In this study, two single slope solar stills one inclined at an angle equal to the local latitude of Akure (7.25°N) and the other inclined at the local latitude plus 10° (i.e. 17.25°N) were constructed and tested at Akure Nigeria on latitude 7.25°N, longitude 5.08°N and elevation of 115 m. Both stills were covered with glass for a set of experiments and Perspex for another set of experiments. Experimental results show that glass covered stills performed better than Perspex covered ones for the two tilt angles, corroborating results of past investigations. However, contrary to reports of some past investigators that inclinations with the same angle as the local latitude are most productive, this study reveals that still tilt angles of local latitude plus 10° are more productive than those at angle of inclinations of the local latitude.
