Ogee guttering has a flat back and is supported on a projecting eaves course of brick or stone, or screwed directly to the wall or a timber fascia board.
Mae gan gafnau pigfain gefn gwastad ac fe'u hategir gan fondo bargodol o frics neu gerrig, neu caiff y cafnau eu sgriwio'n uniongyrchol i'r wal neu astell dywydd o bren.