If you have divots and potholes in your asphalt driveway, then you have the option of patching the asphalt instead of having the entire surface replace. Patching can be completed with either a hot or cold compound. While this is true, many DIY homeowners will choose to use cold compound materials simply because they are easier to use. The patching materials have a variety of benefits above and beyond ease of use. Keep reading to learn about a few:
They Are More Environmentally Friendly
Cold mix asphalt is an emulsified compound that is made from asphalt, water, and a soapy compound. This allows the bitumen in the product to remain viscous at room temperature. Many cold asphalt mixes are made from recycled asphalt, and this means that new petroleum is not needed to create the patching compound.
The material also does not require the addition of diesel or kerosene. Both of these fuels are mixed into hot asphalt materials and they burn off in the hot sun. This cures the asphalt and allows the patch to cure properly. Unfortunately, this creates a situation where the volatile organic compounds in the fuel create an ozone problem and this contributes to air pollution.
Cold patching materials cure quickly without having to release VOCs into the environment.
They Can Be Used In Cold Weather
You probably know that kerosene, diesel, and other petroleum products start to freeze when they get cold. Not only do they freeze, but they start to gel. This means that a waxy buildup starts to form. If you use a hot asphalt mix in the winter, this gelling creates a situation where the wax remains in the asphalt solution instead of burning off in the sun. The patch will then remain pliable all through the winter.
Since cold patch materials are not dependent on the weather or the sun, they can be used in the winter. This means that you can patch your driveway when the weather starts to turn cold or if a large pothole forms in November or December.
Before you place the cold patch compound, you will need to remove snow and ice. If you leave it behind, the water is likely to go through a thaw and freeze cycle and your new patch will be placed under undue stress. Use a shovel to remove the majority of the snow and then use a hair dryer to melt the ice away. Once the ice is removed, you can gauge the depth of the pothole and spread a bit of gravel if the indentations is a more than a few inches deep. Spread the cold patch compound and make sure to tamp it down with a tamper tool or a piece of plywood.
For more information on paving, check out a website like http://www.starpaving.com.