We just had a new roof put on our building. The crew left the hood cover unatached and rolling on the roof as well as a TON of grease! I guess I didn't realize that they were pouring the grease down our roof drains. It was an absolute disaster! The roofer had to come back because we are having a few leaks, now he is saying the warranty is void due to the amount of grease all over the roof and the rolling topper. I wish I could upload pictures, because this was ridiculous!