Over time, roof tiles get covered in moss or algae that could become dangerous in the long run. It is important to consider a cleanup before it is too late. The first day after you have installed ...

Muhindo shows the writer around one of the sites that she had been contracted to clean. Photo Rachel Mabala. Profit growth. With six cleaning machines now, the roof tile cleaning company has grown its ...

Engineering students have created a roof tile coating that when applied to an average-sized residential roof breaks down the same amount of smog-causing nitrogen oxides per year as a car driven 11,000 ...