Abstract: A composite intermediate panel comprises a structural layer providing the structural integrity of the composite intermediate panel. Pressure-sensitive adhesive layers are on opposite main surfaces of the structural panel, the pressure-sensitive adhesive layers applied in plant. A backing sheet layer is provided for each adhesive layer, the backing sheet layer adhered to the pressure-sensitive adhesive layer, and being peelable off the pressure-sensitive adhesive layer to expose the pressure-sensitive layer. Attachment units of rigid material are on one of the main surfaces of the building panel, the attachment units being positioned at a location where mechanical fasteners secure the building panel to a structure.

Abstract: A building panel comprising a fiberboard panel providing the structural integrity of the building panel. An insulation layer is laminated to the fiberboard panel, the insulation layer providing a required thermal value to the building panel. A functional layer forms an air barrier, a water barrier and/or a vapor barrier of the building panel. The functional layer is secured to the fiberboard panel on the opposite side of the insulation layer.

Abstract: A building panel comprising a fiberboard panel providing the structural integrity of the building panel. An insulation layer is laminated to the fiberboard panel, the insulation layer providing a required thermal value to the building panel. A functional layer forms an air barrier, a water barrier and/or a vapor barrier of the building panel. The functional layer is secured to the fiberboard panel on the opposite side of the insulation layer.