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Belzona® Seals Floating Tank Roof

Customer Location

Chemical Plant, Texas U.S.A.

Application Date

November 2008

Application Situation

Overlapped welded plate on floating tank roof was trapping water allowing corrosion.


There was substantial head pressure in the tank resulting in loss of product containment through the corroded seam. This was not only an operations concern, but an environmental and safety issue as well.


Belzona® 1291 (ES Metal)
Belzona® 1221 (Super E Metal)
Belzona® 2111 (D&A Hi-Build Elastomer)


Carbon steel

Application Method

Application was carried out in accordance with Belzona Know-How System Leaflet TCC-1. The active leak was stopped with Belzona® 1291. Repair area leveled with Belzona® 1221. Over-coated taped off area with Belzona® 2111 to provide flexible seal. Operatives wore air fed masks to meet safety requirements.

Belzona Facts
(Cost Savings?, Alternatives?, Why Belzona?, etc.)

Cost was approximately $3000 in labor and material for Belzona repair versus approx. $300k to drain, gas-free tank, and do weld repair. Dollars associated with decreased production from down-time are also a factor, including costly potential fines from regulatory agencies due to atmospheric emissions from product containment loss.

Photographs Description

  1. Surface preparation of the seam
  2. Belzona® 1291 used to stop active leak
  3. Area taped off and additional leak protection with Belzona® 1221
  4. Final coating protection with Belzona® 2111
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