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Industry Professionals Say

"Permeable interlocking concrete pavements are a logical choice for effective stormwater management. High quality interlocking concrete pavers provide a hard and durable surface not subject to surface abrasion and raveling while effectively transferring surface water to the underlying open graded aggregate which provides storage and filtering capabilities."

- David Hein, P.Eng.

VP of Transportation, Applied Research Associates, Inc., Toronto, ON

“Entering a parking lot should be the beginning of a pleasant experience when you arrive at a site and/or building. Parking lots should be ‘parking gardens’ with trees, other vegetation, color, texture and variety. Besides creating a sustainable drainage system that supports plants, permeable interlocking concrete pavement improves the character of parking area, thereby supporting the parking garden idea.”

- Jay Womack, ASLA, LEED® AP,

Director of Sustainable Design with Wight & Company-Darien, Illinois

What is permeable interlocking concrete pavement?

Tags: Municipal, Pedestrian, Permeable Pavement, Residential, Commercial, Industrial

Permeable interlocking concrete pavement (PICP) consists of manufactured concrete units that reduce Seattle WA PICPstormwater runoff volume, rate, and pollutants. The impervious units are designed with small openings that create permeable joints. The openings typically comprise 5% to 15% of the paver surface area and are filled with highly permeable, small-sized aggregates. The joints allow stormwater to enter a crushed stone aggregate bedding layer and base that supports the pavers while providing storage and runoff treatment. PICPs are highly attractive, durable, easily repaired, require low maintenance, and can withstand heavy vehicle loads. The picture shows installed pavers in a Seattle, Washington residential neighborhood. PICP significantly reduces the total amount of impervious surface and runoff.

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