These are pictures of a block wall depressurization system. The Radon was entering through the walls of this older home and not from the floor. Two suction points were needed to create a vacuum to the Radon entry points around most of the walls

            Outside View                                              1st Inside View                                2nd inside View showing perfomance indicator

 The following are pictures of various jobs.

 RadonAway GP501 fan with painted exhaust.

                          Outside View                                                   Inside View

                                         Outside View                                                                                   Inside View

This is a crawlspace system covered with a high quality white membrane. This type of

material is a little more costly than using 6mil white or black plastic. These systems

should be sealed at the walls. columms and seams. Some older homes will have places

that are physically impossible to reach but as much of the area as possible should be

covered sealed.