How Long Does It Take For Wood Filler To Dry. This means your application needs to be fast, so it does not harden before you complete the application. 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. The best way to determine dry times is to look at guidelines for filler packaging.
