Gold Bond® Brand Kal-Kore® Plaster Base is a tapered edge gypsum plaster base with a 100% recycled blue absorptive face paper surface designed to permit rapid trowel application of Kal-Kote® Basecoat, GypsoLite Plaster, Uni-Kal® and X-KALibur® one-coat plasters. Kal-Kore Fire-Shield Plaster Base features a fire resistive Type X gypsum core to provide additional fire resistance ratings when used in tested systems. Kal-Kore Fire-Shield C Plaster Base panels have a specially formulated Type X core to achieve superior performance when used in specific fire-rated assemblies where the weight and number of gypsum board layers are a concern.