Different types of geotextile membrane. What to use for what application?
In a nutshell woven black membrane is used for under sub-bases to reinforce the ground and offer some stabilisation.
White fleece membrane is used for above your sub base of compacted stone and is there to serve a verity of purposes including:
Weed Prevention – stopping anything growing from below and ruining the finished job
Stabilisation – keeping the ground stable
Separation – stopping the finished material (gravel, blocks, chippings) mixing with the sub-base stone.
If in doubt the white fleece generally covers both applications and is very much a multi purpose fleece membrane. Brands include terram, nw8, bonar and many more. They are all pretty much the same you just need to choose a weight of fabric to suit your needs. We find 100 GSM covers 99% of applications.
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