 de-granulization, right? It could be a ventilation issue. It can be a tree that's a little too close to the house and its branches kind of are touching the actual roof. Or it could just be that your roof is 15 years old and it's gone through 15 summers in its time. But you're going to see a good sign of that by having all this granule either at your downspouts or if you do put your ladder up and you have gutters, you'll see a large granule buildup in your gutters themselves. Now,