The concept of infrared repair in layman’s terms is the process of heating up a repair area using infrared wavelengths to a temperature of 350˚F in order to rake, lute, and compact the repair area leaving a seamless and thermally bonded transition between the repair area and the surrounding asphalt.
Click Here for a Step by Step Infrared Guide
Infrared repair takes 1/3 the time and costs of saw cut R &R. In addition to the time and costs savings infrared repair creates a thermal bond between the new and existing asphalt drastically reducing the chance of water penetrating into the repair and causing future issues.
Standard heating times will be 7-10 minutes for an inch to 1 ½” of penetration. Heating time will be dependent on how clean the repair area is, the age of the asphalt, and the outside ambient temperature. After the area is heated up, the rest of the repair should only take about 10-12 minutes. So a good rule to go by is an infrared repair in total will take 15-20 minutes.
Infrared repair is intended to be an alternative repair method to saw cut remove and replace, so anywhere you are currently doing saw cut R & R you can use infrared. Potholes, spider web cracking, oil spots, birdbaths, drainage covers, utility cuts, the list goes on and on.
Although infrared repair can be used in 99% of asphalt repair applications there are some instances where infrared may not be the best solution. Using infrared repair to repair an entire asphalt driveway is probably not the most economical solution and you will leave the driveway looking very “spotty”. Another instance where infrared repair can be used but may not be a permanent solution is when there is a sub base failure.
If you are using a true infrared heater, then NO. KM International infrared heaters are equipped with heat cycling technology which cycles the heating times to ensure you are not burning the top layer of asphalt. If you are using a unit that does not cycle heat or using a unit that is “blue flame technology” then you do in fact run the risk of burning the top layer of asphalt.
The price will differ regionally but we will generalize some numbers to give you a starting point. Generally speaking, you should start around $200 per heat. Based on the market you are in you can raise or lower the prices.
In addition to the infrared machine you will need an asphalt rake, lute, shovel, plate compactor, rejuvenator. In most cases you will need to have to add 4-5 of fresh asphalt, so having an asphalt hotbox to keep your asphalt hot is essential.
If you are running an infrared unit on back to back heats all morning you will most likely need to replace the propane tanks at about the midway point in the day. If you are doing intermittent heats you may be able to get a full days use out of the propane cylinders. Since KM international infrareds units are equipped with heat cycling technology you will use less propane than competitor’s units.
As asphalt ages it begins to oxidize and loses some of the chemical properties that makes it asphalt. Rejuvenator is a liquid that replaces the moltenes and volatiles that the asphalt has lost due to oxidization. A rejuvenating agent is applied through a chapin sprayer and KM recommends spraying a heavy mist paying special attention to the outside edges. Spraying a rejuvenating agent will help prevent future raveling of the repair.