Building debris trap for sloping roofs has foil or board held by mounting structure, partly in contact with roof, partly protruding upwards, covering foil or board fixed to device so as to at least partly span the trough

摘要

The building debris trap (2) has a foil or board held by a mounting structure (18), partly in contact with the roof and partly protruding upwards above the slope (4) of the roof. The foil or board bounds a collection trough. A covering foil or board (9) is or can be fixed to the device so as to at least partly span the trough.