Hi, I am laying a new roof on my newly constructed shop. I was wondering if it is alright to lay the fiberglass roll roofing in uncut sections, because it says on the instructions to cut pieces 12 to 18' long, but it seems better and easier to have less seams to me, to just lay the whole roll down. The roll is approximatley 35-40' long. Is there a reason that you do not lay the roll down uncut? The roof is a continuous, no chimneys etc., low slope, just a large flat surface. Thanks very much for any help. Let me know if this needs clarification.