Building roof gutter protection sheet for exclusion of leaves consists of perforated metal sheet running length of gutter just below level of edges of gutter

摘要

The metal sheet (2) has many small perforations (3) and has a flat surface on either side of a centerline (5). The flat surfaces meet on either side of the centerline at an obtuse angle so that the whole width of the sheet is slightly convex in a downward direction. The gutter (7) may be a C-shaped section with the concave side facing upward and the perforated sheet closes the section, converting it into a D-section.