PC-Petrifier is a single component adhesive, formulated to fully penetrate and revitalize rotted wood. Modern technology has allowed us to develop a water base wood consolidant that is environmentally friendly. PC-Petrifier's® low viscosity allows deep penetration into soft rotted wood fiber, restoring old wood to near structural integrity. Seal and restore rotted soft wood fibers in window sills, sashes, frames, trim, decorative beams and columns, etc. PC-Petrifier can also be used to prepare old wood for priming and painting. Apply to exposed wood grain to protect from damage. Not for structural repairs. If you have structural wood damage, please see our PC-Rot Terminator®. Do not use in conjunction with PC-Wood Guardian™ or other Borate products. Directions: Area to be treated must be dry, free of dirt, dust and grease. Remove loose paint varnish or flaky wood. Generously apply PC-Petrifier® by pouring, spraying, brushing or sponging onto area to be restored. Repeatedly saturate the rotted wood fibers to enable the deepest possible penetration. Let cure until solid and not tacky to the touch.