Is It Better To Remove A Concrete Driveway Before Laying Asphalt?

When considering replacing your driveway in Myrtle Beach, SC, it’s essential to evaluate the existing materials and the best approach for a durable and long-lasting surface. A common question homeowners face is whether to remove an old concrete driveway before laying new asphalt. While it might seem convenient to overlay asphalt on concrete, this method can lead to several issues over time. This article explores the reasons why removing a concrete driveway before installing asphalt is the optimal choice.

Answering The Question: Is It Better To Remove A Concrete Driveway Before Laying Asphalt?

Understanding Sub-Base Differences

The foundation, or sub-base, plays a crucial role in the longevity and performance of any driveway. Concrete and asphalt driveways require different sub-base preparations:​

• Concrete Driveways: Typically, concrete is poured over a minimally prepared base. The strength of concrete allows it to span minor imperfections in the underlying soil without significant issues. Contractors often rely on the thickness and rigidity of the concrete slab itself for stability, which means the sub-base may not be thoroughly compacted or stabilized. 
• Asphalt Driveways: In contrast, asphalt is a flexible material that requires a well-prepared and stable sub-base to prevent shifting, settling, and cracking. A properly compacted sub-base ensures that the asphalt can flex under load without damage, providing a smooth and durable surface. ​

Overlaying asphalt on an existing concrete driveway means relying on a sub-base that wasn’t designed for asphalt’s flexibility requirements, leading to potential issues.

Potential Issues with Asphalt Over Concrete

Several problems can arise when asphalt is laid directly over concrete:​

1. Expansion Joints: Concrete driveways are constructed with expansion joints to accommodate temperature-induced expansion and contraction. These joints can transfer through the asphalt layer, leading to reflective cracking, which compromises the driveway’s appearance and integrity.

2. Unstable Sub-Base: Since concrete sub-bases may not be adequately compacted, they can shift or settle over time. This movement can cause the overlying asphalt to crack or develop depressions, resulting in costly repairs. ​

3. Reduced Longevity: Asphalt driveways installed over concrete are more susceptible to premature deterioration due to the underlying issues, leading to a shorter lifespan and increased maintenance costs. 

Benefits of Removing Concrete Before Asphalt Installation

Removing the existing concrete driveway before installing asphalt offers several advantages:​

• Proper Sub-Base Preparation: Excavating the old concrete allows for the installation of a suitable sub-base tailored for asphalt. This preparation ensures stability, proper drainage, and longevity of the new driveway.

• Enhanced Durability: A well-prepared sub-base minimizes the risk of shifting and settling, reducing the likelihood of cracks and other surface imperfections in the asphalt. ​

• Cost-Effectiveness: While removing concrete adds to the initial project cost, it can save money in the long run by reducing the need for frequent repairs and extending the driveway’s lifespan.

Environmental Considerations

In Myrtle Beach, SC, and beyond, environmental responsibility is a growing concern. Removing and recycling old concrete contributes to sustainability efforts:​

• Recycling Concrete: The removed concrete can be crushed and reused as aggregate for new construction projects, reducing waste and the demand for new materials.

• Improved Drainage: A properly prepared sub-base with recycled materials can enhance drainage, reducing runoff and potential erosion issues on your property.​

Local Climate Considerations

Myrtle Beach’s coastal climate presents specific challenges for driveway materials:​

• Temperature Fluctuations: The region experiences mild winters and hot, humid summers. Asphalt’s flexibility allows it to expand and contract with temperature changes, reducing the risk of cracks compared to concrete.​

• Moisture Levels: High humidity and occasional heavy rainfall necessitate proper drainage. An asphalt driveway with a well-prepared sub-base ensures efficient water runoff, preventing water-related damage.​
  

Professional Assessment and Installation

Before deciding to overlay asphalt on an existing concrete driveway, it’s essential to consult with a professional paving contractor:​

• Site Evaluation: A thorough assessment of the current driveway’s condition, sub-base stability, and drainage patterns helps determine the best course of action.​

• Customized Solutions: Professionals can design a driveway plan that considers local soil conditions, climate factors, and your specific needs, ensuring optimal performance and durability.​

Contact Asphalt Today for Asphalt Paving Services in Myrtle Beach, SC

At Asphalt Today, we understand the unique paving needs of Myrtle Beach residents. Our team of experienced professionals is dedicated to providing high-quality asphalt paving services tailored to your property’s requirements.​ Don’t compromise on the longevity and appearance of your driveway by overlaying asphalt on an unsuitable concrete base. Trust Asphalt Today to remove your old concrete driveway and install a durable asphalt surface designed to withstand Myrtle Beach’s climate and enhance your property’s curb appeal.​ Contact us today for a comprehensive consultation and discover how our expert services can transform your driveway into a long-lasting, aesthetically pleasing asset.​ Call Asphalt Today or visit our website to schedule an appointment. Let us provide you with the exceptional asphalt paving solutions that Myrtle Beach residents trust and recommend.