What is the role of caulking in window installation?

Caulking plays a crucial role in window installation primarily by preventing moisture infiltration. It acts as a sealant that fills gaps and cracks around windows, ensuring that water does not seep into the interior walls, which could lead to mold growth, wood rot, and structural damage over time. By creating a watertight barrier, caulking helps maintain the integrity of the building envelope and contributes to overall energy efficiency by preventing drafts and moisture from compromising the insulation. This aspect makes it an essential part of the window installation process, as it directly impacts the longevity and performance of the window and the home. While caulking may contribute to soundproofing and can have some aesthetic benefits, its primary and most critical function in this context is to prevent moisture intrusion.