Sample Report for a Radon Mitigation System Inspection

___ active sub-slab depressurization;
___ passive sub-slab depressurization;
___ sump (pit) depressurization (active);
___ drain-tile depressurization;
___ sub-membrane depressurization;
___ hollow-block wall depressurization;
___ crawlspace depressurization; or

___ heat-recovery ventilation.

___ The inspector noted that the drain pipes that extend to daylight were missing devices, such as one-way flow valves or water traps, that prevent outdoor air from entering the sub-slab area.

___ The inspector noted that the vapor retarder used for the sub-membrane depressurization system (passive or active) had seams that were lapped less than 12 inches, or edges that were not sealed to the walls, posts or other penetrations.

___ The inspector noted that the hollow-block walls had cracks, openings or open top-courses.

___ The inspector noted that the crawlspace had the presence of asbestos-like material, or combustible fuel-served appliances located within the crawlspace or spaces adjacent to the crawlspace.

___ The inspector noted the area around the HRV system had the presence of asbestos-like material.

___ The inspector noted piping that is not PVC, ABS or downspout (outside).
___ The inspector noted piping subjected to weather or physical damage that was not Schedule 40.
___ The inspector noted pipe and fitting connections of different materials.
___ The inspector noted piping that wasn’t solid or rigid.
___ The inspector noted reducers that were installed in the direction of air flow.

___ The inspector noted piping that was not continually sloped toward the suction point(s).

___ The inspector noted supports installed more than 6 feet apart on horizontal runs.

___ The inspector noted supports installed more than 8 feet apart on vertical runs.

___ The inspector noted discharges less than 10 feet above ground level.
___ The inspector noted discharges less than 6 inches above a roof edge, rake or gable that its stack passed by.
___ The inspector noted discharges that exhausted less than 12 inches above a roof surface through which its stack pipe passed.
___ The inspector noted discharges that exhausted below the roof surface of the highest roof of the building.

___ The inspector noted discharges within 2 feet directly above or less than 10 feet from a window, door or opening.

___ The inspector noted interior radon fans installed in occupied or conditioned spaces.
___ The inspector noted exterior radon fans installed underground.
___ The inspector noted radon fans that were not connected to the piping with removable couplings or flexible connections.

___ The inspector noted radon fans that were not mounted vertically.

___ The inspector noted missing condensate bypass mechanisms on a system in a cold climate.

___ The inspector noted cord and plug assemblies supplying power to radon fans that were more than 6 feet in length.
___ The inspector noted cord and plug assemblies supplying power to radon fans that passed through walls, floors or ceilings, or were concealed within building components.
___ The inspector noted missing means of disconnect, such as a dedicated, labeled electrical breaker or switch, or an electrical plug cord.
___ The inspector noted means of disconnects not in sight of their radon fans.
___ The inspector noted missing grounded receptacles (required within 6 feet of radon fans installed under roofs).
___ The inspector noted missing GFCI receptacles (required within 6 feet of radon fans installed above roofs).

___ The inspector noted missing electrical junction boxes (required within 6 feet of radon fan locations of both active and  passive systems).

___ The inspector noted condensate drainpipes that were not directed into condensate pumps, not directed into trapped floor drains, or did not have 6-inch or greater standing water-trap seals.

___ The inspector noted missing air-flow or pressure-monitoring devices, which are required to provide easily visible or audible indication of system failure or performance in active systems.

___ The inspector noted missing piping labels (required on each floor to identify piping as part of a radon system).
___ The inspector noted missing labels on the plastic vapor barrier (if installed).
___ The inspector noted labels that are illegible from a distance of 3 feet.
___ The inspector noted piping or vapor barrier labels that failed to display one the following: “Radon-Mitigation System,” “Radon-Reduction System,” “Radon System” or “Radon-Removal System.”
___ The inspector noted a missing main label that contains the mitigator’s name and contact information, date of installation, and a recommendation to test the building for radon every two years.

___ The inspector noted a missing “Radon,” “Radon Fan” or “Radon System” label at the disconnect breaker controlling the electrical circuit to the radon fan. 

 

This inspection was performed by: ____________________________________ 

 

Signature: ____________________________________

 

 

Other Home Inspection Checklists and Standards 

Radon Mitigation System Inspection Standards