PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Chemical & Petrochemical Plant Coating Systems

Problem Solving Forum

| More

November 25 - December 6, 2013

During a week of heavy rain, we painted the interior of a heated concrete building. The paint blistered badly a week later on the walls with an outside exposure. What’s the best way to remove the coating, prepare the surface, and recoat to prevent future blistering?


Selected Answers

From Car F. of Municipal City on December 3, 2013:
Before doing anything on the INSIDE, I would investigate whats on the outside walls and what kind of waterproofing was applied [if any] to the exterior walls. You seem to indicate that the walls NOT facing the outside were fine, so this may point  to a problem related to the exterior walls and not necessarily to the actual coating. Concrete is not impervious, and water and moisture will migrate, sometimes a great distance.

From juan hurtado of International Paint on November 27, 2013:
You can also remove the coating by blasting with with crushed  walnut shells, which is a lot faster than soda blasting.And I would also recommend  checking the concrete for moisture.

From Michael Quaranta of OPERATIONS 40 on November 25, 2013:
Well, for the first element of searching for a response, what kind of coating was used? Probably the heated concrete building was very high in interior humidity, and if you used the standard epoxy, it was doomed for failure. Without knowing what coating was used, it becomes a guess about the best the removal process. Soda blast would be slow but perhaps the best. Next, use a water-based epoxy, and either spray of roll that coating (colors available) on the concrete wall. The pot life is more than 2 hours and the cure is razor-proof after 24 hours.

Please sign in to submit your answer this question    

Tagged categories: Blistering; Coating failure


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

DeLong Equipment
Delong Equipment Co.
Blast Equipment Products

"The Delong Equipment Company .….supplying abrasive blast equipment, parts and abrasives to blasting contractors, manufacturers and industry for over 45 years”


Blastox/The TDJ Group, Inc.
Blastox - One Step
Lead Abatement

Don't waste $$ on added labor steps with other methods. Don't mix, meter or apply at the job-site. Avoid strict hazardous waste rules.
Let your painters paint!


NLB Corporation
See NLB Crawler hit the heights

Surface prep 100 ft. and more above the ground is easy with the SRT-10-W-1 Crawler. Rotating water jets work fast, with vacuum recovery and wireless controls.


Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com


DeHumidification Technologies
HUMIDITY PROBLEMS?

DH Tech has the most innovative and reliable equipment available to
control humidity efficiently
and effectively.
IT'S UNDER CONTROL!


International Paint LLC

International Paint Engineered Coatings

Learn about our solutions for:
  • Structural Steel
  • Piping & Equipment
  • Storage Tanks
  • Pressure Vessels
  • Secondary Containment


    CS Unitec
    Surface Prep & Material Removal

    CS Unitec’s Floor Planers remove coatings & corrosion from concrete & metal surfaces. Produce keyed profiles for waterproofing applications. info@csunitec.com

  •  
     
     
    Technology Publishing

    The Technology Publishing Network

    The Journal of Protective Coatings & Linings (JPCL) PaintSquare
    Durability + Design Paint BidTracker JPCL Europe

     
    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
     

    © Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
    2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com