Permeable Pavers

Description

Porous or permeable pavers are designed with large voids that temporarily store stormwater, allowing runoff to infiltrate the soil below. Permeable pavement, when properly maintained, usually has a significantly longer lifespan than conventional asphalt because it is less prone to frost heave. Permeating hard surfaces on your property can be accomplished using a variety of methods including the following:

Block Pavers

Block pavers are concrete blocks designed with gaps between them filled with small stone or sand. The gaps compose approximately 10% of the surface area, and allow stormwater to infiltrate into the reservoir below.

Permeable Pavers

Permeable pavers involve interlocking concrete paving blocks connected by sand or gravel. The concrete blocks prevent the sand or gravel from washing away, which is an advantage over plain crushed rock.

Grass Pavers

Grass pavers are reinforced, vegetated surfaces supported by a durable plastic or concrete grid structure. The grid provides root protection, support for vehicle and pedestrian traffic, and prevents compaction of the vegetated area. This method is best suited for low-traffic or pedestrian areas with a variety of designs available.

Paving Strips

Paving strips are strips composed of concrete or cement, embedded into a green area where vehicles can drive. This technique can be accomplished by digging shallow trenches and filling with cement or concrete, or by aligning a series of paving blocks.

Pervious Concrete and Porous Asphalt

Pervious concrete and porous asphalt involve pavement mixes that contain aggregate with the majority of the fine material removed, providing a typical void space of over 30%. These voids allow stormwater to percolate into a bed of crushed gravel below, and then seep slowly into surrounding soil. The pouring and setting procedures differ from impervious materials; however, they are typically used in the same situations.

See the difference in porosity, from our demonstration site in Moncton:

 

LOCATION CHECKLIST

CONSTRUCTION GUIDANCE

It is recommended to hire a professional with permeable paving experience for larger jobs such as driveways.

MAINTENANCE TIPS

Maintenance guidelines must be strictly followed to prevent clogging of the system. Mitigation techniques include the following:

Wave