Methane gas

[Russell griffiths]

So a letter from BCO has flagged up the need for gas preventative measures 

so talking to bco I thought we where going to talk about a radon barrier

nope it’s methane they are concerned about, has anybody installed one 

or has anybody had a contamination survey carried out looking for methane 

 

cheers from peed of in Cirencester. 

[joe90]

Never heard of this one, quick google shows it can be a problem on land fill sites, Marsh land, large natural gas pipelines or over coal mines, which are you?.

[Vijay]

https://www.visqueen.com/products/gas-membranes/gas-barrier

[Russell griffiths]

We are the site of an old gravel extraction quarry 

after the gravel was extracted the area was back filled with the soil originally stripped off, the thoughts are if any vegetable matter or anything else was buried at the time it may rot down and give off methane. 

 

 

 

I am wondering if it would  be easier to just install a gas membrane instead of a standard dpm 

rather than have a survey done to tell me that I should probably install a gas proof membrane. 

[Vijay]

That sounds sensible as they'd probably tell you to anyway to cover themselves - one expense instead of 2

[ToughButterCup]

And, @Russell griffiths, what evidence have they given for suspecting methane? 

 

They cannot reasonably  expect you to do something about a gas which occurs almost everywhere naturally. I would want to know which thresholds they were applying in your case and the evidence base that they were using to justify their request to you.

Or are they just asking you to check for methane levels?

[Triassic]

Maybe the cheapest and safest option would be to install a gas proof membrane.

[joe90]

24 minutes ago, Triassic said:

Maybe the cheapest and safest option would be to install a gas proof membrane.

 

+1