Permeable pavers are vital tools for designing outdoor living spaces. They offer stormwater management by minimizing the volume and rate of runoff water, filtering pollutants as well as keeping water on site even if there is no retention pond.
Permeable pavers are also known as permeable interlocking concrete pavement (PICP). They were first used in commercial settings but gradually become an important outdoor design option for homes. This has to do with the willingness of homeowners to embrace eco-friendly alternatives. Read on to know more about PICP.
PICP Works as a System
Permeable pavers work with different sizes and layers of crushed stone. And it becomes quite essential for installers to have proper training since installing wrong components beneath the pavers or filling the joints with stone dust or sand may not give the desired results. Plus, a lot of municipalities today require certification for bidding on commercial jobs.
Importance of Proper Installation
Installing permeable pavers differ from conventional pavers in many ways. First, the thickness of these pavers is 3 1/8 inches while non-permeable pavers are thinner, often about 2 3/8 inches.
In order to identify the soil type, test digs must be done. This can also aid in design specifications. Often, installation of permeable pavers begins by putting geotextile at the excavated area’s bottom. The next layers will be composed of a layer of stone sub-base, a 4-inch layer of open-graded base and a 2-inch thick layer of bedding course. The pavers are placed on top of all these layers.
Durability of Permeable Pavers
Permeable pavers are used in various applications and climates. Their average comprehensive compressive strength is 8,000 psi. Compared with other surfaces, permeable pavement involves no cracking and peeling. Also, they have tolerance to freeze-thaw cycles.
Installing PICP initially costs the same as installing concrete. But it is up to three times high than conventional pavers or asphalt. The costs will be higher if the work includes hauling stone in long distances.
But, the real saving comes as there is no need to build a retention pond. Also, you do not have to replace or seal as often as other surfaces. And because individual pavers can be replaced or removed, repairs are quite straightforward. Maintaining these pavers is simple. It is just necessary to vacuum commercial surfaces once every year to prevent debris from clogging the joints. When used for residential applications, the joints can be cleared out with a leaf blower.