Sealcoating
 

The asphalt seal coating material used is an emulsion that helps protect the asphalt pavement from moisture, harmful UV rays, grease, oil and other harmful agents. Asphalt sealcoating enhances the appearance of asphalt paving surfaces and adds longevity to the life of the asphalt pavement. South Texas Paving uses an agitating mixer with a diaphram pump to apply the Sealer.  The material agitating machine has an inner propeller mixing thicker material and allowing it to stay proportional so it may be pumped without clumping or clogging. The diaphram pump is a special pump for thicker liquids that is capable of pumping heavy sealer with sand at an adequate pressure to ensure a quality thickness. The finished product is considered airport quality and has a life span of a of 5 years.  
 

 

Other less concentrated amounts are also available in life spans of 2.5 yrs which also needs to be agitated and 1yr, which is most common and does not require agitation. 1yr sealer can be pumped with a regular water pump due to its dilution.  Most companies that apply sealer do so with a regular water pump.

Asphalt Repair & Patching

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Patching is a common asphalt repair on areas of pavement with potholes. Potholes occur when water sits in an area for longer than 24 hours when it begins to seep into the caliche making it soft. When a vehicle drives over this soft area the asphalts gives or pumps up and down. This causes cracks and eventually deteriorates asphalt altogether creating a pothole. This same effect can be caused by sprinklers watering the asphalt daily.  
This is why South Texas Paving adjusts sprinklers after we pave a new or repaired area. It is then the customers job to keep them in check, because we do not cover daily sprinkler water damage in the warranty.

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Asphalt Repair Procedure

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This process consists of filling the affected areas with hot asphalt mix.  For a longer lasting result affected areas may be sawcut, removed and replaced at the correct grade.  This method may be more expensive, however, coupled with a heavy sealcoat it can be a permanent fix.