Green Driveway Paving
Many driveways are oversized to provide extra room for backing and turning and parking for occasional guests. Excess pavement often overwhelms a small lot and increases storm water runoff. On a recent project I used blacktop pavement for the high traffic area with Turfstone ™, a green pervious paving alternative around the perimeter for extra swing room when turning and extra off-street parking.
Turfstone ™ is an open cell concrete paving block you infill with crushed stone, gravel or topsoil. I opted for topsoil fill so lawn can grow between the concrete matrix virtually hiding the drivable surface.
Like any paving system, the bulk of the work laying Turfstone ™ blocks is in the prep. The 3 inch deep pavers can be laid over regular earth or special water receptor material. A solid well graded base is essential for the large (24 in. x 16 in.) format blocks. You can split the blocks along pre-scored lines but sometimes they’ll crack where you don’t want. It’s more precise to cut kerfs with a diamond blade and it only takes an extra minute.
Turfstone™ pavers go down fast. I set about 500 square feet in a few hours including carting the blocks from the pallets 100+ feet away. They cost about $2.50 / sq ft and are molded at licensed plants throughout the US. You’ll find them at masonry, landscape and building material suppliers. http://www.belgard.biz/shapes-turfstone.htm
Turfstone ™ isn’t the only porous pavement system. There are other concrete and plastic products available that serve the same function so keep your eyes out for locally made and stocked products.