RHAN 2Diwygio Rheoliadau Adeiladu 2010
Cymhwyso gofynion effeithlonrwydd ynni4
Yn rheoliad 21—
a
ar ddiwedd paragraff 4(a) dileer “or”;
b
ar ôl “extended” ym mharagraff (4)(b) mewnosoder—
to heat the conservatory or porch; or
c
in which a fixed heating appliance has been provided to heat the conservatory or porch.