PaintSquare.com


The First Word in Protective & Marine Coatings

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

Problem Solving Forum

| More

November 15 - November 21, 2010

How do you repair delaminated areas of an elastomeric polyurea when the majority of the coating system is intact?


Selected Answers

From Tom Seabloom of 21st Century Coatings on November 22, 2010:
Tapering and feathering seem dangerous. In the repairs that I have done, I like full thickness of the intended system on the material left as well as the repair. It definitely has a tire patch look but having the material at the full thickness, I would think, improves the performance properties of the material, perm, for instances.

From Jeff Downing of Versaflex Inc. on November 17, 2010:
Not to dispute Mr. Rennert's answer, but a much more aggressive profile is required---36 grit at least. Wipe down with a product (not just solvent), DZOLV or similiar chemistry, to acheive the desired tack to the coating. Lacking this, you will not acheive an adequate bond line and will incur delamination when the coating is

From Rudi Rennert of Rhino Linings Corporation on November 16, 2010:
First and foremost, identify the cause for the delamination. Any contaminants left unchecked will only cause repeat faulure. Any loose material should be removed and remaining surrounding material should be well adhered. Sand and taper (using a 80-120 grit DA or similar) the edges of the elastomeric polyurea to provide a smooth transistion from remaining existing coating to the area where the coating was removed. No hard edges should remain. Any areas receiving new coating should be cleaned thoroughly using a solvent such as acetone. Finally, the area for repair should be primed using an approved adhesion promoter. Spray application should begin at the center of the repair, building the appropriate thickness and then tapering the new thicknes down to the surrounding areas where the original coating remains.

Please sign in to submit your answer this question    

Tagged categories: Elastomeric coatings; Polyurea


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

Dow Polyurethane Systems
Choose the Right Coat

Dow’s high-performance, protective polyurethane spray elastomer system increases durability for steel and concrete applications.


Termarust Technologies
Termarust (HR CSA) Chemically Stops
Active Corrosion

Truss bridge treated with Termarust's (HR CSA) in 1995. This highway & rail truss bridge is still stable and there still is no active corrosion.


Surface Prep Supply
Surface Prep Supply

Blast It! Coat It! We have you covered every step of the way. Supplier of:
• Abrasives
• Equipment
• Accessories
• Protective Coatings
888-331-7737(PREP)


KTA-Tator, Inc. - Corporate Office
KTA Analyzes
Coating Failures

• Field Diagnosis
• Lab Diagnosis
• Determination of Cause
• Recommendations
www.kta.com
800-245-6379


U.S. Zinc

The proven corrosion protection properties of our zinc dust prolong the life of marine coatings. U.S. Zinc – Helping the world work™


US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.


DRYCO
The one way to control
a tank: DRYCO

Temporary climate control equipment. Dehumidifiers,
Heaters, A/C, Power, More…
Toll Free: 866-379-2600

 
 
 
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