Before you lay asphalt on top of concrete, you must make sure that the concrete underneath is sound and stable. If there are any issues with the concrete, they could ruin the new asphalt that will be laid on top. You can avoid this by ensuring the concrete base is strong and level. Here are some tips to prepare concrete for asphalt. Make sure to use a concrete jackhammer for the process. You can also check out videos that demonstrate the process.
Paving asphalt over concrete is possible
When it comes to asphalt, you’re probably wondering how you can lay asphalt over concrete. Although it’s possible, the process requires some preparation. Concrete surfaces aren’t compacted, so they can shift. Moreover, repeated freeze-thaw cycles can cause these joints to widen. In addition, the asphalt layer will be affected by the movement of the concrete base, causing cracks and gaps.
While concrete can make for an excellent base, asphalt requires a firm foundation to stay in place and look its best. However, it will not last very long without a stable base, which may require frequent repairs. Therefore, it’s best to remove the existing concrete before laying asphalt. You can even use a mixture of concrete and asphalt to save money, but the result will be a drab-looking parking lot.
While it’s possible to lay asphalt over a concrete foundation, this method isn’t recommended. While concrete is durable and strong, the subbase is usually not prepared as well as an asphalt one. Moreover, if the concrete surface is sunken, the asphalt layer won’t last long and will need repairs more frequently. However, concrete-topped asphalt has advantages too. If you’ve spent the time and money to prepare the subbase, you can still lay asphalt over it.
It is a risky practice
Laying asphalt over concrete is a risky practice because it is more prone to crack. It also provides a less stable surface than asphalt laid directly over it. Cracked concrete will most likely cause cracks in the asphalt. Concrete expands and contracts because of changes in weather. This is why it is important to pay attention to the type of concrete used when laying asphalt over it. The following are some common problems with asphalt laid over concrete.
One of the biggest issues with asphalt over concrete is that it is more difficult to maintain. Depending on the conditions of the concrete, asphalt may crack or even become uneven, which will increase your maintenance costs. In the long run, laying asphalt over concrete may save money, but it will only be temporary. Paving a new surface over a concrete road is better and more efficient. If you can avoid putting asphalt over concrete, you’ll have a smooth surface that is safe for pedestrians and vehicles.
It requires a stable base
There are a few things to consider when putting asphalt over a concrete foundation. Putting asphalt on a sunken surface is risky, and the foundation must be in excellent condition. In addition, laying asphalt over a sunken surface will decrease the lifespan of the new surface. A properly compacted subbase is crucial for the longevity of asphalt over concrete. However, even if the concrete base is good, the asphalt isn’t as durable as a solid asphalt base.
Another important issue to consider is whether or not the concrete base is stable. If the base is unstable, the asphalt will shift and pivot over time. Because asphalt has a thin layer, an unstable base will cause the asphalt overlay to sag. A solid concrete base is essential for a stable asphalt overlay, but it’s easy to overlook this. In order to avoid these problems, professional paving contractors install thicker concrete slabs.
It isn’t tedious
Although you may have heard that paving asphalt over concrete can be difficult, it’s actually not a tedious process. To ensure that the asphalt adheres to the concrete, construction workers power-wash it first. The concrete base will provide a strong and stable foundation. Next, construction workers mix polymeric sand with water to create a durable layer. Polymeric sand also inhibits the growth of weeds and prevents insect infestations.
Putting asphalt over concrete is a viable option for homeowners who want a cheaper alternative to paving over concrete. Asphalt is a cheaper alternative, and it is not as hard on the wallet. However, there are some conditions in which paving over concrete can be dangerous. If the concrete slab isn’t stable, the asphalt overlay can be damaged. Therefore, before you lay asphalt over concrete, make sure the foundation is strong enough and there are no cracks or expansion joints.