PERMANENT Leave it in place for future easy access
It won’t blow away, it’s tested for hurricane force winds
TEMPORARY roll it up again and use it somewhere else.
EASY TO CUT to size with a pair of ordinary snips.
AVOIDS PUNCTURES to roof membrane from sharp grit etc being tramped over
and inconvenience and cost of fixing leaks and internal damage
AVOIDS SLIPS around hatch, stairway etc, access points and on greasy or ponded main roof surfaces