I also propose to introduce additional requirements that conservatories should not be heated or cooled if they are to be considered exempt from the Building Regulations.
Hefyd rwy'n cynnig cyflwyno gofynion ychwanegol, sy'n dweud na ddylid gwresogi nac oeri ystafelloedd haul os ydynt i gael eu hesemptio o'r Rheoliadau Adeiladu.