Wood Hardener For Rotted Wood PC-Petrifier® Wood Hardener | Environmentally Friendly Restoration – PC Water Based Wood Preservative If you have structural wood damage, please see our PC-Rot Terminator. PC-Petrifier is a single component adhesive, formulated to fully penetrate and revitalize rotted wood. Modern technology has allowed us to develop a... Do not use in conjunction with PC-Wood Guardian or other Borate products. Protective Coating Co. PC-Woody Off-white Epoxy Adhesive at Improve the hardness and minimize damaged wood removal Prepares wood for filling, priming and painting PC Products 084441 8 Oz Wood Hardener Seal and restore rotted soft wood fibers in window sills, sashes, frames, trim, decorative beams and columns, etc. Apply to exposed wood grain to protect from damage. PC-Petrifier can also be used to prepare old wood for priming and painting.