10 the final step of using the repair device to close the unsightly opening in the wall 32 is to attach the device as shown in fig6 by means of screws 44 the insulation board 18 fits in and substantially fills the rectangular hole 40 the cover 10 can then be painted to match the wall if desired in this manner the wall 32 has been repaired very quickly and economically if the hole 34 was intentionally formed to provide access to plumping fittings electrical conductors or the like the repair device functions to provide a removable opening so that access can be reestablished when necessary instead of using screws 44 the repair device can be mounted on wall 32 by use of adhesive on the coverboard rearward surface peripheral clear area 26 in which case the repair device is permanently secured to the wall fig7 and 9 shown an alternate means of employing the device of this disclosure in fig7 the repair device is shown pushed against the wall 32 so that the metal foil 28 is pressed against the opening 34 the purpose of the step shown in fig7 is to imprint an outline of the opening 34 onto foil 28 the insulation board 18 is preferably.