A building material (40) is provided comprising fiber-cement (10)
laminated to gypsum (20) to form a single piece laminate composite. This
single piece laminate composite exhibits improved fire resistance and
surface abuse and impact resistance, but achieves these properties
without the excessive weight and thickness of two piece systems.
Additionally, because of the reduced thickness, the preferred laminate
building material is easier to cut and is quicker and easier to install
than two piece systems. Furthermore, forming the fiber-cement and gypsum
into a single piece laminate eliminates the need to install two separate
pieces of building material, thereby simplifying installation. In one
embodiment, a 5/8" thick laminate composite is provided comprising a 1/2"
thick gypsum panel laminated to a 1/8" thick fiber-cement sheet, the
laminate composite having a fire resistance rating of 1 hour when
measured in accordance with ASTM E119.