Hi. I have recently had a new conservatory and to reduce cost at the time i had it left at where you can see the concrete blocks. Do these need to be boarded then skimmed or can plaster be directed directly to the blocks. If boarded would it need to be battoned then boarded or could they be dabbed. If plastered straight onto blocks what plaster would be best and what would be the best way to go about it.
Thanks for any help offered.