Sub-membrane (Vapor Barrier)
Sub-membrane neatly installed and sealed.
Exterior radon fan (Festa Legend Fan)
Extraction Point 1
Extraction point for the concrete slab
Extraction Point 2
2nd extraction point for the concrete slab on the other side of a block wall
Sub-membrane vapor barrier
The radon system is connected to the sub-membrane creating negative pressure under the sealed barrier. We use a 20 Mil cross-braided antimicrobial coated membrane that is the top in the market.