[the roofing god]

ROLL IS TYPICALLY PAPER BASE SATURATED WITH TAR WITH CERAMIC GRANULES IMPLANTED ON IT,NEEDS TO BE TARRED IN PLACE--rating1

modified bitumen has a polyester base,asaturated with tar and rubber additiveswith smooth or ceramic granule finish,can be tarred down,or better yet flame welded at seams to make it as one piece of roofing when complete rating 10

 

[the roofing god]

post pics,it sounds like modified bitumen,which can give you 10-20 years or longer
rolll roofing(90#)can be torn by hand but not the mod. bit.