The present invention relates to an apparatus as well as systems and methods for masking ceiling or wall fixtures, such as recessed light fixtures, during residential and commercial painting and drywalling. Through the use of an insert mask, a user can quickly and safely mask a fixture without the use of special tools or ladders. Typically, the user positions the insert within a defined opening on the ceiling or wall fixture. The insert is fully inserted into the opening whereby a retaining surface on the insert creates a friction fit between the fixture and the insert. While the insert frictionally resides within the opening, any overspray or misapplication of painting or drywalling material is captured by a protective surface of the insert. Following the material application process, the insert can be removed from the fixture. In an embodiment, the insert mask system includes an insertion tool for insertion and removal of the insert from the fixture. Preferably, the insert is reusable and recyclable resulting in less waste than current masking practices.