I am decorating my garage 5m x 2.5m although it is used as a storeroom not for cars. I would like to paint the floor. The floor is concrete you can see the aggregate, it is not screeded. In a few places the concrete has crumbled. I have started to patch the places where it is crumbled but I’m not an expert. What’s the best way to get a smooth floor I can paint that won’t be too costly ...Trevor
