Crawl space sub-membrane depressurization in Sergeantsville

Whether crawl space sub-membrane depressurization is the right answer in Sergeantsville depends on what is actually under the floor.

When this is the right question

• A reading that stays high in a house with no slab to work through
• A dirt-floored or stone-walled crawl space under an older farmhouse
• Insulation and ductwork in a crawl the ground is open to

Why this comes up in Sergeantsville

Public supply does not reach the village or the farmland around it. A well here draws from the Lockatong argillite — the uranium-bearing rock that makes this corner of the county what it is. That is part of the context any crew working in Sergeantsville has to design around.

Sergeantsville is the village at the centre of Delaware Township, near the state's last remaining covered bridge, and that shapes what a system here has to be designed around.

Practicalities in Sergeantsville

Village lots are modest; the surrounding farm properties are open.

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

Where there is no slab, the ground itself becomes the barrier. Reinforced membrane is laid over the crawl-space floor, sealed to the walls and around the piers, and a suction point beneath it is piped to a fan. Sealing quality is the whole job here — a membrane taped at the seams and left loose at the wall performs nothing like one properly terminated.

The sooner it is measured, the more of the options stay open.