Roof and Associated Components Service and Repair Guidelines
Illustration D
3. All paint, primer, adhesive, and any other protective coatings must be removed from all mating surfaces prior to application of any adhesive for the
backer panels. Grind a 2.5cm (1 inch) contact area on all panels where you will do your backer panel bond. The metal should be bare and shiny in
appearance. The panels to be used as the backer panels must also be free of all coatings. Bevel the backer panel to prevent moisture or condensation
from collecting between the panels.
