Why Might Concrete Appear Red or Chalky Under an Old Floor Leveling Layer?

Why Might Concrete Appear Red or Chalky Under an Old Floor Leveling Layer?

Removing an old floor can bring a few surprises. One of the stranger ones happens when the leveling compound starts coming up and the surface underneath looks red, pink, orange, or unusually chalky. Run a hand across it and you may even come away with powder on your fingers. So, why might concrete appear red […]