and at least one upstanding edge 20 metal panels 16 overlay a typical roof having common rafters 22 as shown in fig3 6 as is known in the metal roof art metal panels 16 are normally attached to roof 12 by tie downs on the base edge of the roof eave adjacent panels 16 are attached by means of a roof panel clip 24 that slip fits over adjacent upstanding edges 20 as shown in fig7 a metal or plastic roof panel clip 24 includes an outer member 26 and an inner member 28 constructed in the form of a substantially c shaped bracket inner member 28 includes outer edges 30 disposed within outer member 26 to create a biased force such that when adjacent edges 20 are slip fit into roof panel clip 24 the adjacent edges 20 are biased together to prevent separation roof panel clip 24 permits a slight lateral sliding motion between adjacent metal panels 16 thereby allowing for uneven thermal expansion or contraction due to environmental conditions on the roof roof panel clip 24 creates a water proof connection between adjacent panels 16 ventilated cap system 10 includes a specially shaped sheet metal utility cap 40 attached between opposite sides of roof 18 and over.