PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Problem Solving Forum

| More

August 23 - August 29, 2010

What is the best method of testing for moisture content in concrete masonry unit (CMU) walls prior to application of coatings?


Selected Answers

From Glenn Summers of Conselcor Inc. on November 10, 2010:
The most effective test of moisture in concrete is the interior relative humidity testing. Almost all manufacturers of floor coverings and paints will require 70% or less before allowing coverage. Bear in mind that is not the final step one should take prior to a coating or install of a flooring system. Unless you render the substrate Hydrophobic by use of a pore blocking penetrating sealer, you will still have a surface capable of absorbtion of contaminates and moisture and migration of internal chemistry out to a surface. Absorption begets rebar corrosion that may be the slow death, while migration outward will yeild ASR and effloresence. I use a penetrating sealer the comes with a 15 year warranty for waterproofing and have Never been disappointed!

From William R. Stein of S & B Coatings-Floors on August 23, 2010:
Cheapest method is taping a 3X3 plastic film to the wall and waiting 24 hours.

Please sign in to submit your answer this question    

Tagged categories: Concrete; Humidity and moisture


Current PSF Question | Submit a PSF Question | Full PSF Archive

Advertisements
 
Waterjet Technology Association (WJTA)
 
Click to register today!
 
See the latest automated and handheld UHP waterblasting tools/systems/products. Exhibits, live demos, educational sessions, waterjet short course, networking.
 

 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Coatings Adhesion Testers
 
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
Detail Masters
 
Overspray Removal
 
We offer professional, turnkey service and unparalleled quality!
Our process can save hundreds— even thousands of dollars. It's fast, environmentally safe and 100% guaranteed.
 

 
BASF
 
New resins from BASF will have metals loving water!
 
Excellent corrosion resistance, low VOC, high gloss, thin films www.basf.us/industrialcoatings dpsolutions@basf.com 800-231-7868
 

 
Safway Services
 
Safeguard Assets. Ensure Productivity. HAKI®
 
Protect assets and equipment. Keep facilities open and operational. Maintain schedules regardless of weather. Ensure smooth and continuous production. Easy to erect. Safway is the primary distributor of HAKI® products including HAKISPAN and HAKITEC® 750 – in North America.
 

 
Strategic Materials Inc.
 
Crushed Glass Abrasives
 
TruAbrasives™, a clean crushed glass abrasive superior to other abrasives for performance, health, and environmental benefits.
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-TATOR LABORATORY SERVICES
 
• Coating failure analysis
• Independent testing
• Accelerated weathering testing
• Abrasives Testing
• Oil & Gas Material Qualification
• A2LA Accredited
Contact: Rob Leggat at
412-788-1300 x180
 

 
PPG Protective and Marine Coatings Group
 
We Protect and Beautify the World
 
PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.
 

 
Termarust Technologies
 
Termarust (HR CSA) Chemically Stops
Active Corrosion
 
Arch truss treated with Termarust's (HR CSA) in 2003. This steel arch bridge is rust free on all surfaces including the crevice corroded joints and connections.
 

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us