Why does asphalt fail? There are many reasons for failure, but the main reason is
because water has penetrated the base or sub-base area. When water does this, base
material shifting can occur causing the asphalt to crack. Over time this can and
will lead to larger cracks and the erosion of material. When the asphalt has reached
this point, the only option is to remove and replace. This is done by saw-cutting
or milling of the asphalt and removing all loose material. Then apply a tack coat
which helps the new asphalt adhere to the existing surface. New asphalt should be
installed at a minimum 1” depth and compacted with a vibratory plate or roller.