Foot of my garden is an old stone shed I am making tidy inside and out. I want it to be warm and dry enough for use as an office or studio, maybe occasional guest sleeping. So far have new roof done with veluxes and plastered ceiling. Concrete floor poured onto Polythene sheet. Next job is interior walls, then pine T&G flooring and skirtings.
Walls are victorian, rough rubble, stone and mortar with brick reveals as was the way round here. Have completed quite a lot of patching and repointing with sand and cement and was planning to paint the inside only white without plastering. There is no DPC and probably no foundations either. It doesn't seem particularly wet but there is surely damp in that sort of wall.
So questions - Can I paint the stone and brick directly? I presume so but with what sort of paint? I had thought Lime would be too much of a faff for a building which although old is of no value. PVA and Vinyl Emulsion I am sure are bad ideas and will bubble and flake. Someone suggested using breathable Sandtex exterior masonry paint, is that a mad idea? Is there some better paint?
TIA, Tim W