Abstract: An assembly for securing roof panels at selectable pitch angles includes a ridge beam having a horizontal ledge for contacting the underside of the upper edge of roof panels and a horizontally extending drip flange which overlies this ledge and provides a downwardly open cap channel. A sealing strip of elongated elastomeric material is slidably received in this cap channel and also is provided with a downwardly open flange channel therein which coextends therewith and receives and grips the upper edge of an elongated ridge cover flange therein and the lower portion of the cover flange extends over the top of the upper edge of the roof panels. This ridge cover flange is thus permitted to pivotly adjust vertically within the elastomeric strip to mate with the pitch of the roof panels to be covered by the cover flange at the upper ends of the roof panels.