Ogee 135 degree gutter angles (sometimes referred to as 45 degree angles), are generally used on conservatories and bay windows. As the Krown Ogee gutter is not a symmetrical system, these must be ordered as either internal or external. The best way to understand the difference between an internal and an external corner is to view the pictures – and remember that the flat side of the fitting always fits against the fascia board.
These internal angles are most commonly found at the point where a bay window meets the main house gutter.
The guttering should always be supported by a fascia bracket within 150mm (6”) of any 135 angle. This is to prevent water from collecting in the fitting, which in turn would cause the gutter angle to drop down, putting stress on the joints and reducing the flow rate.