Insulated roof panel

A composite roof panel comprising inner and outer skins which are connected in shear-transferring relation by an insulating core. The outer skin presents marginal connecting means, a first of which is adapted to receive and to be bent, i.e., closed, about a second connecting means of an adjacent panel to provide a standing seam connection at the exterior face of the roof structure. During closure, the first connecting means is bent in one direction and experiences only minor bending stresses. Hence, a large number of different types of decorative coating materials can be applied to the outer skin. The inner skin presents complementary mating elements which provide a connection between adjacent panels at the interior face of the roof structure. Means adapting the panel to be erected in end-to-end overlapped relation and in side-by-side interlocked relation is disclosed.