This circular does not give advice on the technical requirements in the Building Regulations 2010 as these are matters covered by Approved Documents being amended.
Nid yw'r cylchlythyr hwn yn rhoi cyngor ar ofynion technegol Rheoliadau Adeiladu 2010 oherwydd eir i'r afael â'r materion hyn drwy ddiwygio'r Dogfennau Cymeradwy.