could clean tons of air pollution from Southern California each day. In a laboratory experiment, engineering students found that ordinary clay roof tiles sprayed with titanium dioxide removed 88% ...

Over time, roof tiles get covered ... rains through the gutter. Having chemicals lurking in the gutter can then pose a threat,” a worker at Best Choice, a cleaning company revealed.

Clay tiles do more than ... a soft brush is ideal for cleaning especially dirty areas. Finally, thoroughly rinse the entire ...

This week’s article was inspired by a question about a metal roof. Our reader ... cedar, and tile roofs. Question: I am looking for something to clean glass table tops, mirrors and windows.