Very easy to bring the level down (if you feel this is necessary; but that's a different story) by increasing the ventilation. What are the current ventilaltion arrangements for each room?Tom said:My test result have come and the levels are 320 Boquerels?? which is above the action level of 200. A few pamphlets came with the test results suggesting various remedies. Has anyone had similar problems and would like to share their experience so I can take a more educated judgment/action.
Normal BCO resolution in cases like this is to insist on suspended floors with underfloor vents I believe.Grunff said:Very easy to bring the level down (if you feel this is necessary; but that's a different story) by increasing the ventilation. What are the current ventilaltion arrangements for each room?
I guess most comes up from the ground, but what about walls made of that nice cornish granite? Ventilation is the way to deal with it though.Normal BCO resolution in cases like this is to insist on suspended floors with underfloor vents I believe.
The reason suspended floors with a 'sump' arrangement work is because radon is very heavy, and will collect at the lowest point - even if it is coming from the walls.Dave said:I guess most comes up from the ground, but what about walls made of that nice cornish granite?
Agreed - far more practical to install in an existing house.Ventilation is the way to deal with it
though.
Only to a small degree.Can Radon get through plastic DPM?
I think that the walls are not the usual major problem. IIRC its more a question of it seeoping up from the ground.Dave said:I guess most comes up from the ground, but what about walls made of that nice cornish granite? Ventilation is the way to deal with it though.
Not that well, no, but that raises the concentrations under it so any small leak...Maybe we need more info from the OP. Type/age of house, floor construction, recently fitted DG'ing etc. I'd have thought any moderately recent place with a solid floor would have a plastic DPM these days. Can Radon get through plastic DPM?
Ah. I hadn't thought that through. It has to be heavy, being radioactive...Grunff said:The reason suspended floors with a 'sump' arrangement work is because radon is very heavy, and will collect at the lowest point - even if it is coming from the walls.
It's usually large atoms that are unstable."Chris Bacon" said:Eh?The said:Ah. I hadn't thought that through. It [radon] has to be heavy, being radioactive...
Not necessarily, Tritium isn't.The Natural said:Ah. I hadn't thought that through. It has to be heavy, being radioactive...
Radioactive nuclei are radioactive because they are effing big and disintegrate.Chris said:Eh?The said:Ah. I hadn't thought that through. It [radon] has to be heavy, being radioactive...
Its ALWAYS large atoms that are unstable.Rob said:It's usually large atoms that are unstable."Chris Bacon" said:Eh?The said:Ah. I hadn't thought that through. It [radon] has to be heavy, being radioactive...
Tritium is not IIRC radioactive...bof said:Not necessarily, Tritium isn't.
On investigation, you are right. Tritium is both light and radioactive, It also has a half life measured in days, so poses very little hazard.bof said:Not necessarily, Tritium isn't.
<ahem>The said:Radioactive nuclei are radioactive because they are effing big and disintegrate.
All radioactive elements are HEAVY.
No, really, it is.The said:Tritium is not IIRC radioactive...
12.something years, according toOn investigation, you are right. Tritium is both light and radioactive, It also has a half life measured in days, so poses very little hazard.
This will be a different kind of tritium, then, from the stuff in the Traser key-tags in my pockets, will it? Ummm...Perhaps I should have said more exactly that 'any radioactive element with a sufficient half life to actually be present and represent a risk to health will be very heavy'
Tritium only occurs naturally AFAICT on account of cosmic ray bombardment. It decays as fast as it is produced.
That covers you for the many radioactive isotopes of common elements then (C13, N15 etc).The said:Perhaps I should have said more exactly that 'any radioactive element with a sufficient half life to actually be present and represent a risk to health will be very heavy'
Well Tritium has a half life of around 12 years, Uranium 235 (the stuff they make atomic bombs from) has a half life around 700million years.The Natural said:Tritium is not IIRC radioactive...
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