Eco Friendly Green Driveways – A Living Permeable Driveway, Porous and Alive
Traditional Porous Green Driveway
flickr photo by ChrisB in SEA
I have always been a fan of permeable driveways (except in my younger skateboarding days). They allow for absorption of runoff, recharging aquifers, and naturally filters the water before it reaches ocean, lake and river outfalls, improving water quality. It reduces the dangers from flooding and the need for huge storm drains and channels. Additionally, it can help with the ‘heat island’ effect where the heat of the sun is stored in all of the concrete and asphalt of urban areas, thereby trapping the heat and altering the micro-climate of the area.
There are several methods out there from just using a permeable porous concrete type mix if you prefer a solid looking surface, to a brick style where water can run through the cracks, a basic gravel, or just go all the way and create a green live driveway of grass, turf or native plants. The really easy (and somewhat common) way to create a green driveway is to plant an area and provide a solid surface (such as bricks or concrete strips) for the tires only. No matter what style suits you, there is a greener driveway option out there. Professionals are out there who can help you plan and execute your eco friendly driveway, or you can just do it yourself (DIY). Lets start with the variations on what is available in the way of environmentally friendly driveways.
Porous pavement is a permeable pavement surface which contains a reservoir underneath. The reservoir holds the surface runoff, allowing it to slowly infiltrate into the subsoil. This allows the water to receive some natural filtration treatment. Porous pavement can mimic traditional asphalt or concrete but is manufactured without the fine, dense materials and incorporates hollow spaces that allow for water infiltration. This is not the greenest option, but is a great alternative to a traditional concrete or asphalt driveway. Because of many homeowner association rules and aesthetic considerations, this may be the best option for you.
A Green Driveway in Action
flickr photo by Scoobyfoo
To make it even better, you can make it a green driveway by adding grass or some type of low growing hearty foliage to help with the absorption of runoff and automobile leaks. There is a great tutorial of a DIY green driveway on frankejames.com where the homeowner actually did all the work themselves, and there are commercially available products from sources such as Invisable Structures. Most living driveways incorporate several layers, starting with a compacted sandy surface to maintain grade, followed by a sandy loam filled support structure (commonly a plastic honeycomb grid) to support the root system and maintain the solid surface to drive on.
Franke James DIY Green Driveway Project
If you own or know of companies with green driveways, please leave a comment below for our readers.
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8 Comments to Eco Friendly Green Driveways – A Living Permeable Driveway, Porous and Alive
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Has any family/individual done it in the area yet??
Hello! I love the first photo – what a nice use of old brick.
I’ve been working with people (home owners / landscapers)in Canada and the US to build green driveways using EcoGrid – which is 100% recycled plastic. It gets used a lot in LEED Certification. Its fantastic for parking pads: it looks like grass and stops mud and ruts. The Ecogrid is much less expensive than the concrete pavers (photo 2).
Porous asphalt is difficult and expensive to install. Repairing it can be very difficult.
[...] GREEN YOUR DRIVEWAY “Philadelphia has 80,963 driveways, totalling 84,500,000 sq ft, or 1,939 acres. Of these, 76,895 are residential, totalling 72,000,000 sq ft, or 1,652 acres (2% of city total).” They pour about 2 billion gallons of rainwater into storm sewers yearly. About half of that can carry raw sewage into our rivers. [thanks to Eric.Werfel at PWD] —There are already several pervious asphalt drives in Philly, such as Vanni subdivision (1125 Southampton Rd) and between 40th, Union, Fairmount, Aspen. And there are many more paved with staggered blocks, gravelled or grass-covered. See also: eco-friendly-green-driveways & green-options-for-your-driveway &nytimes.com/2006/05/04/garden & frankejames.com/debate [...]
What a great idea! This is such an easy, affordable tool that can help make our world a little bit more green. In japan, many places already do this. they set up their parking lots like this, with grass and brick patchwork.
Fiberglass grating is a similar product that comes in 4′x12′ sheets. Since it is glass fiber reinforced, it is much stronger than a standard plastic grid. It also comes with a grit surface that is molded into the top for slip resistance. We’ve done sidewalks like this, filling in the voids with pea gravel. 20 years later, it looks brand new.
[...] we could capture the water before it even enters the river. Either put in permeable driveways into every residence and street corner in L.A. or encourage people to set up their own water [...]
How does it do in the North where i have to snowplow my driveway to get out of my garage. I have the widest driveway on my pleasant street and I would like it to be aesthetically pleasing as well as taking care of the run off but people tell me I can’t do it.
Any examples?
Margaret,
From what I have heard, they do great in colder, snowy climates since the roots are protected within the honeycomb structure below ground. It would depend on the way you clear the snow from the driveway. The fiberglass or plastic honeycomb works great for shovels or light impact snow clearing devices. If it will contact or bang up against the driveway, you may want to use the concrete systems to prevent wear. I would consult one of the green driveway contractors for their recommendations- they would be the best to know.