Thumb gypsum board is a type of high-quality drywall panel made from a core of gypsum (calcium sulfate dihydrate) sandwiched between two durable paper liners. Known for its smooth finish, ease of installation, and excellent fire resistance, thumb gypsum board is commonly used in interior wall and ceiling constructions in both residential and commercial buildings. It is lightweight yet strong, offering sound insulation and a surface that is ideal for painting or wallpapering. Due to its versatility and performance, it is a preferred material for creating clean, modern interior spaces.