Ok so I am preparing my wall protection for my wood stove that's got to go in tomorrow because chimney guys will be here. I cannot seem to find a solid sheet of steel that is not Galvanized. So trying to find other options... I have found rolled aluminum flashing that is .19" thick. I know the requirements are .24" so can I double up on the .19 and make it .38" if i make sure they are flat against each other? Is it even OK to use the rolled flashing since there will be seams? Maybe overlap the seams? I'm so lost because I plan to do masonry around it but can't afford a mason at the moment so I need something that can give me the same clearance reduction with or without brick.