CRACK SEALING

Crack Sealing Is An Essential Part Of Both

Preventative Maintenance & Asphalt Repair

When cracks start to appear in your driveway or parking lot, they need to be Sealed quickly or cracks can lead to larger and more costly repairs. The good news is that Crack Sealing is an inexpensive repair that can be performed year round. By Sealing Cracks early on, you are effectively extending the lifespan of the Pavement by preventing additional water erosion that seeps into the Asphalt. Lastly, Crack Sealing helps owners or property managers buy time between the more costly repairs that are needed.

THE IMPORTANCE OF CRACK SEALING

  • Cracks let in water, which causes the Pavement base to become unstable and deteriorate.

  • When water gets into the pavement subgrade, during winter months or other extremely cold periods, it freezes, expands and causes pavement to crack and worsen.

  • When cracks are identified and filled while they are small, it keeps them from turning into bigger problems such as potholes or permanent pavement damage requiring restoration.

  • Cracks left unfilled will definitely grow in size, causing pavement to prematurely fail.

  • Cracks can come from many other sources as well. Earth movement, heavy traffic loads, or poor construction design and repairs. The main type of cracks found in parking lots include fatigue cracks, reflective cracks, and block cracks.

HOT-POUR CRACK SEAL APPLIED THEN TOPPED WITH A LAYER OF ASPHALT SEALER
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HOT-POUR VS COLD-POUR CRACK SEALANT

Not all crack repair products are the same. Hot-pour crack sealants are considered by many to be superior to cold-pour sealants. We at Heritage Asphalt Paving believe that to be true based on our experiences as well.

  • Hot-pour sealants are designed for cracks up to 3/4” (three quarters of an inch) typically found in parking lots. Larger cracks up to 1” (one inch) can still be sealed by this method to avoid more expensive future asphalt repairs, however, the products typically aren't designed to stand up to these types of larger cracks and voids. In those cases we would recommend asphalt patching.

  • Hot-pour sealants start out as a solid that is melted at the site until it is liquid. It is then applied hot and allowed to cool for a few minutes before applying an asphalt sealer.

  • Hot-pour sealants dry to a spongy, flexible solid. This pliability allows cracks to expand or contract as the ground freezes and thaws.

  • Hot-pour sealants bond tightly to the asphalt to which they are applied. Shrinkage is minimal.

  • Hot-pour sealants are preferred by the majority of municipalities, commercial property owners and federal and state transportation agencies.

  • Hot-pour sealants can be used under virtually any weather conditions that permit asphalt to be worked safely.

We do offer cold-pour sealants for smaller projects, but customers should keep in mind that they are very limited in their abilities, and we only recommend them on very small asphalt repair projects that make hot-pour crack repairs cost prohibitive.​​

  • Cold-pour sealants are delivered as liquids and applied straight from the package without heating. Since they are liquids, they have to cure before asphalt sealer can be applied.

  • Cold-pour sealants dry to a hard, inflexible solid. They lack the pliability to expand or contract with changing temperatures. Frequently, this lack of flexibility results in the failure of the repair as the plug can be ejected when the surrounding ground freezes.

  • Cold-pour sealants have a higher shrinkage rate than hot-pour sealants. As they have a weaker bond to the asphalt, even a little shrinkage can cause the plug to disconnect from the asphalt.

  • Cold-pour sealants are normally reserved for emergency asphalt repairs that are intended as a stop-gap or temporary measure.

  • Cold-pour sealants cannot be used when the temperature falls below a certain point as the colder temperatures will not allow the moisture in the sealant to evaporate properly.

Hot-pour sealants are the best choice for quality, long lasting asphalt crack repairs. Parking lots, driveways and roadways that are crack sealed using a hot applied rubberized crack sealant can be reopened to traffic as soon as the material is cool. Depending on outside temperatures, this can be as fast as 15 to 20 minutes after sealing the cracks. The more time the crack seal material is given to dry, the better odds lifting will not occur. We recommend 48 hours of dry time.

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