Cutting asphalt is always necessary for asphalt replacement and frequently required for asphalt repairs that involve cutting away deteriorating pieces of asphalt to fill potholes. When cutting asphalt to complete a repair job, you'll need to have the appropriate pavement cutting tool.
Asphalt requires a unique blade that is different than one you would use to cut other surfaces such as concrete, marble or granite. Because asphalt is softer, it requires a diamond blade with a hard bond. Other soft-bonded blades are not effective on asphalt pavement cutting.