In response to customer preferences, Porous Pave has refined the standard size of recycled rubber chips used in its surfacing. Rather than 1/4- to 3/8-inch pieces making up the material, chips now range from 1/8 to 1/4 inch fine-cut rubber, creating a porous, durable, and flexible pour-in-place permeable paving material.

"We saw the need for a smoother finish based on comments and suggestions from landscape architects, hardscape contractors, homeowners, and facility managers," says Porous Pave president Dave Ouwinga. "We have worked with rubber-aggregate permeable surfacing for more than a decade. When our testing verified that smaller, 1/8- to 1/4-inch rubber chips would not compromise our high standards for porosity and permeability, we adopted the fine-cut chip as our new standard."

Porous Pave uses discarded tires as raw material, diverting them from landfills. The company says the finer rubber chips create a material with 27% porosity, which retains 93% of the porosity and permeability of the previous version of the material with larger chips. Porous Pave and its distributors will continue to supply the larger chips for extensions of existing installations, and for new projects with a minimum size of 5,000 square feet where a coarser, higher traction finish is preferred.

Two versions of Porous Pave are available. Porous Pave XL offers a 50/50 blend of rubber chips and aggregate for pour-in-place thicknesses of 1 to 2 inches over a compacted aggregate base. Ideal for courtyards, patios, walkways, and other foot-traffic installations, the material drains storm water directly through its surface, filtering down to the aggregate base and into the soil below.

Alternatively, Porous Pave XLS has a 100% recycled rubber chip content and offers more impact absorption, making it ideal for pool surrounds and playground areas, as well as rooftop patios and pavement borders on green roofs.