System Three End Rot Kit is a comprehensive repair system designed specifically for the restoration and repair of architectural wood components damaged by dry rot, insects, extreme weathering, and general wear and tear. This kit a complete and permanent solution when all components are used together, although each can be used separately depending on the extent of the damage. It is particularly effective for treating wood where damage is limited to a portion of an otherwise sound structure. The End Rot Kit works by stopping the progression of wood rot and decay fungi, restoring wood damaged by rot or insects, and protecting architectural elements from further deterioration. The kit includes everything needed to complete a typical repair on windows or doors severely affected by rot, weather, and sun exposure. Inside, you will find Bor8Rods, Board Defense®, RotFix® Resin and Hardener, SculpWood® Putty Resin and Hardener, gloves, and detailed literature to guide you through the repair process. For repairs involving cracks or areas requiring a trowelable paste, SculpWood Paste is separately. Model Number: 4005K99