RESOURCES

BACKSTOP Line Sheet

Article: Controlling Curling
and Cracking in Floors
to Receive Coverings

Article: Don't Puncture
the Vapor Retarder

 

 

 

Concrete Moisture Vapor Barriers

THE PROBLEM - INTERIOR SLAB MOISTURE

"Vapor barriers are becoming one of the least expensive most significant front line construction requisites in terms of importance. By taking the ground out of play, the moisture that is internal to the substrate is the only construction concern in a closed in building substrate. By leaving the substrate exposed to the soil and moisture, the potential for problems is a real possibility. Carbonation, moisture migration, biodegradability, and ASR are all potential detriments to long term structural integrity and performance issues without quality vapor barriers."

•  How do concrete design, placement, cure, and permeability relate to vapor drive?
•  What are concrete vapor emission characteristics (the damage potential)?
•  What are the mechanisms influencing vapor emissions?
•  What are the ancillary sources of consequential moisture?
•  Why do renovated surfaces with functional floor in place for years suddenly fail after renovation
   with or without vapor retarders (barriers)?
•  In what way could vapor emission contribute to indoor air quality issues (IAQ)?
•  Is alkalinity really that big a deal and what causes it?