I like that it says you can clean it and not to use subbing or high pressure but I don't like that they say it doesn't damage the shingles as many customers seem to clean their roofs in hope to prolong the life and I don't want to mislead them.
I'm going to give this local bank a price to clean their roof but I wanted to get your thoughts on what type of roof it might be and how to clean it. It looks like slate from the ground but I'm assuming its a composite of some sort. Is this cleaned like asphalt shingles or would a lower mix be the way to go?
I have a customer that has a screened in porch with plastic enclosures for an all year use. Same type of pull down plastic that you see at restaurants to achieve the same all year round usage. My question is how does SH and detergents effect these plastic covers? The homeowner said she was told not to use anything but water and a little dawn soap. Do I need to avoid these completely? Maybe roll them up? Thanks