ive bin asked to clean the sign and orning for costa the sign is no swet but the orning is red and coverd in bird crxxxap also its that canvis merteril stuff not the glossy smouve type can any one help on how to tackel this cems ect wfp will not do that good a job on these types 
also i have a nother sign to clean its a 4k sign
and its like stainless steal or some type of shiny metel that looks like it will scrach easy any sejustions on cleaning this i was thinking wfp with a flocked brush ? then micro cloth round the leters then rinse again??
also i have a nother sign to clean its a 4k sign