HH-66 vinyl Cement is used primarily for Tarp repair, The Product is Blended to be a long lasting application for tarp repairs. Please Clean Tarps with a mild Abrasive product (Comet and water, 409, or Purple De greaser). Make sure the Vinyl is completely dry, Apply Glue using Paint Brush or Roller to Tarp and patch. Let Glue dry until tacky. Apply patches and let dry. Apply Baby Powder to outside of Patch and on Tarp, This will prevent Patch or Tarp from sticking together after the Glue has set.