5 Steps For Asphalt Parking Lot Crack Repair

Asphalt cracks can lead to more extensive damage in a parking lot over time, as they will continue to widen and worsen if they aren't properly repaired. Fortunately, most cracks can be fixed without the need for a full parking lot replacement. 

1. Cleaning

No repair can begin unless the cracks are cleaned out. A paving service will use one or more methods to complete this. For a very narrow crack, it may only be necessary to brush the area hard with a stiff brush so any debris is dislodged. Larger cracks may require weed removal or pressure washing to get all of the debris out of the crack. 

2. Expansion Fills

Large cracks often develop in areas where stress causes pavement to spread apart, either from traffic driving over the area or due to thermal expansion and ground shift. The repair crew will put foam or rubber rods into the crack, tamping them down and into place. These rods provide some elasticity once the crack is filled, which will help prevent a new crack from forming as a result of expansion at the site. 

3. Patching

The next step is to fill the crack with a patch material. Most asphalt crack patching compounds are a combination of asphalt mixed with a flexible polymer. The patch material is forced into the crack, no matter how small the crack may be. If an expansion fill was used, it will be completely covered by the patching compound. Cracks are overfilled, and then the excess is scraped away and leveled so that the parking lot surface remains smooth.

4. Sealant Application

After the patching compound cures a sealant is applied over the top. The purpose of the sealant is twofold: it prevents the patch compound from peeling up and degrading, and it also slows weathering damage from UV light and moisture exposure. This extends the useful life of the patch so that the patch doesn't fail and the crack doesn't reopen. 

5. Sealcoating

Sealcoating is not always completed after patching a crack, but it is recommended if there were several patches put in or if it has been more than a couple of years since your parking lot was last sealcoated. A sealcoat consists of a mix of asphalt and sealants. It's painted over the lot paving to create a water- and weather-resistant surface. An additional benefit is that the sealcoat mix also covers minor color variations, so the crack patches won't be as obvious once the sealcoating cures. 

Contact a commercial paving service if you need your parking lot asphalt to be repaired. 

About Me

Construction: Work That Matters

Construction workers and contractors do not always get the "thanks" they deserve. But we all depend on these workers more than we realize. The floor underneath your feet was made and supported by contractors. As you drive to work, the road that passes beneath you was built by a construction team. They may not wear flashy badges or the prettiest uniforms, but construction workers do some really important, meaningful work. Our world would be completely different without them. We can't even imagine what it would look like! To do our part and honor construction workers, we have started this blog. We hope you do your part and read it.


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