structures are connected to each vertical connector strip surface in a further embodiment of the present invention the compliant sealing structures are absent from the building panel mating surfaces instead the protuberant 310 and groove 390 structures are shaped in a tightly close fitting manner the vertical mating interfaces are similarly arranged in a tightly close fitting manner so that there is no space between the mating surface of the vertical connector strip and the corresponding mating surface 415 of the oblique vertical mating structures 440 thus all the mating surfaces provide sealing through their precise tight fitting proximity the other advantages and features of the present invention remain in yet another embodiment of the present invention the upper 220 and lower 230 edge defining structures and optionally the lateral edge defining structures 240 250 are multi lobed corrugated interfaces covered sealing membranes and the like an embodiment of a method of the present invention is now set forth a building main structure is constructed having vertical connector strips the building panels and the vertical connector strips have pre affixed compliant sealing structures a start panel comprising a protuberant structure and typically two spaced apart aligning members is positioned and connected to the building structure at the lowest position of a planned column of building panels optionally a plurality of start panels can be positioned and connected to the building structure in order to create the appropriate lateral spacing involving the start panels and the vertical connector strips for a plurality of the planned columns of building panels the first building panel is then lifted making use of the convenient transverse through holes 370 on the aligning members 260 and hoisted to close proximity with the building structure the first building panel.