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Asphalt is subject to deterioration over time, the leading causes for asphalt problems are water and sun light. Water can soften the grade under the asphalt which leads to cracks, those cracks eventually lead to  potholes and alligated areas. Sun light rays also deteriorate asphalt over time due to oxidization, it  eventually makes the asphalt become brittle and crumble. Crack sealing and sealcoating are the best ways to prevent deterioration and further damage to  pavements. Crack sealing will seal the cracks in the asphalt which will keep water intrusion from causing  the cracks to spread, sealcoating is applied on top of the crack sealer and the surrounding pavement to  prevent sun light from oxidizing the asphalt and car traffic deterioration as well. Sealcoating will not only create a protective barrier on the asphalt but also give the asphalt a newer  looking appearance. Keys to successful sealcoating are preparation and execution, the asphalt surface  must be clean and rid of any vegetation and the sealcoating must be applied correctly for it to hold up on  pavements successfully. At Northwest Asphalt Maintenance we are confident very few if any company's  spend the time we do on the preparation of sealcoating, which is the crucial factor in any sealcoating  project.
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