With attic ceilings it is particularly important to ensure that the roof covering is sound and to deal with any signs of water penetration as quickly as possible in order to minimize damage.
Gyda nenfydau atig, mae'n arbennig o bwysig sicrhau bod gorchudd y to yn gadarn a delio ag unrhyw arwyddion o ollyngiadau dŵr cyn gynted â phosibl er mwyn osgoi cymaint o ddifrod â phosibl.