Final Report


Principal Investigator: Louise F. Goldberg
Building Physics and Foundations Research Programs (BPFRP)
University of Minnesota
Project Manager: Gabe Farkas
Icynene Inc.
Date:  3/3/2004
Revision:  C
Status: Approved for publication


The research described herein has been performed with funding provided by Icynene Incorporated. 
While this financial support is gratefully acknowledged, the Principal Investigator assumes complete responsibility for the contents herein.

1.    Introduction

The objective of the experiment was to measure the moisture performance of open-cell, sprayed-on Icynene thermal insulation in a Minnesota interior basement application.  A critical goal was to determine whether Icynene without any vapor retarders (wall-side or interior) can yield acceptable moisture performance, specifically, have a stable annual wetting/drying cycle, not develop any visible or olfactory mold and not produce any condensate rundown on the wall surface or pooling on the floor.  For comparison, the following vapor retarder configurations using 6-mil. polyethylene also were tested:

The last two variations are of particular interest since they are two interpretations of the Minnesota building code rules in chapters 7670 and 7672 pertaining to foundation interior vapor retarders and wall-side "moisture barriers".

2.    Experimental Design

3.    Photographic Record

  1. Installation
  2. Weekly Observations

4.    Experimental Results

5.    Discussion Topics

6.    Conclusions

7.    Appendices:

  1. Weekly manual data

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