Radon Mitigation in Wrightsville, PA 17368

Wrightsville sits on the west bank of the Susquehanna at the Veterans Memorial Bridge, and the ground under Wrightsville and Hellam Township is a mix of York Valley limestone along Route 462 and the Chickies Quartzite and older metamorphic rock of the Hellam Hills to the north and west. Both produce high radon: DEP test data for the 17368 ZIP code shows average basement readings above 4.0 pCi/L, and homes on the Hellam Hills ridges and river bluffs frequently test in the 10–20 pCi/L range.

The borough's housing is largely 1800s–early 1900s brick rowhomes and singles on stone foundations with low basements, plus mid-century homes on block foundations toward Hellam. Stone-foundation basements leak soil gas through every joint, so sealing is a bigger part of the job here than in newer developments, and many older homes have a partial crawl space that gets a sub-membrane system tied into the main fan. The Hellam Township developments off Route 30 and Accomac Road are newer and usually take a standard single-point sub-slab system. Properties on wells along the river and in the hills should add a water radon test.