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Heat and Moisture Transfer in Wood-Based Wall Construction: Measured Versus Predicted


This report describes a comprehensive laboratory study that evaluated the measured level of heat and moisture transfer in wood-based wall construction with the level predicted by MOIST, a personal computer program developed by the National Institute of Standards and Technology (NIST). The study measured the rate of heat transfer through 12 wall specimens, the moisture content of the exterior construction materials for eight of the 12 walls and the relative humidity level at the interior side of the exterior sheathing for the other four walls. The study compared these measured rates versus those predicted by MOIST.

Prepared by
R. R. Zarr, D. M. Burch and A. H. Fanney
Building and Fire Research Laboratory
National Institute of Standards and Technology

February 1995, 83 pages