How Long Does Wood Filler Take To Dry. Deeper fills can take as long as six hours before they are fully affixed to the wood. Wood fillers dry fast and only take 30 minutes to 6 hours to harden.

Shallow repairs involving wood filler will only take 15 minutes to two hours to dry in most cases. It also means you do not have to spend a lot of time waiting before you can paint or. Along with dry time, the cure time will take additional hours.