Permeable pavers offer a perfect solution to storm run-off problems. Find out why! Even in Southern California, where rain isn’t a regular occurrence, storm run-off can still be a problem. With a common cement or concrete driveway, rainwater rolls down onto the street and into the storm drain.
The rain carries with it things like grass, fertilizers, trash and other contaminates that go down into the drain. Storm run-off is a major cause of pollution in lakes and rivers, and some city municipalities even require that you use permeable pavers if you are building or replacing your driveway. So, what are permeable pavers? Permeable pavers allow water to seep through the stone and into the soil below. This creates a system with virtually no storm run-off, as the water is simply absorbed into the earth. The system contains larger gaps between the stones and creates a system that allows none of the water to run down into the street and the drains.
To install permeable pavers, the old driveway is first removed and the subsoil compacted. Next, a heavy fabric called a geotextile is placed over the subsoil and covered with a layer of rock. The fabric will keep the rock from going down into the soil. Permeable paver systems will have two layers of this rock, each one compacted thoroughly, and finally a layer of pea gravel placed over them. The pea gravel is leveled out and then the stones are set. Finally, one final layer of pea gravel is swept in between the joints of the stones. By installing permeable pavers, you can prevent unwanted run-off and combat storm polution, without losing any of the beauty and durability of paving stones.