These extruded plastic sections are designed to form chamfered corners in both columns, beams and expansion joints on walls.
To provide easy fixing to corner moulds, the nailing flange type chamfer is the most suitable option, which allows safe stripping and ensures maximum re use.
After it has been used, im unable to maintain a straight edge. Prefer timber fillet, but its impossible to get hold of.
We use the flanged version, and it does the job. Availability is key.