Driveways made of asphalt can last over a decade as it is a low-maintenance, resilient and durable material. The overall process of asphalt paving is not very complicated, but it does require heavy equipment for installation, which homeowners do not possess.
Although you cannot install asphalt yourself, you can certainly understand the process to keep an eye on your hired contractors to ensure that they complete the project properly. Steps involved in this process are:
- Hire a contractor
You should do some research, ask around and gather people’s reviews before finalising your contractor. It is good to discuss your paving project with more than one contractors before hiring one. Check the details of contract and make sure it has everything penned down.
- Removal of the existing driveway surface
Break the existing concrete and remove the pieces. You might also have to collect the loose gravel.
- Grading the driveway slope
To attain proper drainage and mitigate the risk of a collapsing heaved driveway, make sure that the surface is well graded, so that it allows the water to drift to the sides. Check the top of your driveway by running some water with a hose.
- Make base soil compact
Twin drum roller weighing 3,0000 pounds is a state of the art machinery for making the soil as well as other surfaces compact.
- Covering the base soil with crushed rocks
Using the right crushed rock is important to ensure proper drainage. The rock composition should be jagged and coarse. For clay-based soil, use 8 inches of crushed rock and for sandy soil, use just 4 inches of crushed rock.
Make sure to pack the crushed rock well into the subsoil.
- Settlement Time
Give the base a week’s time to settle down. A number contractors tend to skip this step when they have a time limit to complete the project. But, a settled base tends to be stronger in the long run.
- Choosing asphalt of right thickness and size
The aggregate size used in asphalt pavements ranges between 1.27 cm to 1.9 cm. Residential driveways have a smaller aggregate to gain a smooth appearance. Larger aggregate means stronger pavement.
- Compacting the asphalt surface
Once done with the process, compact the asphalt surface with a heavy roller.
It is very important to properly treat the edges of your driveway. The edges should be formed at a 45 degree angle.
After you finish the construction use a sealant during the first nine months of installation. In case your driveway is flat, it is a good idea to build a slight hill in center to let the water drift to the sides. For heavy trucks, always use larger aggregate at the bottom and smaller aggregate to top it off.