What is the lifespan of geotextile membranes?http:

Foul and surface water, private drains and public sewers, land drains and soakaways, filter drains and any other ways of getting rid of water.
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greentown
Posts: 14
Joined: Wed Sep 23, 2015 1:14 pm
Location: east Kent

Post: # 106881Post greentown

I'm having a gravel driveway put down and have settled on having a Polystorm Soakaway heavy duty Crate system underneath:
http://www.plasticdrainage.co.uk/polysto....te.html

As per the instructions, the plastic crates will be sealed inside a Geotextile membrane:
http://www.plasticdrainage.co.uk/non-wov....ng.html

The gravel drive will be constructed in the usual way over the crates - so there will be
crate bedded in sand, wrapped in membrane then layers of sand - hardcore - sand - gravel - (I think that's the order).

Anyway, I just wondered, given that the plastic soakaway crates are full of holes, and the only barrier between the holes and void in the crates is the membrane - how long would it be before the system eventually fails and sand etc statrs to penetrate the membrane?

I've seen figures online of Geotextile lifespans of between 20 and 100 years - which is most accurate?

I think the contractor involved will use Terram - is this a good membrane?

All thoughts appreciated.

lutonlagerlout
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Location: bedfordshire

Post: # 106891Post lutonlagerlout

terram is good
in practise the geotextiles should last a life time at least
we have never had any fail on us in the last 10 years of using them
LLL
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greentown
Posts: 14
Joined: Wed Sep 23, 2015 1:14 pm
Location: east Kent

Post: # 106895Post greentown

Thanks - that's good to know.

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