Posted on February 27,2015 by Peterbilt in Kitchen or bath addition
**Detail the house to keep unhealthful gases safely at bay.**
Preventing soil gases such as methane, petroleum products, pesticides, moisture, and radon from entering the structure requires a two-step strategy. Make the foundation as tight as reasonably possible, and make it easy to vent the layer of soil beneath the building by depressurizing it. These steps also help keep water out of the foundation. It is easier and less expensive to install a vent from the area beneath the slab during construction rather than after the house is finished.