I will be honest with you. I have never cleaned an awning this size. I have cleaned a few small ones that just had some mold and mildew on them. They came out great but this one has not been cleaned in probably 10 to 15 years and the pollution on it is unbelieveable. If you can walk me through it and give me an idea on price that would be great because I have no idea on what kind of time this would take. I tested a couple spots with chlorine and simple cherry and also a sodium hydroxide product and brushed it and it did nothing. It was color safe though. It is vinyl. I don't want to get into something with out proper knowledge of how to clean it!! I also don't see how it can be done properly without a lift. Just trying to be safe!! Let me know if you think you can help!!!! I just don't have much experience with awnings. Thanks Ron!!!!