benpost wrote:
hi diy'ers
considering whether to permanently remove the HRVs in the bedroom and
lounge.
not worried about filling in the outside holes where there is a cage
thing high up on the outside wall.
but would like to fill in the internal hole which has a diameter the
width of a double power socket, about 8 inches?
whats the best way to fill this so it ends up a smooth wall again?
thanks

If its blockwork, block, mortar, plaster..

If its studwork, plasterboard and plaster.