Geotex Membrane for Driveways & Paved Areas
It is commonplace for a geotextile membrane to be used in domestic driveways and car parking areas.Some dispute whether best practice is for the geotex to be laid between the paving bedding and sub-base, or sub-base and sub-grade. In our experience, both can be effective depending on the type of installation at hand. For example, when using porous paving, or when there is no sub-grade, the membrane naturally goes under the bedding. However, in all other circumstances we have found that prevention of the sub-base migrating down is key, achieved by laying the geotex membrane above the sub-grade.
The ideal geotex membrane to use in footpaths and driveways is a non-woven. Few contractors would specify woven since it does not provide reliable separation of layers (bedding/sub-base or sub-base/sub-grade) due to the nature of its design. A non-woven fleece however, excels with its impressive filtration and separation properties.
This applies to all paving projects; driveways, patios, footpaths and similar.
For a cost effective solution one should consider the Multitrack NW8, most likely in half (2.25 x 100m) or quarter (1.125 x 100m) rolls. In domestic scenarios a 100gsm geotex membrane isn’t always required and in fact the lighter duty 80gsm NW6 may be preferred. The only potential issue here is that the NW6 can only be supplied as a complete 4.5m x 100m roll, although this is ideal if future projects are likely.