Ddydd Iau, 14 Medi, daethpwyd o hyd i RAAC mewn rhannau o do fflat yn Ysgol Trefnant yn Sir Ddinbych yn dilyn arolygiad manwl. Fel mesur rhagofalus, gwnaeth Cyngor Sir Ddinbych y penderfyniad i gau’r ysgol dros dro tra bo ymchwiliadau pellach yn cael eu cynnal.
On Thursday 14 September, RAAC was identified in areas of a flat roof in Ysgol Trefnant in Denbighshire following a detailed inspection. Denbighshire County Council as a precautionary measure took the decision to temporarily close the school whilst further investigations are undertaken.