The picture on the right shows a block paved patio that apart from being an eyesore also presented a hazard. This 50/50 shot shows the cleaned part where the grime and slippery surface has been removed. Similarly the sequence which follows for a pathway shows how a similar problem can be resolved. Areas of properties can be liable to the growth of algae, which can produce very slippery surfaces and after cleaning we have a number of treatments which we can apply to reduce the re-growth of algae.