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Sandstone Mullion Repairs With Belzona



Buildings & Structures (BSTR)



Wall Problem Areas (WPA)


Customer Location:

Private Householder, Scotland


Application Date:

July 2003


Application Situation:

Householder had a problem of cracks in the sandstone Mullions of his bay windows.



The cracks were getting worse due to frost damage in the winter months and previous attempts at concrete repairs had failed at the bond lines.



Belzona® 4141 (Magma Build)



Red Sandstone


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet WPA-4. The cracks were opened out and filled prior to the whole mullion being skimmed with Belzona® 4141 tinted to match the colour. The original grooving on the stone was replicated in the Belzona® 4141.


Belzona Facts:

If the Mullions had not been repaired then it would have resulted in them becoming unstable. Traditional repair Methods had failed and replacement units were unavailable.


Photographs Description

  1. The problem. Note the grooving of the sandstone.
  2. Belzona® 4141 being applied as a skim coat.
  3. Finished application.
  4. Inspected December 2007.
Case study pic one


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 Case study pic four


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