Fast-drying paintable filler that goes on pink and dries off-white Fills cracks and holes in a single application Suitable for interior and exterior use Ideal for filling holes and cracks in walls, ceilings, doors and windows Suitable for interior and exterior use on wallboard, wood, masonry, plaster, primed nail heads, plasterboard and fibrous cement Selleys Spakfilla Rapid is a ready-mixed lightweight filler that needs just one application. It goes on pink and dries off-white so you know when it’s dry enough to sand and paint.It’s fast drying, virtually non-shrinking, non-cracking and can be sanded and painted with oil or water-based paints quickly after applying. Ideal for filling cracks and holes on surfaces where no structural movement occurs.