Patent ID: 7934353

Claim:
A panel ( 1 ) comprising, in succession: a first rigid board ( 2 ) forming a backboard of the panel; a first thermally insulating layer ( 3 ) borne by the backboard; an impervious covering ( 4 ) covering the first thermally insulating layer; a second thermally insulating layer ( 5 ) which partially covers the impervious covering and a second rigid board ( 6 ) covering the second thermally insulating layer; and a film ( 8 ) which covers at least part of the impervious covering which is not covered by the second thermally insulating layer, the film comprising at least one protective portion ( 9 ) and at least one spew portion ( 11 ) adjacent to the protective portion and separated by a pre cut, the protective portion and the spew portion being bonded to the impervious covering and being able to be detached from the impervious covering independently of one another by the precut.