I am going to paint the inside of my garage which is lined with regular breeze blocks. I am thinking of putting on a layer of diluted pva followed by regular emulsion. My worry is that the garage is adjoined by a boiler room with a gas boiler. There is also a small freezer in the garage. Both of these generate heat and the garage is always warm inside. If I use the pva layer could that generate condensation. Would a couple of layers if masonry paint be a better idea? Thanks in anticipation