This project focuses on the essential preparation phase of a room renovation, specifically the drywall primer application. Initially, the walls and ceiling were fully taped and mudded to establish a flat surface. Subsequently, an airless sprayer was utilized to apply an even coat of primer over the entire area. Consequently, the porous drywall paper and joint compound were properly sealed, creating a uniform base. Ultimately, this thorough preparation step ensures that the subsequent topcoats of paint will adhere correctly and display a consistent finish throughout the space.