Flashings & Ridges
Flashings are made from strips of galvanized metal in order to provide the essential weatherproofing at the edges of the cladding apart from making the finished job look neat. Flashings, depending upon their placement over the cladding, could be either longitudinal or transverse. Longitudinal Flashings run parallel to the valleys (Figure: 12) and are made to suit the profile of the sheets.
During installation, one must turn down their edge towards the valley in order to achieve best weather protection. Transverse Flashings, also know as Ridges, run perpendicular to the valleys. In order to achieve maximum weather-proofing, the bent edge of the Ridge must sit onto the profile of the sheet (Figure: 13). |