Tomatoes and Debris clump

The tomatoes look OK and today was the first day of harvesting. Although the tomatoes taken today are small hopefully they’ll get bigger. If everything goes right I should be harvesting tomatoes through September. The Debris Clump next to the tomatoes has gotten quite large. This is two debris clumps from last year that merged into one. When dry, the entire mass can be pushed around the roof like a big mop head. Hopefully no roots penetrate the rubber. Since I’ve never done this to such a large scale I’m in unchartered territory. I need to find a roofer to help me out should a leak occur.