through is discharged the upper venting plane 180 supports the task of the lower venting plane 179 and additionally ensures the fast drying of the sarking membrane 139 a segment from the eaves region 130 shown in fig1 is shown in fig1 and specifically together with a venting band 140 this venting band 140 is structured similarly to that half of the venting band 60 which is shown in fig5 the side strips 141 142 however form here an angle of 90 degrees in the walls 143 144 145 of venting band 140 through holes 146 to 149 are provided extending parallel to one another the one side strip 142 rests in contact on a front side 150 of a rafter 151 while the other side strip 141 rests on a counterbatten 152 and abuts a transverse batten 153 fig1 furthermore shows that the venting band 140 is connected with the counterbatten 152 and the rafter 151 across connection elements of which only two are provided with the reference numbers 181 182 these connection elements can be for example nails while the venting band 140 can be adhered via its side strips 141 142 with the rafter 151 or the counterbatten 152 it is however of advantage if the venting band 140 is additionally fastened via connection elements with the rafter 151 or the counterbatten 152 respectively the side strips 141 142 can be comprised of only one material or also of several materials disposed.