01
Inspect the complete trough
Evaluate liner seams, slopes, outlets, end conditions, expansion, substrate and overflow risk. A small visible split may be one symptom of an undersized or restrained metal system.
02
Coordinate the slate edge
The lower slate courses must discharge into the gutter while allowing access for liner renewal. Plan removable courses or accepted repair details instead of burying critical seams beneath inaccessible stone.
03
Provide emergency drainage
Clogged outlets or extreme rainfall can raise water above normal levels. Overflow provisions should direct water visibly and safely rather than into concealed walls.