Asphaltic sheet materials including expandable graphite

An asphaltic composite sheet comprising:

• (i) a first asphaltic layer including an asphalt binder composition and a flame retardant other than expandable graphite dispersed within the asphalt binder composition, said first asphaltic layer having first and second generally planar surfaces;
• (ii) a fabric having first and second generally planar surfaces, said first planar surface of said fabric being in contact with the first planar surface of the first asphaltic layer;
• (iii) a second asphaltic layer including an asphalt binder composition and a flame retardant other than expandable graphite dispersed within the asphalt binder composition, said second asphaltic layer having first and second generally planar surfaces, said first planar surface of said second asphaltic layer being in contact with the second planar surface of the fabric;
• (iv) a concentrated region of expandable graphite at or near the second planar surface of the second asphaltic layer;
• (v) a release film removably secured to said second planar surface of said first asphaltic layer;
• and
• (vi) a polymeric layer laminated to said second planar surface of the second asphaltic layer so that the concentrated region of expandable graphite is disposed between the polymeric layer and the second planar surface of the second asphaltic layer.