Notice some weakened wood around your home? Harden and revitalize any rotted or weakened wood with this 16oz bottle of wood hardener from PC-Petrifier. It's water-based and pre-mixed for easy use and clean up. Simply pour, brush or spray over any area you want to treat. It's great for use both indoors and out. If you notice rotted wood around window sills, trim, fences, decks, cellar or more, grab some PC-Petrifier wood hardener.