Both asphalt millings and hot mix asphalt have their unique pros and cons. It’s important to understand these differences to determine the best choice for your project.

1. Asphalt Millings

   Asphalt millings are the recycled asphalt material obtained from old roads that are being repaved. They are an environmentally friendly and cost-effective method of paving.

   Pros:

   • Cost-effective: Asphalt millings are less expensive than new asphalt.
   • Environmentally friendly: Using millings reduces the demand for new asphalt, which is good for the environment.
   • Durable: Millings can be compacted just like new asphalt, making it resistant to wear and tear.
   • Low maintenance: Once compacted, millings harden and require little maintenance.

   Cons:

   • Not as smooth: Asphalt millings don’t give as smooth a finish as new asphalt.
   • Weather susceptibility: In cold climates, millings may not compact as easily or may loosen over time.
   • Limited lifespan: Millings don’t last as long as new asphalt.
2. Hot Mix Asphalt

   Hot mix asphalt is a combination of approximately 95% stone, sand, or gravel bound together by asphalt cement, a product of crude oil. This mix is heated and laid down on the surface to be paved.

   Pros:

   • Smooth finish: Asphalt provides a very smooth, clean finish that’s ideal for driveways, roads, and parking lots.
   • Long-lasting: When properly maintained, asphalt surfaces can last 20 years or more.
   • Versatility: Asphalt can be formulated to withstand various loads, weather conditions, and high volumes of traffic.

   Cons:

   • Cost: Asphalt is more expensive than asphalt millings.
   • Maintenance: Over time, asphalt may require more maintenance such as sealing and filling cracks.
   • Not eco-friendly: Production of new asphalt involves extracting and refining petroleum, which contributes to environmental pollution.

Choosing between the two options depends on your specific project needs, budget, and environmental considerations.