Examples of mortared slate hanging still survive along the coast of Pembrokeshire, many of which are further enhanced by the later application of a colour wash.
Mae enghreifftiau o waliau llechi morter i'w gweld o hyd ar hyd arfordir Sir Benfro, ac ychwanegwyd haenen o liw at lawer ohonynt yn ddiweddarach sy'n eu gwneud yn fwy nodedig.