US Capitol Case History Video


A Capitol Project (Final)


The massive, ornate Capitol dome may look like it’s made of plaster, but it’s actually layered cast iron. This cast iron was coated with several layers of white lead paint. This lead paint was removed from the Capitol dome using Sponge Media™ micro-abrasives to limit airborne lead dust, and to create a profile on the cast iron for the new coating system to adhere too.

For more on this project, click here or visit