Cuprinol Ultimate Repair Wood Hardener is a quick-drying wood hardener for the repair of decayed wood, providing a firm base before repairing with Cuprinol Ultra Tough Wood Filler.
Identify the full extent of any decay by probing the wood with a sharp instrument. Cut out all badly decayed and very soft wood back to a sound base.
Always do a test area before starting any project and follow the manufacturer's instructions on the container at all times.
Avoid contact of fluid with sensitive surfaces such as paint or plastic. Reseal can after use.