Sealcoating not only beautifies your investment in your asphalt pavement, but sealcoating also more than doubles the life of the pavement. You must sealcoat to protect the asphalt from ultraviolet light, water penetration and chemical attack. If the asphalt is left untreated and never sealcoated the oxidation of the pavement will begin which causes the asphalt to dry and become brittle and this leads to the erosion of the top layer and the appearance of larger stones and small cracks on the surface. Sealcoating per manufacturer's instructions costs substantially less than the amount of dollars spent to repair or replace damaged asphalt. As mentioned above, sealcoating also beautifies your asphalt pavement.