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.

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