KHIA headerKnow-How in Action


Belzona® Gives New Life To Rubber Roof



Buildings & Structures (BSTR)



Roof Problem Areas (RPA)


Customer Location:

Property Managment Company, Maryland, U.S.A.


Application Date:

June 2008


Application Situation:

3,000 sq.ft (270m²) rubber membrane roof on office building. the roof was 20 year old with ballast rocks



Roof had started to leak due to holes in the rubber membrane. The customer wanted the roof fixed quickly and without tearing off the old roof.



Belzona® 3111 (Flexible Membrane)


Rubber membrane


Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet RPA-6 & -8. The ballast was removed and the rubber membrane pressure washed. The rubber membrane was then mechanically fastened and rubber "peel-and-stick" pads were placed over each mechanical fastener washer. Fully reinforced Belzona Flexible Membrane System then applied using Belzona® 3921 as Conditioner.


Belzona Facts:

Customer was very satisfied with the project and said that we "...had no idea how much money we saved the company". This project was done in 4 days with 4 people. If the roof had been "Torn-Off" and a new roof installed it would have taken about twice as long and about twice as much labor.


Photographs Description

  1. Existing rubber roof with ballast rocks
  2. Rocks removed, membrane fastened and primed
  3. 1st coat of Belzona® 3111 applied
  4. Completed roof project
Case study pic one


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 Case study pic three


 Case study pic four


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