sentence: There are two roofers standing top of a building roof removing working on old roof removal. sentence:  They are using roofing shovel to remove the shingles and tarp. sentence:  One of the roofers is peeling off the tarp from the rooftop as he digs in the shovel underneath the tarp. sentence:  The other roofer is helping him roll up the tarp as he peels it off.