Dry Flex 4 2-in-1Repair Care Dry Flex 4 2 in 1 is an elastic repair resin, filler supplied in a single cartridge, for fast timber repairs and splicing. Can be painted after 4 hours and used all year round. This flexible repair compound is very quick and easy to apply with excellent modeling qualities and slump resistance. Once cured, the product can be treated like wood (planed, sawn, nailed, screwed, painted and stained)