The correct duration comes from the product or process
Paints, adhesives, sealants, finishes, repair materials and other products can have several timing milestones: working time, tack-free time, recoat time, handling time, return-to-service time or full cure. The names and requirements vary.
Because chemistry, temperature, humidity, thickness and substrate matter, this site does not publish universal safe waiting times. Use the current manufacturer instructions, technical data, contractor guidance or other authoritative requirement for the exact product and application.
Use the wait as a scheduling input
Once you have the applicable time, the Drying / Curing Wait Planner can combine repeated active steps with required waits. That helps answer planning questions such as whether a multi-coat task fits in one day or extends into another work period.
Do not use the calculator to justify shortening a stated wait. If conditions fall outside the product instructions, seek appropriate product-specific guidance.
Plan the return to service separately
A surface can feel dry before it is ready for heavy use, cleaning, loading or exposure. Treat the manufacturer’s relevant milestone as the finish condition rather than assuming the first sign of dryness means the job is complete.