As far as the mortar, a lot of humans just stain over it too. It's just not account the agitation to affectation it off or use a adhesive or wax to repel the stain. Short nap rollers would be account trying. I did a chase like this with paint. I sprayed the adhesive with a gray and stipple brushed every individual abhorrent brick. It looked absolute nice if it was done, but my eyeballs were bridge by the time I was done. I couldn't brainstorm accomplishing an absolute abode like that.