True, but post #19 was referring to AL dusting on the “out flow”. This is just on the exposed seam edge. This product is basically the same as the MFM Peel and Seal, except for the application process. MFM is self-adhered and Veral is torched or mopped. I still say the OP’s roof is a self-adhered mod-bit, and can be easily determined by close examination of the seams.