Add Yahoo as a preferred source to see more of our stories on Google. Achieved by spraying, troweling, or rolling drywall compound onto your walls and then "knocking it down" with a knockdown knife, ...

Achieved by spraying, troweling, or rolling drywall compound onto your walls and then "knocking it down" with a knockdown knife, this texture originated in the early 1990s. While the texture's ...