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Poor Parking Lot Drainage: Signs Of Damage & Solutions

You do not want your parking lot to suffer from drainage issues. Drainage issues are not only unsightly, but they can also ruin the integrity of your parking lot, which is why you are going to want to ensure you handle and manage them properly.

Signs of Poor Drainage

To start with, it is essential to know what signs of poor drainage look like in your parking lot.

The first sign of poor drainage is pooling water. Pooling water isn't only annoying to walk and drive through; it is also dangerous to your asphalt. Asphalt is a material that is designed to be slightly porous, so when water is pooling and sitting on the asphalt, it will seep below the surface of the asphalt. Then, if it freezes, the water will expand inside the asphalt, resulting in damage to the surface, leading to cracks and potholes. Then, the cracks and potholes allow even more water into the asphalt, which can further damage it, and even get down and damage the base material of your parking lot, causing significantly more damage.

Second, another sink of poor drainage is sinking asphalt. If you notice that your parking lot is sinking into the ground and isn't as high or as level as it used to be, that is because water has washed out the base materials that support your parking lot. Eventually, cracks may develop in the top of the asphalt as it continues to sink.

Third, you may experience crumbling along the edges of potholes as the water damage progresses. This can also occur along the edge of the parking lot, especially if it did not abut curbing.

Ways to Handle Poor Drainage

The good news is if you have poor drainage, you can take action before you experience the worse consequences of that poor drainage, such as crumbing edges, sinking pavement, and potholes. As soon as you notice water pooling, call your asphalt company. There are multiple interventions they can implement before having to replace your parking lot.

First, they can install shoulder drains along the edges of our parking lots. A shoulder drain is like a modified storm drain. It is a lower trough that runs along the curbing that borders your parking lot. The shoulder drain is designed to route the water into a nearby municipal storm drain or catchment basin.

Second, they can add a catchment basin to your parking lot. A catch basin is essentially a larger drain that is designed to be situated in a low-lying area in your parking lot. It is usually installed right in the path of where water moves off a building or structure to keep it from pooling up in the parking lot.

Third, you can add drain trenches. Drain trenches are in place to help direct water away from the parking lot and go around the edge of the parking lot.

Fourth, your parking lot can be sloped to facilitate the water flowing into the shoulder drains, catchment basins, or drain trenches. These are all services that are offered by asphalt paving companies to improve the drainage of your parking lot.

If your parking lot is experiencing signs of poor drainage, you will want to put in a call to an asphalt paving service. They can install shoulder drains, add drain trenches, and add catch basins, all of which will improve your water drainage issues and protect your parking lot from damage.