HS Sturdy by Schönox is a hybrid active-dry technology-based rapid drying repair and smoothing compound suitable to provide a smooth finish on various substrates in interior areas. Schönox HS Sturdy can be installed as a true featheredge up to 2″ depths.

HS Sturdy repairs, patches, and smooths combining tasks for use on a wide variety of substrates, including concrete and gypsum, as well as wood, vinyl, and ceramic.