FLOOR CONSTRUCTING METHOD USING DOUBLE-FACED ADHESIVE SHEET

PROBLEM TO BE SOLVED: To provide a floor constructing method using a double-faced adhesive sheet, which prevents generation of floor squeaking/tacking noise even in a cold season, and achieves connection between a floor finish material and floor substrate with good workability. SOLUTION: The floor constructing method is carried out by providing the double-faced adhesive sheet 1 consisting of a synthetic resin foam body and adhesive layers on both sides thereof, sticking one of the adhesive layer surfaces to a rear surface of the floor finish material 3 or a front surface of the floor substrate 4, and then sticking the other adhesive layer surface to the front surface of the floor substrate 4 or the rear surface of the floor finish material, to thereby connect the floor finish material 4 and the floor substrate 4 together. According to the method, an adhesive forming at least one of the adhesive layers of the double-faced adhesive sheet has a storage elastic modulus of 3.0×105 Pa or less, when measured by a dynamic viscoelastic spectrum at 5 deg.C. Preferably, the adhesive layer surface of the double-faced adhesive sheet, to be stuck onto the front surface of the floor substrate 4 partially has a masking member 5 laminated thereon.