Crack sealing is a crucial step in the sealcoating process, and its importance cannot be overstated. While sealcoating provides a protective layer on the surface of asphalt, crack sealing addresses a critical vulnerability that can lead to extensive damage if left unattended. Here's why crack sealing is essential during sealcoating:

1. Preventing Water Infiltration: Cracks in the asphalt act as pathways for water to seep into the pavement's subbase. Moisture penetration can weaken the structural integrity of the pavement and lead to more extensive and costly issues, such as potholes and base failure. Crack sealing effectively blocks water from infiltrating the asphalt, preserving its strength and durability.

2. Preventing Freeze-Thaw Damage: In regions with fluctuating temperatures, water that enters through cracks can freeze during cold weather, causing it to expand. When the ice melts, it contracts again, leading to further cracks or exacerbating existing ones. This freeze-thaw cycle can cause significant damage to the asphalt over time. By sealing cracks, this damaging cycle is interrupted, preventing further deterioration.

3. Preventing the Spread of Cracks: Cracks tend to propagate and widen over time, especially under the stress of vehicle traffic. By sealing cracks early, before they have a chance to spread, you can effectively halt their progression and prevent more extensive repairs down the road.

4. Enhancing the Longevity of Sealcoating: Sealcoating is designed to protect the surface of the asphalt, but if cracks are left untreated, the benefits of sealcoating can be compromised. Cracks provide openings for water and chemicals to reach the underlying pavement, undermining the effectiveness of the sealcoat. By sealing cracks before applying the sealcoat, you ensure that the protective layer can perform optimally.

5. Cost-Effective Maintenance: Crack sealing is a proactive and cost-effective maintenance measure. It helps prevent larger and more expensive repairs or complete asphalt replacement in the future. By addressing cracks early on, you can extend the life of your asphalt surface and save on long-term maintenance costs.

To achieve the best results, it's essential to use high-quality crack sealants and ensure proper application techniques. Professional contractors, like Four Season's Sealcoating in Southern NH and Northern Massachusetts, have the expertise and equipment to perform crack sealing effectively during the sealcoating process. By combining sealcoating with crack sealing, you can maximize the protection and longevity of your asphalt surfaces, saving you time and money in the long run.