Much has been made of the ecological impact of driveways and newer, more ecologically sound materials that are coming on the market. Focus has also been brought to bear on driveways in front gardens and their impact on raising temperatures and worsening floods in urban areas. This is covered in other articles on this site, so here we will be looking at recycled materials.
Different Aspects of Ecological Impact
When it comes to the ecological impact of driveways there are a number of different aspects to cover. Some aspects are going to be the same regardless of the materials used. For example, there will always be the Excavation And Digging to provide a secure foundation, so the use of any mechanical diggers and trucks will result in largely the same ecological impact whatever materials are going to be laid down.
Finding Local Recycled Materials
For hardcore to go into the foundations it is obviously better to use rubble from another building project rather than buying bagged aggregate, but not many of us have a handy source of rubble around at the right time. One answer to this is to keep an eye on freecycle and other sources of items that people want to get rid of, such as small ads and newsagents’ windows.
You could go around the neighbourhood in the lead up to your project and, if you see any other building work going on, offer to take any rubble away. They’ll be happy to see it gone without any effort on their part and, as long as you’ve got somewhere to keep it until you begin, it shouldn’t be too much trouble.
Surface Dressing Options
The same goes for the top dressing, although you may well want to buy new materials to get a particular look for your new driveway. If you are lucky, you may be able to get some good paving from a reclamation yard.
Although you’ll have to pay more than you would if scavenging it from somewhere, at least it will be delivered, which is a significant benefit when you’re talking about tons and tons of material. There are also a number of suppliers in the UK who specialise in recycled decorative aggregates, and a quick search on the internet will lead you to their websites.
If there’s isn’t a handy source of top dressing available at the time you are doing your project, you could consider using new surface dressing that’s made from recycled materials. Many of these are basically pebbles or gravel intended to be used either loose or in resin-based surfacing. There are a number of suppliers in the UK who specialise in recycled decorative aggregates and a quick search on the internet will get you to their websites.
Resin-Based Surfacing is slightly problematic from an ecological point of view because of the chemicals used in the manufacture of the resin, and it is also more expensive than tradition driveway methods.
Ecologically Aware New Products
Finally, there are a number of supposedly ecologically sensitive products being released by traditional manufacturers of stone and aggregate driveway products. As well as using recycled raw materials to create the products, they are being delivered on pallets made from recycled wood and with recycled plastic wrapping.
Hardcore eco-warriors would no doubt consider this ‘green-wash’. But if you have to buy new it would surely be better to buy a product such as this than to purchase completely new paving materials.