Hunterdon County · 25 of 26 towns NJDEP Tier 1 Action level 4.0 pCi/L Free for homeowners — paid by the crews

Delaware Township, Delaware Township

Block-wall depressurization in Delaware Township

Suction drawn from inside a hollow block wall, with the top course sealed. The piece a slab-only system misses on block foundations.

If you are looking into block-wall depressurization in Delaware Township, what the building sits on is the place to start.

How this normally comes up

  • Radon entering high on the wall rather than at the floor
  • An older block wall with an open top course
  • A hollow concrete-block foundation wall

Why this comes up in Delaware Township

Here is what makes Delaware Township particular: public supply reaches little of Delaware Township. A well draws from the Lockatong and Stockton formations, so the water and the soil gas share a source.

Delaware Township — the state's own numbers

42% of the 668 test results NJDEP holds for Delaware Township were at or above the 4.0 pCi/L action level — 283 of them. That puts it in Tier 1 — high potential.

Delaware Township is a large rural township between the Delaware River and the Sourland country, almost entirely farmland and woodland, and that shapes what a system here has to be designed around.

Practicalities in Delaware Township

Open rural properties, though long private drives and outbuildings can constrain where equipment goes.

Any permit for this runs through Delaware Township. NJDEP radon certification has to be current before a business receives anything from us.

What the work involves

Hollow block walls are a network of interconnected voids running from the footing to the top course, and soil gas uses them as a chimney. Treating them means sealing the top course and drawing suction from inside the cavity, usually alongside a sub-slab system rather than instead of one.

Typical cost in Hunterdon County, NJ

$1,800 – $3,200 — typical range, not a quote. What your building needs can only be settled by a certified business that measures it on site.

The right answer depends on your specific building, which is why somebody has to measure it.

Certification, checked before referral

Installing radon mitigation for a fee in New Jersey requires NJDEP certification as a radon mitigation business, affiliated with a certified radon mitigation specialist (N.J.A.C. 7:28-27). We confirm that on the NJDEP register and record the date we checked. That is a check, not an endorsement — satisfy yourself before you hire.

Want a quote before the closing date?

Describe the foundation and the reading. We'll match it to businesses certified for exactly that work, at no cost to you.

Get quotes in Delaware Township →