AIR-TIGHT MATERIAL FOR PIPING AND PIPING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an air-tight material for piping and a piping method whereby execution work is facilitated, an air-tightness can be surely provided in an insertion hole of a pipe. SOLUTION: In an air-tight material 1 for piping mounted around an insertion hole of a pipe formed in a face bar of floor surface material or the like to provide air-tightness between the insertion hole and a peripheral surface of the pipe inserted in the insertion hole, the air-tight material is formed of sheet material having a property of extension/contraction, an opening hole 11 a little smaller than an external diameter of the pipe is formed in almost a central, part.