The duration required for joint compound to reach a state suitable for sanding and painting depends on several factors. These include the product type, the thickness of the application, environmental humidity, and ambient temperature. Insufficient drying can lead to adhesion problems with subsequent coats of paint and potential cracking in the future.
Properly dried patching compound ensures a smooth and durable surface for finishing. Historically, achieving optimal results has relied on a combination of experience and observation, judging dryness through visual cues and touch. Understanding the factors influencing this process minimizes rework and ensures long-lasting repairs.