
In most cases they are more expensive. People want more than plain concrete in front of their house. Special mixing techniques are necessary to make the cement pervious throughout. There are also various techniques that must be employed to make concrete.
Particularly if they are rendered decorative, the process involved in making special cement that will actually drain water through its mass can represent a greater investment for the homeowner. This is certainly worth the money if you are having a large paved surface constructed.
Is there a difference in how much water different types of permeable pavers for driveways can effectively drain?
That depends on the size of the hardscape, and, to a certain extent, on the size of the yard. If the paved area is rather small, and the front yard itself much smaller than the back, an interlocking design will do quite well to prevent storm water overflow into the yard.
A very large parking area in a big yard is a different matter. Its flat surface can shed an enormous amount of water onto both your plants and onto the street. Not only can you lose plant life this way, but you can have problems with erosion appear soon after a few months of heavy rain. The interlocking style of permeable pavers for driveway may not shed water as quickly as is necessary in this instance.
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