My daughter ran into a stucco post on the outside of our garage with a golf cart. It is stucco on the outside but inside is styrofoam to make the decorative looking columns on the edge of the garage. I have read the instructions on repairing stucco for lath and plaster but can't find any instructions that mention the styrofoam factor. Is is ok to just fill in with stucco and try to follow the form of the column or do I have to replace the entire column? Thank You

We have an 1800's farmhouse (in central Vermont) which we would like to side with cement board. Currently there is wood siding. There is blown-in insulation in the walls, and in interior areas where there's new sheetrock (kitchen and bathroom) there is 6-mil plastic under it. Elsewhere there are plaster walls or old sheetrock over ?tarpaper. Under the siding is thick (1"-ish) wooden sheathing, and I don't know if there is tarpaper or whatever in there too. The walls are irregularly spaced 2x4-ish studs. We will also be removing and replacing all the windows and doors. It is unlikely that the thickness of the walls is anything standard anyway, as nothing else in the house is. Two main questions: 1) Should we remove the old siding? We aren't concerned about the wall thickness so much, but I wonder if it will make instilation harder or easier, or if it is better in terms of moisture (I understand it will be time-consuming, costly for disposal, etc). 2) Is there anything about the description of the house that makes "rigid foam insulation + tyvek + siding" not a good idea? Currently we don't really have any moisture problems and I don't want to create any!! Thanks.