We have a basement. (Under the house ;-) ) It consists of concrete walls, with wooden floors between levels. The ceiling is low, so you have to bend your back to get around.
It consists of 4 sections:
* [A] a part with a concrete floor (this is where a water heater is located)
- you can climb/go through a hole in the concrete wall to get to
* a part with a dirt floor covered with plastic
- this area is about 2 dm lower in height
* [C] another section accessible through a hatch from outside the house - with a dirt floor covered with plastic
* [D] yet another section accessible through a hatch from outside the house - with a floor covered with sand - no plastic
- the floor & walls of this section are made of LECA
C & D have no vents between them.
There have been no moisture problems in A, B, & D.
There have been moisture problems in C. BUT after the damaged plastic was replaced with NEW plastic, it is good again.
Wish to make these more "robust" considering moisture & radon...
It consists of 4 sections:
* [A] a part with a concrete floor (this is where a water heater is located)
- you can climb/go through a hole in the concrete wall to get to
* a part with a dirt floor covered with plastic
- this area is about 2 dm lower in height
* [C] another section accessible through a hatch from outside the house - with a dirt floor covered with plastic
* [D] yet another section accessible through a hatch from outside the house - with a floor covered with sand - no plastic
- the floor & walls of this section are made of LECA
C & D have no vents between them.
There have been no moisture problems in A, B, & D.
There have been moisture problems in C. BUT after the damaged plastic was replaced with NEW plastic, it is good again.
Wish to make these more "robust" considering moisture & radon...
Hello
I would say that what you have is a crawl space. A crawl space with quite a high height.
Since you have replaced the damaged plastic, there is no need to do anything more if the relative humidity remains stable. That is, below 75% year-round.
Replacing the plastic with something else without the humidity being too high will only cost a lot of money and may cause other problems. The simplest solution is to set up one or two dehumidifiers if you're worried about the moisture.
Regarding the risk of radon, I'll let someone else comment on that. But you should start with a measurement if you're concerned.
The Geological Survey of Sweden has a map service where you can see the amount of gamma radiation from the ground in the area where the house is located.
https://apps.sgu.se/kartvisare/kartvisare-uranstralning.html
The amount of radon from building materials usually depends on when the house was built.
I would say that what you have is a crawl space. A crawl space with quite a high height.
Since you have replaced the damaged plastic, there is no need to do anything more if the relative humidity remains stable. That is, below 75% year-round.
Replacing the plastic with something else without the humidity being too high will only cost a lot of money and may cause other problems. The simplest solution is to set up one or two dehumidifiers if you're worried about the moisture.
Regarding the risk of radon, I'll let someone else comment on that. But you should start with a measurement if you're concerned.
The Geological Survey of Sweden has a map service where you can see the amount of gamma radiation from the ground in the area where the house is located.
https://apps.sgu.se/kartvisare/kartvisare-uranstralning.html
The amount of radon from building materials usually depends on when the house was built.