Building construction composite having one or more reinforcing scrim layers

The present disclosure is directed to a composite useful as a building construction material, in which one or more textile scrims are attached to a nonwoven mat. In one embodiment, a high elongation scrim layer and a low elongation scrim layer are attached to a nonwoven mat to provide high impact resistance and enhanced structural support. In a second embodiment, a nonwoven mat is reinforced with a single scrim layer having both high elongation and low elongation yarns to form a composite. The scrim layers are preferably adhesively bonded laid scrims, although other scrim types or combinations thereof may also be used. Preferably, the high elongation material is made of polyester, the low elongation material is made of glass, and the nonwoven mat is made of polypropylene. The resulting functional composite may be used as a housewrap or roofing reinforcement on vertical, horizontal, or angular exterior surfaces.