Tile Gap Refill AgentTile Gap Refill Agent is a amazing super bright white tile gap filling agent that is waterproof and mouldproof! Use for bathtub tiles, washbasin, bathroom toilet tiles, balcony sink, porch tiles, corridor tiles and other cracks landscaping. For sealing joints on buildings, windows, interior wall surface, ceramic tiles joints, doors, stairs, and for filling cracks in walls. It is an amazing tile gap filling agent that is waterproof and mouldproof!