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Permeable pavers and their installation process qualify for LEED certification

October 29, 2010

StormPave and RainPave are permeable pavers that look similar to pavers that have been a part of its product line for decades. StormPave is an English Edge®-style paver, which is designed for institutional and commercial projects where impervious surface restrictions apply and joint openings need to meet Americans With Disability Act restrictions (a gap of less than 1/2″).

StormPave permeable clay pavers.

RainPave is a Rumbled® paver (meaning that it’s been mechanically distressed so that it looks older than it is) that is designed for residential driveways. RainPave allows you to reduce your property’s impervious surface footprint to meet local stormwater requirements, while at the same time allowing you to open the way for a larger house footprint.

RainPave permeable pavers.

While conventional and permeable pavers pavers look similar, they’re not the same. The gaps, or voids, between the pavers are slightly greater, but the main difference is what’s underneath. Conventional paver installations use crusher run gravel and sand, while permeable pavers use open-graded aggregates without fine particles. A #2 stone is used as a subbase, then, a finer grade of #57 stone is used as the base, followed by a bedding layer of #8 or 89 aggregate which is smaller again in size. The latter is also swept into the joints.

This series of aggregates allows the water to flow as good bacteria builds around the rock over time and aids in reducing some pollutants. Permeable pavers in a “best practice” installation design can qualify for the LEED® Credit 6 Sustainable SiteStormwater Design.

Additionally, permeable pavements laid with Pine Hall Brick’s lighter colored pavers (red, rose, buff) can help qualify for the Sustainable Sites Credit 7.1 Heat Island Effect: NonRoof in LEED. The Rose color’s composition is made of 53% recycled material which helps in qualifying for Materials & Resources Credit 4 Recycled Content in LEED. And because clay brick is produced in 38 out of 50 states, it is normally transported no more than 175 miles from where it is made to a job site, according to the Brick Industry Association.

Transportation costs are therefore relatively efficient, which can help qualify a particular project, which uses brick products, for LEED certification credit under Credit 5 Regional Materials: Extracted, Processed, Manufactured Regionally.

The designers who were hired to upgrade a downtown plaza in Haddonfield, New Jersey turned to both conventional and permeable pavers by Pine Hall Brick and Traditional Building magazine wrote about it. Here’s how it turned out.

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