bgaidan
Red Skull Member
- Joined
- Jul 18, 2020
- Member Number
- 2322
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Anyone ever dealt with it? I'm familiar with traditional radon venting (sump hole in a basement slab/walls and suck the gas outside.), but this is a bit of a weird one...
I'm under contract to buy a property with two houses on it. One is old - the foundation dates back to 1810 and the house was "built" in 1989. The other is basically a smaller version of the main house that was built for the mother-in-law. Both are built in to hill sides where 3 walls are mostly underground. They're basically just big basements.
I had radon tests done as part of the inspection and got the results back last night.
Bigger house is 3,600sf and the foundation is made of ~1,5' thick stacked/mortared stone. Levels were:
2.9 pCi/L min, 10 max, 6.7 average.
Smaller house was built about 10 years ago, typical CMU block foundation walls, waterproofed in the underground parts. Levels were:
1.1pCi/L min, 8.7 max, 4.9 average
From what I'm reading, anything over 2.7 should be mitigated. Levels around 5 are the lung cancer risk equivalent to smoking a half pack a day.![eek :eek: :eek:](https://data.irate4x4.com/assets/smilies/eek.gif)
Like I said, I'm familiar with mitigation in normal house construction - either basement or crawl space - where you just suck the gas outside and keep it from getting in the living area, but I'm not sure how they accomplish that when the living area is effectively entirely comprised of a basement.
Any experts?
I'm under contract to buy a property with two houses on it. One is old - the foundation dates back to 1810 and the house was "built" in 1989. The other is basically a smaller version of the main house that was built for the mother-in-law. Both are built in to hill sides where 3 walls are mostly underground. They're basically just big basements.
I had radon tests done as part of the inspection and got the results back last night.
Bigger house is 3,600sf and the foundation is made of ~1,5' thick stacked/mortared stone. Levels were:
2.9 pCi/L min, 10 max, 6.7 average.
Smaller house was built about 10 years ago, typical CMU block foundation walls, waterproofed in the underground parts. Levels were:
1.1pCi/L min, 8.7 max, 4.9 average
From what I'm reading, anything over 2.7 should be mitigated. Levels around 5 are the lung cancer risk equivalent to smoking a half pack a day.
![eek :eek: :eek:](https://data.irate4x4.com/assets/smilies/eek.gif)
Like I said, I'm familiar with mitigation in normal house construction - either basement or crawl space - where you just suck the gas outside and keep it from getting in the living area, but I'm not sure how they accomplish that when the living area is effectively entirely comprised of a basement.
Any experts?