| 摘要 |
An acoustic insulating sheet (30) for a floor asssembly comprises a foam layer (40) of a mixture of open cell and closed cell foam particles, typically of reconstituted foam, and one or two moisture-proof layers (42,44), typically of polypropylene film, affixed to at least one of the upper and lower surfaces of the foam layer (40). The insulating sheet may also include an adhesive layer. The moisture-proof layer or layers (42,44) are factory bonded to the foam layer, and the sheet is supplied in roll form to a building site, where it may be used in a floor assembly (16) of a building structure (10). The floor assembly comprises an underlying floor layer (24) and an insulating layer comprising a number of insulating sheets (30) of the invention provided on the underlaying floor layer. The floor assembly includes a further flooring layer such as a screed (32) located on the insulating layer (30). The insulating sheets may be laid side by side in abutting relationship wihh each other, with the moisture-proof layer of a first sheet overlapping a second, adjacent sheet, to form a continuous moisture-proof layer. The insulating sheets (30) may turn up through 90 degrees at a wall (22) to acoustically insulate the flooring layer (32) of the floor assembly from the wall, without the need for any separate insulating flanking. <Figure1> |
