Do You Want To Give a Fresh Look To Your Parking Lot or Driveway? Normally, the thickness of the overlay lies between 1.5 and 2 inches. The amount of overlay is determined by the height of the existing surface. Paving The SurfaceĪfter the existing asphalt is prepared adequately, the construction team can carry out the process of adding the asphalt overlay on the top layer. The base of the surface is rebuilt using several lifts of asphalt and aggregate. It’s necessary to address all critical issues to ensure that problems won’t arise after a short time. You may need to replace the base of your asphalt surface if it has sunk in some regions or has large potholes. The material extracted in this process is transported to a recycling plant to convert it into new asphalt mix. If the old layer is not removed, the new asphalt may bond poorly with the damaged surface, making the pavement uneven.ĭepending on the extent of wear and tear, the milling machine extracts 1 to 3 inches of the upper layer by grinding it down. Asphalt MillingĪsphalt milling is the process of eliminating the upper layer of a surface that has significant raveling, cracks, or other forms of damage. Before introducing the overlay, the surface needs to be regraded so that water can run off easily. Significant flaws such as root damage, grooves on the surface, and enormous potholes can only be repaired if the entire structure is torn apart.Īny asphalt structures that have poor drainage make it difficult to install asphalt overlay. If widespread damage has affected the structure of the pavement, some measures will have to be taken before applying the overlay. Assessment of the Existing AsphaltĪn overlay can only be applied if the existing asphalt meets certain criteria. What Are The Basic Steps Followed When Applying Overlays? 1.
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