Defelsko PosiTest AIR Barrier Leak Tester


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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
This product does not have additional information.


  • Each kit comes with everything needed for testing
  • Includes FREE downloadable PosiSoft Desktop Software for PC
  • One year warranty


  • Internal memory stores up to 200 test results with rate, time duration, limit and user-entered Pass/Fail conclusion
  • High accuracy pressure sensor
  • Conforms to National Standards including ASTM E1186


  • 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.

Tester comes complete with shoulder strap, high impact polycarbonate test chamber, durable 5′ (1.5 m) hose with quick disconnect couplings, built-in rechargeable NiMH batteries with charger (AC power supply), 8 oz. test solution with dauber (Qty. 4), instruction manual, USB cable, PosiSoft Desktop Software (available as a free download), Certificate of Calibration traceable to NIST, one (1) year warranty and soft-sided nylon carry case.


Pressure Differential Range


100 – 900 Pa


Rate of Depressurization


5 – 30 Pa/Sec


Test Chamber Size


Ø16″ (40 cm) Base




1 Pa




± (10% + 10 Pa)


Carry Case Dimension


38 cm (15″) x 48.3 cm Ø (19″)




3.8 kg / 8.5 lbs.


Shipping Weight


6.7 kg / 14.7 lbs.



This product has no accessories.
This product does not have software options.
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