Henry  Underlayment Patch and Skimcoat  7 *Sub Brand: 549 *Product Type: Underlayment Patch and Skimcoat *Container Size: 7 lb. *Indoor or Outdoor: Indoor *Portland cement-based *May be applied over most surfaces for a smooth finish beforeinstallation of permanent flooring * Installs from feather edge to any depth *For patching and repairing subfloor surfaces prior to installing all types of flooring *No pr