and substantially vertical core edges, and two opposed and substantially horizontal core edges defining thereby the size of said panel, said core comprising;
• a first layer being thermoset foam plastic and having two opposed surfaces, one of said two opposed first layer surfaces securely bonded to a first surface of a second foam plastic layer;
• a third layer of thermoset foam plastic material having two opposed surfaces, one of said two opposed first layer surfaces securely bonded to a first surface of a second foam plastic layer;
• a third layer of thermoset foam plastic material having two opposed surfaces one third layer surface securely bonded to a second surface of said second foam plastic layer,
• means for said bonding of said first layer surface to said first surface of said second foam plastic layer and said bonding of one third layer surface to said second surface of said second foam plastic layer is said thermoset foam plastic first and third layer;
• an inner skin having an average predetermined thickness, a preselected surface configuration and sized substantially the same as and securely affixed by bonding provided by said thermoset foam third layer to another of said third layer surface;
• an outer skin having an average predetermined thickness, a preselected surface configuration and sized substantially the same as and securely affixed by bonding provided by said thermoset foam first layer to another of said first layer surface.

An improved prefabricated building panel having a core of a plurality of layers of foam plastic material said core comprising;

• a first layer being thermoset foam plastic and having two opposed surfaces, one of said two opposed first layer surfaces securely affixed to a first surface of a second foam plastic layer, a third layer of thermoset foam plastic material having two opposed surfaces one third layer surface securely affixed to a second surface of said second foam plastic layer, said core having two opposed and substantially vertical core edges, and two opposed and substantially horizontal core edges defining thereby the size of said panel;
• an inner skin having an average predetermined thickness, a preselected surface configuration and sized substantially the same as and securely affixed to another of said third layer surface;
• an outer skin having an average predetermined thickness, a preselected surface configuration and sized substantially the same as and securely affixed to another of said first layer surface said improvement comprising:
• using said first layer as means to securely affix by bonding said skin to said second foam plastic layer and wherein said inner skin and said outer skin each is material selected from waferboard, oriented strand board, fiberboard, plaster board, sheetrock, wood panel, wire, wire reinforced paper, pressboard, particle board, plywood, metal, plastic, fiber reinforced concrete, poly-concrete and corrugated metals woods and plastics and between about 1 weight percent and about 20 weight percent of a borate compound encapsulated within at least one layer of said plurality of layers of foam plastic material.

A method for deterring the infestation of a prefabricated building panel by ants and other wood affecting insects by encapsulating a borate compound into a core material of said building panel said core being a foam plastic, said method comprising:

• adding between about 1 weight percent and about 20 weight percent of said borate compound into at least one component of said foam plastic;
• agitating to evenly disperse said borate compound throughout said at least one component of said foam plastic to form a first mix;
• rapidly and evenly interspersing a predetermined amount of said first mix with a predetermined amount of remaining components of said foam plastic forming a second mix which upon curing forms said foam plastic;
• and
• causing said second mix to cure onto and be attached to at least one skin of said building panel.