Today we battled Mother Nature. We were doing modifications to a tar and gravel roof in Vancouver. Three new plumbing vent stacks and elimination of two old ones. We put down two layers of torch-on on the old holes and stripped in the new vents with two ply membrane also. Problem was the roof held water. We had to keep the vacuum fired up for the hole job keeping the water from seeping into our work area. Is summer gone already?