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EFFECT OF AN EXTERIOR AIR-INFILTRATION BARRIER ON MOISTURE CONDENSATION AND ACCUMULATION WITHIN INSULATED FRAME WALL CAVITIES.

Author(s) : TRECHSEL H. R., ACHENBACH P. R., EBBETS J. R.

Summary

A SERIES OF LABORATORY TESTS WERE CONDUCTED WHERE WARM AND MOIST INDOOR AIR CIRCULATES THROUGH WALL CAVITIES. 3 WALL SEGMENTS WERE INSTALLED IN AN ENVIRONMENTAL CHAMBER. THE TESTS WERE CONDUCTED FIRST ON THE WALL SEGMENTS WITHOUT THE AIR-INFILTRATION BARRIER AND WERE REPEATED WITH A BARRIER INSTALLED. THE RESULTS INDICATE THAT THE AIR-INFILTRATION BARRIER INSTALLED BETWEEN THE SHEATHING AND THE SIDING CAUSES A MORE EVEN MOISTURE DISTRIBUTION BY DECREASING THE ACCUMULATION OF CONDENSATION IN BUILDING MATERIALS AND THAT THE HIGHEST MOISTURE CONTENT IN THE SHEATHING OCCURRED UNDER MODERATELY COLD CONDITIONS, WHILE THE HIGHEST MOISTURE ACCUMULATION IN THE FIBERGLASS OCCURRED UNDER MORE SEVERELY COLD CONDITIONS.

Details

  • Original title: EFFECT OF AN EXTERIOR AIR-INFILTRATION BARRIER ON MOISTURE CONDENSATION AND ACCUMULATION WITHIN INSULATED FRAME WALL CAVITIES.
  • Record ID : 1986-2441
  • Languages: English
  • Publication date: 1985
  • Source: Source: ASHRAE Trans.
    vol. 91; n. 2A; 545-559; 6 fig.; 5 tabl.; 7 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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