Filltite Styrene Free 2 Part Wood Filler is a two part system that creates tough repairs to almost any interior or exterior wood surface. It’s easy to apply and will fill cracks and holes to any depth or size and will harden in 20 minutes. It’s super strong and fast and once dry can be drilled and sanded and also painted or stained. It can be used to rebuild rotten wood, cure wet rot and prevent recurrence.