The Ronseal High Performance Wood Filler is an easy-to-use filler that dries rapidly and can be sanded and painted over, providing a sturdy and natural-looking repair. It's perfect for both DIY enthusiasts and professional woodworkers tackling restoration and renovation projects. The filler rebuilds rotten wood, hardens in just 30 minutes, and won't shrink or crack. It can be used both inside and out. The filler comes in a 550g size and is available in a natural color.