A method of producing carpet having the steps of: providing a carpet having a pile side formed from yarn fibers projecting through a primary backing layer, and an underside region comprising back stitch yarn fibers and the primary backing layer; applying effective repellency enhancing amounts of a first repellency enhancing compound to the pile side; applying a liquid repellency enhancing compound to the underside region to provide improved liquid barrier properties in the region; and applying separately a coating or latex layer to the underside region.