ASTM E3069-19a PDF Download

ASTM E3069-19a is a standard guide that addresses the evaluation and rehabilitation of mass masonry walls for changes to thermal and moisture properties. The purpose of this guide is to ensure that any modifications made to the exterior walls of existing buildings do not have negative impacts on the masonry, wall components, and building operations.

The guide emphasizes the importance of understanding the original construction, subsequent alterations, condition of materials, properties, moisture content, and potential for water and air leakage before making any changes to the thermal or moisture resistance of the wall. Improper alterations could lead to degradation of the masonry, moisture-related problems, and indoor air quality issues.

The standard describes methods for evaluating moisture accumulation problems specific to mass masonry walls but does not apply to walls with provisions for managing bulk water. It also provides guidance on analyzing, designing, and specifying materials with the necessary thermal, air, and vapor resistance to improve the energy performance of existing mass masonry walls without creating problematic conditions.

It is important to note that the standard applies to masonry walls meeting the criteria of a "mass masonry wall" as defined within the standard and doesn't apply to masonry walls designed to manage water as a barrier or drainage system.