hello everybody, have just joined the forum so please forgive my total lack of knowledge on the subject of plastering, i have many questions. I recently bought a 1950's semi that is in need of redecoration and am attempting to prioritize my baby son's room. There is only one flat smooth wall in the room, the other three are very rough, indeed, rough enough to scrape the skin off my knuckles. I don't have a clue what the material is, i can only describe it as looking like woodchip but not woodchip. Is there such a thing as roughcast plaster on internal walls? anyway if anyone knows what this is, can this stuff be scraped or sanded off the walls or is it a case of skimming over? thanks in advance