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Detailed Information
Limitations of
Underslab Vapor
Retarders
Moisture Emission
Problems
Vapor Transfer Testing
Moisture Test Kits
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Moisture Emission Problems
Flooring Failures
Water vapor emission from concrete slabs can adversely affect
moisture impermeable or moisture sensitive floors.
Adverse impacts include:
- adhesion loss
- peeling
- warping
- air or liquid bubbles beneath seamed, continuous flooring
- deterioration of adhesives
- ripping or separation of seams
- buckling of carpet and carpet tiles
Moisture from concrete will almost always contain dissolved alkaline salts (efflorescence) which can break down, soften, or liquefy adhesives and may help attack the flooring material itself. Alkaline water in combination with the organic constituents contained in most adhesives and flooring materials can provide an ideal environment for the growth of mold and mildew resulting in unacceptable appearance of the flooring, offensive odors and air quality problems.
Images courtesy of: Peter Craig, Concrete Constructives, Greene, ME.(opens in a new window)
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