J-B Weld® Light Tan Wood Restore Premium Epoxy Putty is a hand-mixable epoxy putty specially formulated to repair and rebuild wood quickly and easily. When applied, it adds structural strength to areas of damaged or rotted wood. You can use it to fill, build, reinforce, or bond wood surfaces. After mixing, it forms a polymer compound that cures to the same density as wood. You may use it for exterior or interior applications. It contains no solvents and will not rot, shrink, crack or pull away.