Gyproc filler is a finishing compound used to fill gaps, joints, cracks, and surface imperfections in plasterboard or drywall systems. It provides a smooth, even surface in preparation for painting or other decorative finishes. Commonly applied during the jointing process between gypsum boards, Gyproc filler helps create seamless wall and ceiling surfaces by covering screw holes, tape joints, and minor surface defects. It is easy to apply, dries quickly, and can be sanded to achieve a fine, professional finish, making it an essential material in interior wall finishing.