When water falls on your parking lot or driveway, where does it go? And what kind of water damage is your pavement suffering in the way? Ok, so it’s not the kind of question likely to keep you up at night, but when deterioration and/or damage to your surface affect the proper drainage your pavement was intended to receive, it becomes an issue that should be addressed.
What about all that water?
Standing water is not only a safety hazard for drivers, bicyclists, and pedestrians but is also one of the most damaging elements to your pavement. The solution? a little thing called slope. Properly paved surfaces are typically designed to have a minimum of a 1 percent gradient. This allows water to travel via flow lines to lower elevation areas such as curbs, dry wells, and retention areas. This type of drainage diverts moisture away from the paved surface.
Water, along with oxygen and UV rays, damages the chemical bonds that give pavements their strength. When these bonds break apart, the pavement becomes brittle and small fractures in the surface become vulnerable to moisture, debris, and vehicle force. As the deterioration worsens, larger cracks appear, which allow the foundation to become susceptible to the damaging effects of water as well.
Whether the source of water is natural (rain) or man-made (irrigation, sprinklers, etc.), preventing water from pooling on your asphalt surface reduces its deteriorating effects and limits the amount of moisture saturation to underlying layers.
Watch for trouble areas presenting Staining.
Obviously, when water is present, it is easier to see those areas where pooling or poor drainage is occurring. Though trouble areas can be more difficult to spot during dry conditions, there are some telltale signs to look for. Dirt stains, standing debris, or areas of significant concentrated cracking, i.e., “alligatoring,” should trigger the need for further evaluation by a professional estimator. Also, if water is not properly getting to a concrete valley gutter or curb, deterioration will be evident where the asphalt and concrete adjoin.
Go With The Flow
You don’t have to break the bank to correct all drainage issues. Minor repairs such as asphalt skin patching can alleviate depressed surface areas and restore proper flow.
Let us help you determine whether your parking lot or roadway has appropriate drainage. Otherwise, you might be sending your money (and your surface) down the drain.
Contact Hill Country Sealcoat for a free quote today.