What Is Chimney Flashing? Chimney flashing is an aluminum, copper or galvanized steel waterproof addition to a home’s roof that seals the connection between the chimney and the roof.

Options include inexpensive fiberglass, classic cast iron and models with aroma, chroma or hydrotherapy.

The cavity created with the steel structure allows for a choice of insulation, including batten, blown or foam. “We can also spray additional concrete into the roof for more insulation ...

We have a 30-year-old galvanized-steel door that's suddenly not holding paint. I used oil primer and numerous topcoats, but nothing helps.—DAVID G., WOODINVILLE, WASHINGTON The problem is ...

Hot dip galvanizing of steel avoids the problem of pinholes, but not all steel can be galvanized, and that’s where zinc thermal spray and zinc-rich paints come in.