Critical Elements in Specifying Underslab Moisture & Gas Barriers

Critical Elements in Specifying Underslab Moisture & Gas Barriers

This comprehensive course covers the critical elements of specifying underslab moisture and gas barriers to create healthy environments in commercial buildings and residential homes.

Purpose: Provides an overview of the critical properties that require consideration when specifying underslab vapor barriers and moisture/gas barriers, as well as discussions on the basic installation guidelines to help ensure a successful installation.

Learning Objectives:

At the end of this program, participants will be able to:

  • define the terms "vapor barrier" and "gas/moisture barrier" and explain when an underslab barrier is necessary to assure a healthy environment and to avoid structural deterioration
  • identify the three critical properties and minimum values listed in ASTM E 1745 and how to apply them when selecting a barrier based on building design and performance requirement
  • state and design elements required for a successful radon gas barrier based on EPA guidelines, and
  • explain the basic installation guidelines for vapor barriers and moisture/gas barriers to help ensure a successful installation.

Completion of this course provides one (1) Learning Unit (LU) of Health, Safety & Welfare Content (HSW).