Hi I have a conservatory that was finished internally with a textured paint this was in when i moved in some 20 years ago. This started to come away from the house wall and i have now completely peeled this all off. it was painted onto bare plaster, So i know have a bare plastered wall and need some expert advice on how to re-texture this wall. somebody has advising using johnson jontex and given me a tub but i see this is an exterier finish and therefore mentions nothing about applying to bare interier walls, can this be used our would something else be better, and if this can be used a assume the plaster would be best sealed. your advise would be appreciated