How To Prep Your Asphalt For A Protective Sealcoating

Construction & Contractors Blog

Keeping your asphalt maintained and protected is important to keep your paved surface lasting as long as possible. As asphalt ages, it drives out and oxidizes from the sun, air, and weather and must be protected to prevent its deterioration. Sealcoating your asphalt every few years fills in small cracks that form on its surface, makes it waterproof, and restores its dark color. But before you apply a sealcoating layer, here are some steps you need to take.

Clean and Repair Cracks

If any cracks have formed in your asphalt pavement, there is a good chance vegetation and weeds have begun growing from the cracks. Remove any vegetation growing from the cracks with the edge of a shovel or garden trowel. For vegetation growing from thin cracks, you can use the edge of a screwdriver to dig them out. 

It is also recommended to clean out any rocks, dirt, and chunks of asphalt from cracks and holes you will be filling. Scrape or dig them from the cracks. Leaving any debris behind on the surface of your pavement will prevent the sealcoating from adhering properly.

Now you can fill any large-sized cracks with some cold mix asphalt repair, which you can find bagged at most home improvement stores. Scoop the repair mixture into the cracks or holes and tamp the material into the hole with a hand tamp, compressing it together. Smaller cracks don't need to be filled, as the sealcoating will flow into the holes during application, filling them.

Clean and Remove Oils

When you use your asphalt pavement for parking your vehicles, it is likely that you will have an occasional oil spot drip on your asphalt. Oil left on your asphalt surface will break down the emulsion and cause it to deteriorate. Over time, the asphalt will become pitted and indented where the oil spot was.

It is important to clean up oil spills as they occur, so you can protect your asphalt. But you should always clean oil stains from the asphalt before applying a sealcoating, as the oil will prevent the sealcoating from adhering.

Use a degreaser cleaner, water, and a scrub brush to clean oil spots from the surface, then rinse them with clean water from your garden hose. If any oil spots have settled down into the asphalt surface, you will need to burn the oil from the asphalt with a propane torch. Be careful to not burn or melt the asphalt. Follow this up with rinsing clean the entire surface with a pressure washer or garden hose with a nozzle attachment to remove debris and dirt from the asphalt. To find out more, speak with a business like Southwest Slurry Seal, Inc.


22 March 2017

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