KHIA headerKnow-How in Action


Belzona® Seals Process Tower Roof



General Industry (GIND)



Roof Problem Areas (RPA)


Customer Location:

Fertiliser Plant, France


Application Date:

October 2018


Application Situation:

Aluminium roof of a process tower



The roof of a process tower in this fertiliser plant was leaking due to the chemicals that were attacking the welds. Infiltration of water was becoming problematic for the production and the roof had to be fixed.



Belzona 1111 (Super Metal)

Belzona 1161 (Super UW-Metal)

Belzona 1212

Belzona 3121 (MR7)



Aluminium sheets


Application Method:

The previous repairs were removed and Belzona 1111, 1161, 1212 and 9341 (reinforcement sheet) were used to seal the gaps. Then two coats of Belzona 3121 were applied on top of the repairs to seal in accordance with Belzona KNow-How System Leaflet RPA-1.


Belzona Facts:

The other classic sealing methods with silicon or resin did not withstand the conditions. Welding was not allowed on site because of the presence of chemicals, and would still leave the area prone to corrosion. The fact that the whole application could be carried out without any hot work was a great advantage for the customer.


Photographs Description

Before application

Sealing step with paste grades

Final application

Sealing close up

Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


For more information about Belzona visit: