PERMEABLE CLAY BRICK PAVERS
INSIDE THE FLOODPLAIN| OUTSIDE THE FLOODPLAIN

What Is It?

Cost: $10.00-$12.00 per sq ft.
Applications: Parking lots, pathways, sidewalks, plazas, driveways, public spaces. Can be used in high weight but low volume/speed roads (industrial or residential).
Service Life: 20-40 years.

Permeable clay brick pavers are very similar to permeable interlocking concrete pavers (PICPs). With the exception of the construction material (clay brick vs concrete), brick and concrete pavers share many technical specifications, maintenance needs, and applications. Relative to interlocking concrete pavers, permeable clay brick pavers have wider joints between bricks that allow for water infiltration. These open-graded aggregate-filled joints can allow for theoretical permeability of hundreds of inches per hour. In practice, infiltration rates will depend on the permeability of the subgrade soil. Replacement of aggregate fill should occur as needed. Periodic vacuuming will help maintain infiltration rates, and frequency should be determined by exposure to sediments (e.g. pavers not frequently exposed to mud and winter sanding may not need to be vacuumed for many years). Like PICPs, permeable clay brick pavers have very high load bearing strength and can be used in industrial applications, with the exception of areas that handle hazardous materials.

Benefits

  • Enhances groundwater infiltration while reducing stormwater runoff volume, rate, and pollutants.
  • Bricks can reduce urban heat island through increased reflectivity and evaporative cooling.
  • Colors and shapes help preserve urban aesthetic.
  • Very high load-bearing strength.
  • Easy to repair – units can be easily removed and reset.
  • Reduces occurrence of black ice/freezing puddles in cold climates; requires fewer applied deicers.
  • Reduces road noise.

Drawbacks

  • Pollutants and deicing salts can infiltrate groundwater. Should not be installed in areas where hazardous material spills are possible
  • More expensive than other permeable pavements. Higher installation costs.

Regulatory Impacts and Requirements

A summary of potential regulatory touchpoints follows below.
Permeable-Interlocking-Clay-Pavers

Financing Options, Incentives, And Rebates

Additional Resources

PROJECT EXAMPLES

SAMPLE OF SUPPLIERS

SOURCES

Photo credit: User Werewombat on Wikimedia Commons