Asphalt is a durable building material, but it is no match for mother nature. As soon as you lay down your driveway, it begins its battle with the elements. The sun's UV rays will strip the liquid right out of your driveway, and once all the liquid are gone, your driveway will start cracking. UV damage is only one of the dangers that your asphalt has to contend with. If you want to get as much life as possible from your driveway, you need to apply a sealcoat.
Resisting UV Damage
Asphalt tar should be flexible because even though your driveway looks and feels solid, it needs to be able to flex with changes in temperature and with the weight of the vehicles that drive on it. You know your driveway is losing liquid because it will start to fade from deep black to dull grey. A seal coat can help because it will absorb the sun's rays before they have a chance to damage your driveway.
Resisting Frost Wedging
Water poses a second threat to your driveway in that as water settles into the crevices in your driveway and then freezes, it will expand and push apart the pebbles that make up your driveway. This process is known as frost wedging, and it is responsible for carving rocks off of mountains and canyons. It is more than capable of creating a maze of cracks in your driveway. A seal coat waterproofs your driveway so that water runs off of your driveway without creating cracks.
If your car leaks gas or oil onto your driveway, the solvents in these liquids can dissolve the asphalt tar in your driveway. This will cause the pebbles in the driveway to separate and create potholes. A good sealcoat will keep solvents on the surface to preserve the integrity of your driveway.
A seal coat is typically made from coal tar, so no matter how faded your driveway is, it will give your driveway a like-new, deep black color. While you can paint sealcoat onto your driveway, you can save yourself a lot of hassle and ensure that you get a quality job by hiring professionals. While sealcoating might seem like an extra cost, sealcoating is a lot cheaper than paying to repair cracks or, in the worse case scenario, replacing your entire driveway. If you want to save yourself from the cost of replacing your driveway, you should pay to have your driveway sealcoated. For more information, talk to a professional like Pavement Solutions Inc paving.