During the recently-concluded winter, wise property owners almost certainly made sure to seal their doors and windows to prevent drafts from coming in. Sealing them in also prevented the heat produced by heating systems from escaping the property. Sealants in parking lots have a different function but they are just as essential.
Like windows, sealants in asphalt pavements are often needed to seal in cracks or gaps. However, even without obvious signs of cracks or gaps, seal coating is still necessary as it provides the asphalt pavement an additional layer of protection from factors like excessive heat or moisture and heavy traffic that typically lead to advanced deterioration or wear and tear.
Seal coating also helps asphalt pavement achieve a smooth texture that allows parking lot operators to easily have the structures cleaned and maintained since dirt and debris can easily be swept off them. Seal coating also prevents these surfaces from bearing the brunt of oil or gas spills. Penetration of these elements causes the asphalt to soften and break down.
Before sealant is applied to parking lot surfaces, the surfaces must be cleaned of any traces of dirt, oil, sand, or grease residues. Doing so will allow the sealant to adhere properly upon application. In cases of extremely rough surfaces, contractors can add clean silica sand to the sealants.