As steel gutters are not symmetrical, gutter angles are either internal or external.External corners are usually used on all 90 changes of direction except at the foot of a valley, where you would use an internal corner. Unlike most steel gutter systems, Lindab steel gutter angles are pressed in one piece, not welded which eliminates the risk for leakage..Angles should be supported by installing a fascia bracket with 150mm of the corner.
