Oct 04
Not long ago we pulled the stair treads out of their forms. They didn’t look too bad for the first official try, but the concrete was too dry and as a result there are a lot of voids in the surface of the treads. We sealed a couple of them and it darkened the color quite a bit - they turned out to be a light brown color.
We’ll give it another go with a slightly richer mix (by adding some additional portland cement to the bagged concrete) and a little more water to see if we can get the faces smoother.