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Radon mitigation installation before startup checklist

A pre-startup radon mitigation installation checklist for verifying suction points and sealed interfaces, crawlspace membrane or sump details, pipe size and supports, fan orientation and location, exterior and roof penetrations, condensate and freeze considerations, discharge clearances, electrical disconnect and labeling, warning device, fire and weather restoration, photographs, diagnostic records and correction of leaks or unsafe conditions before the fan enters continuous service.

6 items to check

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Suction points, sumps, drains and pressure zones match the approved diagnostic design

Critical item

The installed extraction path should serve the intended foundation zones.

Crawlspace membrane and sealing details are continuous, durable and serviceable where included

Critical item

Membrane work should support pressure control and remain inspectable.

Pipe, fan, supports, joints, condensate direction and service access follow design and manufacturer requirements

Critical item

The system should be airtight on the suction side and mechanically stable.

Discharge location and termination protect openings, occupants, neighbors and re-entry pathways

Critical item

Exhaust should discharge to an acceptable outdoor location under controlling requirements.

Electrical supply, disconnect, grounding, labeling, warning device, firestopping and weatherproofing are complete

Critical item

Continuous equipment should have safe power and visible failure indication.

Pre-startup photographs, pressure diagnostics, installed-product data and deviations are recorded

Critical item

The owner and tester should know exactly what was installed before operation changes conditions.

Use after physical installation but before normal continuous operation and before concealment of any part of the system. Stop work when suspect hazardous material, uncontrolled dust, sewage, extensive mold, unsafe structure, damaged containment, exposed energized work or an unplanned release is found. Homeowners should not collect asbestos samples, disturb suspect materials, enter regulated containments or perform specialist clearance testing unless properly qualified and permitted.

Reference standards

  • Current EPA lead, asbestos, mold and radon guidance; applicable federal, state, tribal and local environmental, occupational, licensing, disposal, permit and notification requirements; the signed remediation scope; laboratory and field reports; building and mechanical requirements; and exact containment, filtration, cleaning, disposal, mitigation-system and product instructions
  • Approved radon design, installer standard of practice, fan and monitoring-device instructions, adopted building, mechanical, electrical and fire requirements

    • Tools

  • Building-age and renovation records, environmental reports, laboratory results, contractor credentials, scope, permits, notifications, waste records, photographs and occupant-protection plan
  • Camera, flashlight, tape measure and owner-safe observation tools; specialist sampling, pressure monitoring, moisture instruments, clearance testing and radon devices where required
  • Qualified lead, asbestos, mold, industrial-hygiene, radon, mechanical, electrical, laboratory and medical professionals as appropriate

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