It has been suggested that I should put another layer of asphalt on top. If current asphalt and whatever is under it is not hard enough to stand up to weight of car traffic, doesn't really seem like another layer of asphalt is what I need, but if I knew what I was talking about I wouldn't be here So, you've got a few choices:.
Tear it up and put in a new asphalt driveway, which will probably have the same problems. This will PROBABLY include digging up everything that is there -- the blacktop, crushed gravel, and all, re-tilling the soil with some additives to improve it's compressibility for your climate, and then re-laying everything Your problem is the ground under asphalt is not strong enough to sustain load.
If you put a new layer of asphalt over the existing driveway it will get the same rut very quickly. Asphalt is highly flexible and once the ground under asphalt sags asphalt sags too. The real solution would be to tear the driveway up and put proper ballast.
If there's any flexible earth beneath like fertile soil it should be removed and replaced with sand. Then you have to put crushed stone ballast and ram it thoroughly. Once you have rigid base you can put either concrete or asphalt. Also see this answer to a question about repairing concrete driveways.
Your existing asphalt is an excellent base for a second layer of asphalt. Not so good for macadam , chip and seal , and some other asphalt pavement substitutes. Assuming you do not have a serious problem like some peat deposits. In the past , asphalt concrete was promoted to governments as a base for cement concrete pavement. The higher price of oil has made this too costly. Tree roots can also crack a driveway as well as earth movement. In these situations, homeowners need to assess how serious the problem is and find the best way to fix it.
One possible solution to enhance a worn-out driveway is to apply an asphalt overlay but is this always the best solution? Asphalt overlay is an asphalt repair method in which a new layer of asphalt is applied over the existing pavement. Generally, the new layer is at least 1.
The existing layers are used as a base and a new layer of asphalt is applied to the surface. Even though the top layer of a driveway may have a worn and cracked appearance it may still have structural integrity beneath.
An overlay will last about years whereas a complete removal and replacement will last around 20 to 30 years. This can differ depending on climate, heavy usage, the condition of the current surface, and other factors. Some people prefer this method to the other option of removing and replacing their entire driveway because it can be more cost-effective.
In some situations, it may actually be a wiser decision to remove and replace rather than simply applying an overlay. The choice depends on the condition of the existing pavement. Making the wrong choice could lead to more costly repairs.
Moreover, paving over an old driveway will almost always results in unattractive or unimpressive results. Nevertheless, you can put a new asphalt driveway over an existing one.
This is just about the only way you can pave a driveway over another. I will explain why and how this is possible. Asphalt is a very strong and sturdy material. A properly installed asphalt driveway will not only look good but also last for many years. However, to continue looking new and amazing it must be regularly maintained. Nevertheless, even with proper maintenance, it will reach the end of its lifespan when you will feel it is much better to tear it down than to continue maintaining.
When such a point reaches, you can actually tear it down to install a brand new asphalt driveway. However, if you are on a budget, instead of tearing down your existing asphalt driveway, you can pave over it by using it as a base for a new asphalt driveway.
Paving a new asphalt driveway over an existing one is called asphalt overlay or resurfacing. The new layer often has to be at least 1. The existing driveway is typically used as a base for the new one. An asphalt overlay is possible when only the top layer of the existing driveway seems to be worn and its base is regarded to be in good shape.
If the base of the existing driveway is not in good shape then carrying out an asphalt overlay is not advisable. This is the most important thing to consider. Tearing down your existing highway to install a completely brand new one will cost you big money. However, while it is cheaper to resurface an existing asphalt driveway, it will still cost you plenty of money. An asphalt overlay is only recommended when the damage to the current driveway is only on the top layer.
For example, if the top layer exhibits potholes, cracks, and similar damage, doing an asphalt overlay is okay.
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