PROBLEM TO BE SOLVED: To provide a face drainage material which enables omnidirectional proper drainage by simple work without being limited by uses, and which is excellent in strength, durability, etc. SOLUTION: This face drainage material is equipped with an approximately quadrangular face member 3 which is made of a synthetic resin and which has a continuous void by forming projections and depressions on a surface, and a permeable sheet 2 for covering the face member 3; an opening 10 is provided on arbitrary one of the sides of the permeable sheet; and an extension part 20 is formed by extending the permeable sheet 2 to the outside from the backside of the opening 10. COPYRIGHT: (C)2006,JPO&NCIPI
