The best conditions for curing asphalt include high daytime temperatures and nighttime temperatures that are temperate; however, even if these conditions are present, asphalt needs to cure, which means it needs time to dry out completely, cool and harden. According to Petrapaving.com, it can take an entire year for asphalt to completely cure/harden.
Resist sealing your new asphalt surface. The asphalt needs at least a full three months to cure. Sealing your asphalt driveway prematurely locks in oils, which makes it eternally vulnerable to tire tracks and other marks.
Stick a toothpick into the crack of the asphalt. If it comes out wet and black, the asphalt is not fully cured.
Look for stone aggregate pieces. This is the best time to seal the asphalt.
Apply a high-quality, coal-tar sealer to the asphalt.
Let the sealer cure for four to 12 hours. Touch the sealer with a gloved hand. If there is black on the glove, check again later. When the sealer is dry, apply a second coat of sealer. Repeat every three to five years.