Built in cupboard Mitchell. No access there. Looks like remove the plaster to see what we have to deal with. Tks Dawn

Thanks Mitchell, we’ll have to cut into the plaster. Can’t see the track in the cavity with the door there but even if you could, no access. Kind reg ...

@MitchellMc Great thanks for the advice.

I am looking for a sealant / treatment for bathroom shaving cabinet mirrors. Mirror do not last even a year before deteriorating. Up to 3rd replacemen ...