The sharp straight edge 40, 59 of the scraper blade 18, 50 is used for dislodging and scraping a layer of material from a planar surface, i.e., a flat surface such as a wall, floor or window glass, and the blunt rear end of the arrowhead-shaped blade deflects the scraped material away from contact with the region of the blade clamp 16 gripping the blade shank portion.