Drwy gydol yr wythnos hon, mae pob awdurdod lleol, sydd â chyfrifoldeb statudol dros gynnal a chadw adeiladau ysgol yng Nghymru, wedi bod yn adolygu eu hystâd ysgolion er mwyn dod o hyd i unrhyw rannau a allai gynnwys RAAC.
Throughout this week, all local authorities, which have statutory responsibility for maintaining school buildings in Wales, have been reviewing their school estate to identify any areas suspected of containing RAAC.