Radon Retrofit Difficulty Due to Existing Slab Condition

Older NJ basements in Morris, Sussex, and Hunterdon Counties frequently test above the EPA 4 pCi/L radon action level but have cracked, thin, or patched slabs that make sub-slab depressurization retrofits ineffective. Suction points leak and mitigation systems underperform.

A basement floor lowering project rebuilds the slab from scratch over fresh aggregate, a new vapor barrier, and a radon-ready stub-up, guaranteeing that any future mitigation system will achieve full suction across the basement footprint.