![]() By filling surface voids, sealcoating also reduces the depth to which oil or gas can penetrate the pavement. Asphalt sealers, which normally would be soluble in gas or water, usually include additives that enable them to resist such leaks. Coal tar sealers aren’t soluble in gas or oil so they prevent damage caused by leaks or spills. Gasoline or oil will soften asphalt concrete. This is especially important on driveways/parking lots where cars are often parked or worked on. Regularly applied sealcoats prevent ulraviolet rays from penetrating the pavement. They break down the links between carbon bonds in the asphalt, causing the pavement to crumble. These rays from the sun also cause the pavement to deteriorate. Sealcoating protects the surface and fills surface voids, reducing the pavement’s exposure to oxygen and water, and extending pavement life. ![]() The cracks enable oxygen and rainwater to penetrate the pavement, often into the subbase, weakening it and reducing pavement strength. This hardening results in a brittle surface that will eventually crack. As the pavement is exposed to oxygen, the asphalt binder (tar) hardens. Preceded by effective crack repair, sealcoating applied every two or three years can significantly extend the life of your driveway/parking lot for minimal cost.Īsphalt pavement begins to deteriorate almost as soon as it’s placed. Without aggregate, a sealed asphalt surface can be slick. ![]() He can also include aggregate in his sealcoat, which will make the sealer last longer and assure an abrasive surface for car and foot traffic. ![]() He knows the proper techniques to prepare the pavement and apply sealer, he owns and knows how to use the necessary tools, and he also uses a top-quality professional sealing product. ![]()
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