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Belzona® Seals Skylight To Prevent Water Penetration



Buildings & Structures (BSTR)



Roof Problem Areas (RPA)


Customer Location:

Cambridge, ON, Canada


Application Date:

August 2010


Application Situation:

A skylight on the roof of a building.



Water penetration between roofing sheets and around the skylight.



Belzona 3111 (Flexible Membrane)

Belzona 3921 (GSC Surface Conditioner)

Belzona 9311 (Reinforcing Sheet)



Corrugated steel


Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet RPA-01 for repairing and sealing joints and seams. A wire brush was used to remove any loose adherent and flaking rust and Belzona 3921 was applied to the prepared surface. Belzona 9311 was layed over the conditioned area and Belzona 3111 was applied with a soft bristle brush as a two coat system in accordance with Belzona Instructions For Use.


Belzona Facts:

Revisited in June 2014 with no leaks to date. Belzona 3111 is a single component, solvent free, microporous coating for the long-term repair and protection of all types of roofs. This versatile liquid applied material provides outstanding weatherproofing and waterproofing properties with excellent protection against infrared and ultra violet radiation.


Photographs Description

  1. Prior to application
  2. Preparation in progress
  3. Application in progress
  4. Completed application
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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