The National Park Service is undertaking restoration of the historic Cape Hatteras Lighthouse.
Research about how to remove red, white and black paint from the 150-year old structure is underway with a demonstration of dry-ice removal.
The new method would replace chemical peeling or sand blasting, both of which leave residue or damage masonry. The dry-ice demonstration using a nozzle only produced large chips of white paint in what appeared to be two paint layers which were easily picked up.Add to favorites
Credit: Original article published here.