Sawing and sealing is done with self-propelled saws for the purpose of forming a joint in the concrete or asphalt and sealed with either hot rubberized asphalt, silicon, and pre-formed rubber joint material. Sawing includes the sawing of green concrete to provide a controlled joint for the concrete to crack, then the green joint is widened and sealed with any material required. Most applications are green sawing and sealing of concrete building pads, roadways, airport slabs and runways. Asphalt sawing and sealing is done where asphalt applied over existing concrete roads. The cuts are made over the old concrete joints, both longitudinal, and transverse joints along with shoulder joints. The cuts are made to control where the asphalt cracks. The saw cut joints are then sealed with a hot, rubberized asphalt joint material to deep water from getting into the cracks, freezing and then cracking the asphalt.
Sawing and sealing of the joints adds three to six years into the life of the asphalt. Walker Cutting Services uses a patented dry cutting system that cuts the joints dry with no dust getting air borne and can be sealed the same day creating a much better joint system than sawing wet one day, and sealing the next leaving the joints open to dirt, debris and more water over night.