Can you see what is wrong in this picture? It's the roof vent...it's broken. Recently a homeowner called and said they were getting a mystery leak. We crawled on the snowy roof to find not only that they had ice dams, but a broken power vent. Many home owners don’t realize that their power vents have plastic housings that are cracked and letting all sorts of weather into their home. If you think you have plastic vents call Casey Roofing Inc today to inspect your roof. Brittle and cracked plastic vents are a huge problem on your roof.