| Quick Summary Asphalt millings are a cost-effective, durable, and eco-friendly alternative to new asphalt for many paving projects. They offer long-term performance while reducing waste and material costs. Who This Is For This is for homeowners, businesses, and property managers considering an affordable paving option for driveways, parking lots, access roads, or other asphalt projects. Key Takeaways Asphalt millings provide strong durability, lower costs, and environmental benefits, but proper base preparation and compaction are essential for best results. They are not ideal for every project, but they perform well where strength and value matter most. |
Asphalt millings, created through asphalt pavement milling (also known as pavement milling), involve removing the top layer of an existing asphalt pavement using a specialized milling machine. The material is ground into small particles, creating crushed remnants that can be reused as recycled asphalt millings for future asphalt paving projects.
This milling process is commonly used in roadway rehabilitation, resurfacing, and other asphalt projects. It allows contractors to repair damaged pavement, correct drainage, and restore surface integrity without replacing the entire base. As a result, projects generate less landfill waste, use fewer new materials, and have a lower overall environmental impact.
For certain asphalt paving projects, asphalt millings provide a cost-effective alternative to fresh asphalt, delivering durability and functionality without the higher cost of hot-mix asphalt or new asphalt.
Benefits of Recycled Asphalt Millings
Recycled asphalt millings are a versatile, eco-friendly option among modern paving materials. They are widely used for driveways, roads, parking lots, commercial asphalt parking lots, access roads, and resurfaced pavement areas.
Compared to traditional gravel and other paving materials, asphalt millings create a harder, more stable paved surface. They are durable construction materials that resist rutting, cracking, potholes, and erosion under heavy traffic and harsh weather conditions.
Asphalt millings perform especially well in cold climates. They compact tightly, allowing snow and ice to melt faster, reducing plow damage and improving winter safety. For homeowners and businesses alike, this makes asphalt millings an attractive option for long-term performance.
Using recycled material also conserves scarce natural resources, lowers demand for raw aggregates, and reduces construction waste, key environmental benefits.
Cost-Effective Solution
One of the main reasons contractors recommend asphalt millings is their cost-effectiveness. Asphalt millings are significantly cheaper than hot asphalt, hot mix, or fresh asphalt.
On average, millings cost $10–$20 per ton, compared to $40–$80 per ton for hot mix asphalt. This lower cost makes them an affordable option for homeowners and businesses looking to save money without sacrificing durability.
For large asphalt paving projects, this difference can save thousands over the long run while still delivering a strong, functional surface.
Enhanced Durability of Recycled Asphalt
When installed with proper compaction, asphalt millings bind together as the remaining asphalt cement hardens through oxidation. This strengthens the surface over time, increasing enhanced durability and longevity.
Compared to gravel or dirt, asphalt millings form a smoother, more uniform surface that resists dust, erosion, and washouts. With routine maintenance, millings can last 10–20 years or more, making them a durable option for both residential and commercial asphalt parking lot applications.
However, in extreme summer heat, millings may soften slightly. This is why correct installation depth, grading, and compaction are essential.
Working With Asphalt Millings
Preparing the Base
Preparing the base is crucial to ensure long-term performance. The area should be cleared of vegetation, debris, dirt, and unstable material. In many cases, geotextile fabric is installed to improve drainage and prevent contamination. It is also known for maintaining base integrity.
A well-prepared base reduces settlement and prevents water damage, extending the lifespan of the surface.
Spreading and Compacting
Asphalt millings are typically spread in a 3–4 inch layer. Contractors then grade the surface for proper slope and drainage.
Compaction is achieved using a plate compactor or vibratory roller. Multiple passes are required to achieve strength and surface uniformity. Without proper compaction, millings may scatter, generate dust, or form ruts.
Top Layer Considerations
Some projects apply a sealant or rejuvenator to the top layer to improve appearance and protect against moisture. Unlike concrete or some other paving materials, asphalt millings usually require less upkeep over time.
Drawbacks of Using Asphalt Millings
Despite their benefits, asphalt millings are not suitable for every project.
Material quality can vary depending on the source. Some loads may contain rocks, dirt, or other contaminants if not properly screened. Aesthetically, millings do not provide the smooth, black finish of new asphalt.
Availability can also depend on regional demand and current roadway milling schedules. Additionally, they may not be ideal for high-speed roadways or areas requiring a perfectly smooth surface.
Environmental Considerations
Reusing asphalt millings reduces waste, lowers emissions, and conserves raw materials. These benefits make asphalt millings an eco-friendly option for sustainable paving.
Projects using recycled asphalt may qualify for LEED credits, contribute to LEED certification, or support LEED projects seeking to reduce environmental impact. Some municipalities and businesses may also qualify for tax credits or incentives.
Project Planning and Execution
Every successful paving project begins with careful planning. Factors such as traffic load, drainage, climate, base conditions, and intended use all influence whether asphalt millings are the right choice.
Working with experienced contractors ensures proper equipment, correct installation, and long-term performance. If you’re deciding on materials for your next project, professional guidance can help you avoid costly mistakes.
Milling Process Overview
The milling process removes damaged pavement while preserving the base. Traffic can stir loose millings before compaction, so proper timing and equipment use are essential.
This approach allows surfaces to be resurfaced efficiently while reducing material costs and environmental strain.
Thinking about using asphalt millings for your next project?
Rocky Mountain Striping can help you decide if recycled asphalt millings are the right solution for your property, budget, and performance needs. Contact us today for expert guidance and a free project estimate.
