Whats the difference between a cut and patch and an infrared repair?
Both procedures are designed to repair failed areas of asphalt. The end product is essentially the same. However, cut and patch is employed when the damage has penetrated to the limestone base and little or no asphalt remains in the damaged area. Infrared is used when the damage does not go to the base, when there is sufficient asphalt remaining in the damaged area to be repaired. With cut and patch the damaged area is literally cut out (usually a foot wider on every side than the visible damage) with a saw. It is rebased, i.e. new limestone is added, new asphalt is applied and it is rolled to grade. Infrared heats the existing asphalt to 350 F. The asphalt in the repair area is scarified to depth, i.e. it is heated to the thickness of the asphalt. Rejuvenator is added to the existing asphalt, new asphalt is added and the area is rolled to grade. The difference between the two procedures is in the final product. A cut and patch leaves four cuts in the asphalt that must be crack sealed.
