a building materials composite is provided , having a first perforated coated scrim , a second perforated coated scrim , and a breathable thermoplastic film bonded to and sandwiched between the first and the second perforated coated scrims . further , a method of manufacturing a building materials composite is provided , the method having the steps of coating a fabric , perforating the coated fabric to make a perforated coated scrim , bonding one side of the perforated coated scrim to one side of a breathable thermoplastic film , and bonding a non - woven fabric to a second side of the breathable thermoplastic film .