Fastening device for wall panel joints

A joint between adjacent first and second wall panels wherein each panel includes outer and inner skins which are laterally offset relative to each other and which present first and second gaps along opposite longitudinal sides of the panel, and an insulating core which connects the inner skin in shear-transferring relation to the outer skin and which is exposed at the first and second gaps;

• said joint comprising:
• the first panel having a channel formed in the outer skin and extending laterally inwardly of said first gap;
• a clip member presented at the first gap and including an edge strip extending into said channel, a flange extending into said insulating core at said first gap and presenting a remote end adjacent to said inner skin, and a medial strip connecting said flange to said edge strip, said medial strip being generally parallel with said edge strip and disposed between the plane of said edge strip and the plane of said inner skin, and connecting means mechanically connecting said clip to said channel;
• a fastener extending through said medial strip, said core, and said inner skin and securing the first panel to a structural member;
• and the second panel having a tongue formed in the outer skin extending laterally outwardly of said second gap, over said edge strip and into said channel of the first panel.