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active sub-slab depressurization 5

https://violetmetric.com/s/9TKAjJ7hPe_tfasWjT6K7

Active sub-slab depressurization works quietly beneath concrete foundations, using a fan system to draw radon-laden soil gas away from the building before it can seep inside. The suction created by the fan maintains negative pressure under the slab, effectively venting harmful gases to the outdoors. It's a practical, code-recognized method for lowering indoor radon levels, commonly installed during new construction or retrofitted in existing homes. The system includes a sealed pipe network, a d…