Premier Building Systems. PBS Building Wrap and Weather Barrier for structural insulated panels helps reduce the potential for mold and mildew in structures. The breathable, weather-resistant barrier features micro-perforations that allow vapor to escape from behind the wrap, while preventing water infiltration. A cross-woven design resists tears around fasteners and during installation, while an available factory-applied treatment helps the wrap resist degradation from normal UV exposure for up to 300 days. 800.275.7086. www.pbssips.com.