The method of applying a protective coat to asphalt pavements, known as sealcoating, is impacted by temperature and various other weather conditions. Therefore, deciding when the best time is to complete a seal coating project requires a clear understanding of how factors such as cloud cover, wind, sunlight, humidity, and temperature play a role in the drying and curing process of asphalt sealant.
To provide customers with a long-lasting, high-quality finished product, sealcoating contractors assess the weather when approaching a sealcoating project. It's an expensive mistake to sealcoat in less-than-perfect weather conditions that can cost money and time.
Weather conditions help determine how fast sealcoat material dries and cures and how well the sealant adheres to the pavement. Ideal weather conditions ensure successful sealcoating, and sealcoating professionals consider precipitation, sunlight, temperature, and humidity before starting a sealcoating project. In addition, understanding how pavement surface temperature affects the outcome makes it easier for you to plan a sealcoating project and ensure the best results possible.
The best time of year for sealcoating differs from place to place because of two main factors, rainfall and temperature. The best time to sealcoat pavement is when temperatures are hot (70 degrees and up), it is sunny, and there is low humidity. Having all of these conditions combine perfectly when you need your asphalt sealed can be challenging, but finding a day that meets sunny and dry conditions will increase your chances of proper curing and drying.
Sealcoating professionals evaluate the days a customer hopes to have their sealcoating project completed and weather conditions to schedule a time for the project with the highest odds of the longest-lasting protection. For example, if the weather forecast expects rain within 24 hours of sealcoat application, or if rain fell the night before the project, most professionals will not try to sealcoat a surface because water prevents proper drying.
The optimal temperature range for sealcoating in Dallas, Fort Worth, TX, is between 55 and 90 degrees Fahrenheit. The ideal temperature range starts around 70 degrees Fahrenheit in the morning and increases throughout the day. The surface and air temperature can be no colder than 55 degrees Fahrenheit to avert increased dry time and avoid affecting the performance of the finished sealant. Air must be no colder than 55 degrees Fahrenheit within 24 hours of applying the sealcoat material. In most cases, warmer weather is ideal regarding the drying time for sealcoating.
In most locations in the United States, the answer to this question is no. It would be best not to sealcoat asphalt in the winter. Some exceptions exist as southern states can sometimes maintain higher temperatures during the winter months.
It is too cold to spread a sealcoat if the temperature is below 50 degrees Fahrenheit. The finished product experiences separating and peeling if low temperatures plunge to freezing or below while the coating dries because the moisture in the sealcoating material freezes.
Humid conditions impact the integrity of sealant, just like freezing weather. Temperatures above 95 degrees bake the sealcoat before it adequately adheres to the paving. In addition, the binder employed in most sealcoating can soften at temperatures exceeding 100 degrees Fahrenheit. To avoid issues, always choose a professional sealcoating contractor with the experience to know how to handle sealcoating in Dallas, Fort Worth, TX.