I have some spalling on my basement walls. It's not a huge deal as far as problems go (it's ancient... like it happened decades ago so I believe it's more cosmetic than structural) but I want to sell so would like to get it skim coated. My problem is I have no idea who does this type of work. I checked concrete contractors in the yellow pages and they mention doing foundations, but it seems more like pouring them or major work vs repairs such as this. Someone told me it might be a drywall contractor. Any ideas of where I can start looking for the type of person who does this type of work?