In need of a little advice… just spent $13k on a new flat roof (it is a 2 ply modified bitumen smooth (torch down) with aluminum coating) and am concerned about blistering on a 2 month old roof. In some areas the blisters are 3-4 inches wide and 1/4 inch high. The original roofer said not to be concerned… A different roofer just inspected it and said it wasn’t adhered correctly and that blistering “can shorten the service life of a roof, by increasing the membrane’s vulnerability to physical and chemical degradation”. What does this group say? I have pics: #roof #pub