Quick drying liquid hardener for sealing and reinforcing decayed or rotted wood. Reduces moisture in decaying or rotted wood surfaces and forms a solid base for filling. Special liquid formula penetrates the wood to reinforce the fibers stopping further decay. One way breathable, no bleed. Great for door frames, window frames and sills, sashes, eaves, corner boards, columns, posts, garages, fences, antique furniture, and more. Water based. Brush on application.