|
Use half-inch rebar, not mesh. I'd probably go 6 inches wide on the concrete on the sides of the channel. You may be able to use your existing blade, depending on how thick and how old the asphalt is. I would try it first, before I'd go buy another blade. You definitely want to make sure that you saw in a straight line. You may or may not want to use expansion joints between the existing and the new, it somewhat depends on what kind of shape they are in. You might also give some thought to how your property is graded, most houses are put onto lots that are not properly graded so that you have positive drainage away from the house all the way around it.
|