Although lime mortars and renders need to be repaired or replaced periodically, a traditional soft lime mortar will help a building to tolerate a degree of moisture and movement.
Er bod angen i forteri a rendradau calch gael eu hatgyweirio neu eu hailosod yn gyfnodol, bydd morter calch meddal traddodiadol yn helpu adeilad i oddef rhywfaint o leithder a symudiad.