Now that the snow is finally clearing, we noticed that the 10-12 concrete steps leading to our front door are literally crumbling away. Its as if a top layer has disintegrated exposing the rock component and rough surface of the concrete. How do I fix this? I noticed some of my neighbors have done DIY jobs and skim-coated over the mess, but I also notice that is now crumbling too. Is it worth calling in the pros? My husband says it has nothing to do with salt use, but I say the previous owners were salt-happy and thats what caused this! Thoughts?