We just bought a townhouse with a flat modified bitumen roof. Soon after our purchase, the HOA had a roofing contractor patch up the roof. I noticed today that the scupper box was overflowing, so I had my husband try to figure out what was clogging it. He couldn’t unclog the downspout, but he removed a bit of the material clogging the gutter, and it was the roofing material. Furthermore, when he would touch the roof, the roofing material would disintegrate like wet sand. Is this normal? What should we do?
I’d appreciate your input. thank you!