A hot pour crack filler is the best way to fill cracks in asphalt. This type of product is designed for damages up to 1” wide and will provide a durable seal that can withstand extreme weather conditions. For optimal results, the hot pour crack filler should be heated and stirred before application when temperatures are between 50-90 degrees Fahrenheit. The material must also be mixed well before use, ensuring an even spread throughout the treated area. Once applied, it needs time to dry completely before any traffic, or other activity takes place on top of it.