Radon + Crawlspace?
We are having our 1 year old house in Central VA inspected for radon.
Should have had it done when the floors were open but now we move forward.
If radon levels come back high & our crawlspace is already conditioned & sealed - I believe a Crawlspace Sub-Membrane Suction method is suggested.
Where a thick plastic sheeting is laid onto the crawlspace gravel floor & sealed tight to the walls & then a suction tubing will be installed into that sheeting & a fan will suck that out a pipe.
Question: can that tube/pipe be run out the crawlspace wall & then up the side of the house - so how high does it need to be vented up in the air?
I see it recommended as high as possible but I am really really wanting a minimum length guide if possible.