Hello, Mr. Clapp! Thank you for your feedback! We're certainly working on English improvement with all of our team members, to make communication easier on site. The water pressure used on cleanings is the lowest, although equipment is very loud. I record explaining it over the phone, as well as explained that roofs with a lot of moss growing for a long period tend to present damages: moss works as sponges, keeping moisture on the surface for longer, which is bad for either your shingles and plywoods underneath. And once you remove the moss, everything is reveled. Having said that, we'd be happy to offer a free inspection, to understand what damages you have and the causes of it. You can compare our report with others from different companies, to make sure we're telling you the truth. We definitely want to assure you're satisfied and hope we can work together in future again. Let's make it right!