Does anyone have any good guidance about which types of paint can go on top of which, and which should in general be used where in the house, and what their properties are.
There are now so many types that I've lost track.
eg I can eggshell over emulsion, but not the other way round (unless I sand in a key first?). What about gloss, silk, and all the rest.
Is there an expert who could give us a summary?