PLASTER OF PARIS ALSO KNOWN AS CROWN MOLDING OR CORNICES

Key Details  

• Material: The molding itself is made from Plaster of Paris (POP), a gypsum-based material that is mixed with water and poured into a mold to set. The molds used to cast the POP pieces are often made from fiberglass or silicone for repeated use.  

• Function: They conceal imperfections in the ceiling and wall junctions, absorb sound, and add a decorative, often intricate, design element to a room.  

• Design: POP can be easily molded into various shapes and patterns, from simple clean lines to ornate designs, allowing for high customization to match different interior styles.  

• Installation: The pre-cast POP pieces are lightweight and are glued to the corners using a white cement mixture or construction adhesive.  

• Limitations: POP is susceptible to moisture damage, so it is generally not recommended for high-humidity areas like bathrooms or exterior use unless properly sealed.