Cardinal Building Systems is a green building integrations company that specializes in Structural Insulated Panels (SIPs).  We are here to help create Affordable, Green, Energy Efficient structures that exceed the model Energy Code. What are SIPs?  SIPs are extremely strong super insulated structural panels used for exterior walls, roof, and floors. Our R-Control SIPs are the only SIPs available with Perform Guard which prevents termites and carpenter ants and Frame Guard which gives a 20 year warrantee against mold and mildew.