March 17, 20179 yr Had a few quotes for geotextile membrane to go under type 1 mot and wondered what the difference in them is as they price has varied. I understand I need non woven as it's non permeable, but the price has varied from £1 m2 to £110 for a 100 x 4.5m roll which is 27p m2
March 17, 20179 yr I paid £155 for a 4.5 x100m roll of MD100 . Was the cheapest non woven I could get delivered up here.
March 17, 20179 yr you may want to look at Horticultural suppliers as they use the membranes too. Not sure if they'll be cheaper or more expensive though.
March 18, 20179 yr Your near Midlands aren't you? EH Smith do 2 good ones. The black one is around 100 quid. Supposed to be non permable but I've noticed water pool on it. White one is better but closer to 200 quid. I've used both before Wait till you start talking to groundworks people. They reckon there's about 500 different specs.
March 18, 20179 yr 2 hours ago, Oz07 said: Supposed to be non permable but I've noticed water pool on it. Have I got this wrong??. I thought non permeable didn't allow water (and others) to pass through, so surely water would pool on it.
March 18, 20179 yr I have 800 sq m of the woven black stuff that was under our menage probably throwing it out
March 18, 20179 yr OK, now I know I'm on the correct tack I will ask this question of Vijay, and the answer may be simple but I'm just too thick to see it. What would be the reason to use a non permeable membrane under MOT1, surely this will just hold water. I would have thought you would need a permeable membrane to contain the MOT1 but let liquids pass through. Edit Just had a thought. is it to stop water from rising into the MOT1 and not the way my mind is working??? Edited March 18, 20179 yr by RichS
March 18, 20179 yr Author Hi Rich, I'll be having a drain at the front of the drive so I'd want to water running down into it. If I was making the drive permeable, I would use type 3 to allow the water to drain through to the ground. But I think I'm correct in saying that won't really happen in clay like I have, hence the run off and drain
March 18, 20179 yr Author 9 hours ago, dogman said: I have 800 sq m of the woven black stuff that was under our menage probably throwing it out Where abouts are you?
March 19, 20179 yr 18 hours ago, Vijay said: Hi Rich, I'll be having a drain at the front of the drive so I'd want to water running down into it. If I was making the drive permeable, I would use type 3 to allow the water to drain through to the ground. But I think I'm correct in saying that won't really happen in clay like I have, hence the run off and drain Hi Vijay, Thanks for the answer. Must admit I never gave clay a thought and now it makes sense. Very sandy where I am so water just disappears
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