Metal Roof Magazine


25 years history of success - Roof leaks




EPDM Testimonials
verified pay pal
EPDM - Order Now
October Shipping Promotion
epdm order button

Weathered Galvanized

Carbon steel sheet is called “galvanized” when coated with a thin layer of pure zinc. Galvanized metal must be thoroughly sanded to give the epdm some “teeth” to grip into otherwise the product will lose adhesion. Regarding galvalume roofs have a clear protective coating applied to it and the Butyl Liquid Rubber will not adhere. One was to determine this is to scratch surface--- if no zinc comes off then a clear coat exists and the Butyl Liquid Rubber cannot be used. If areas show some rust corrosion that is an indication of the absence of a clear coat and the Butyl Liquid Rubber would work.

Butyl Liquid Rubber will not work on Galvalume. Depending on the age of the roof you may be able to scratch the metal and see if a clear coating comes off or not. Galvalume-coated steel will be less likely to rust than normal galvanized steel.

Facebook Facebook      Liquid Roof Twitter      Application of Liquid Rubber YouTube