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DeFelsko AIR PosiTest® Air Leak Tester

DeFelsko AIR PosiTest® Air Leak Tester

Part Number:DEFAIR
DeFelsko AIR PosiTest® Air Leak Tester

Quickly and easily detect air and water leaks in building envelopes and rigid air barrier systems. Ideal for testing penetrations (fasteners, masonry ties, etc.) and continuity of joints and seams in rigid air barrier systems.

For use with...

  • Single and two-ply membranes
  • Liquid applied membranes
  • Sprayed Polyurethane Foam (SPF)
  • Boardstock
  • Metal Liners
  • Exterior Insulation and Finish Systems (EIFS)
  • EPDM roofing systems
  • Waterproofing and more


  • Automatic mode depressurizes the test chamber at a selectable rate and limit

    Manual mode allows the user to control the rate of depressurization
  • Internal memory stores up to 200 test results with rate, time duration, limit and user-entered Pass/Fail conclusion
  • Portable, lightweight tester can be used in any position
  • Environmentally sealed enclosure - dustproof and waterproof
  • Built-in rechargeable batteries perform up to 200 tests per charge. Continue testing with AC power while batteries recharge. Supplied with universal AC adapter
  • High accuracy pressure sensor
  • Conforms to National Standards including ASTM E1186
  • Each kit comes with everything needed for testing
  • Includes FREE downloadable PosiSoft 3.0 Desktop Software for PC
  • One year warranty

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