Sealcoating is the best protection for an asphalt parking lot. It provides an excellent defensive barrier from the sun, rain, traffic, and other elements. It can also add marketable value to the parking lot and joint property.
Proper sealing is a two coat operation that provides two different purposes:
- It is aesthetically pleasing to look at when completed because it turns everything black and looks like a brand new parking lot.
- It provides a barrier between the sun and the rain. Sealing protects the original asphalt oil so it doesn’t bake out. The oil is what makes it an asphalt road because otherwise it’s just gravel. It also provides a new wear surface from the effects of car traffic. It’s a sand slurry mixture and is either applied by squeegee or spray. It usually takes 24 hours to dry or cure. It prevents the asphalt from raveling, which is what happens when the oil bakes out of asphalt and releases the rock it holds on it.
If the pavement is not sealed, water will enter. Cracks admit water through the pumping action of traffic. Water lying on the roadway is pushed into the cracks when vehicles pass over.
*Eliminating the entrance of water eliminates the disintegrating of the subsurface materials.
Cracksealing is performed by the following methods:
- The cracks are blown out with 100 psi of compressed air. Debris such as dirt, weeds, and rocks are removed from the crack as to provide exposure to the side walls.
- The hot cracksealant, which is usually 400 degrees, is then placed in the crack so it adheres to the sidewalls of the crack as well as about a 3 inch span across the top of the crack. Rubberized asphalt is another name people use because it’s designed to stretch with the freeze thaw cycle of the asphalt.
- It usually cools within 15 minutes in normal temperatures.
- Cracksealing is what waterproofs the asphalt so that water can’t penetrate to the asphalt subbase which can freeze and then cause heaving.
Patching is performed when either one of the following happens:
- Cracks were not sealed, and water was allowed to penetrate and freeze.
- Poor construction causes soft spots in the asphalt and it subgrades.
We take care of all small potholes, driveways, and parking lots and specialize in pathways and trails.
Proper patching requires saw cutting around the hole in the asphalt. Usually straight square saw-cuts around the patch is best. The debris is then removed, and new asphalt is placed and compacted. Saw cutting makes for a cleaner, smoother edge for patches.
*Overlays are nice refreshment to older asphalt.
Situations where paving is required are as follows:
- There is new asphalt construction for new or remodeled parking lots.
- Large areas are torn out of the new asphalt, and a paver is used rather than patching equipment.
- Usually a minimum of 2 inches are laid, but it is usually closer to 2.5 to 3 inches. Sometimes we’ll even do 4 inches for heavily trafficked areas.
Stripes usually come in yellow or white, but any color can be used. It’s what delineates where people park. They are usually 18 feet long and 9 feet wide, but small variations can be found on many parking lots. By refreshing your striping, you will preserve your image to the public and save your parking lot.