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Air Barrier Testing of Concrete Masonry Assemblies and the Effect of Surface Coatings on Air Permanence

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Model building codes and standards have begun adopting new energy efficiency requirements for building envelopes, including more quantifiable assessment of the air permeance characteristics of the materials and assemblies used in the building envelope. This research effort was initiated to understand and quantify the air leakage mechanisms of single wythe concrete masonry construction, which is commonly used in exterior building envelopes. 

Product Number: 41212-685-SG
Author: Nicholas Lang, Jason Thompson
Publication Date: 2012
Industries: Buildings and Plant Equipment , Coatings
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$20.00
$20.00

Model building codes and standards have begun adopting new energy efficiency requirements for building envelopes, including more quantifiable assessment of the air permeance characteristics of the materials and assemblies used in the building envelope. This research effort was initiated to understand and quantify the air leakage mechanisms of single wythe concrete masonry construction, which is commonly used in exterior building envelopes. At the time this project was initiated, test standards lacked specific procedures for evaluating the air permeance of concrete masonry assemblies. As such, the first phase of this research investigation was focused on identifying, defining, and verifying appropriate procedures that produced repeatable and accurate air leakage results of concrete masonry construction. Once appropriate testing protocols were developed, the next phase of research evaluated the influence on air permeance of several different components common to single wythe concrete masonry construction. These variables included integral and surface-applied water repellents and similar surface coatings.

Model building codes and standards have begun adopting new energy efficiency requirements for building envelopes, including more quantifiable assessment of the air permeance characteristics of the materials and assemblies used in the building envelope. This research effort was initiated to understand and quantify the air leakage mechanisms of single wythe concrete masonry construction, which is commonly used in exterior building envelopes. At the time this project was initiated, test standards lacked specific procedures for evaluating the air permeance of concrete masonry assemblies. As such, the first phase of this research investigation was focused on identifying, defining, and verifying appropriate procedures that produced repeatable and accurate air leakage results of concrete masonry construction. Once appropriate testing protocols were developed, the next phase of research evaluated the influence on air permeance of several different components common to single wythe concrete masonry construction. These variables included integral and surface-applied water repellents and similar surface coatings.

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