Exterior door with bronze aluminum threshold over copper sill pan – galvanic corrosion?
We have a front entry door with water damage issues like those mentioned in the GBA article, ‘Sill pans for exterior doors’. The article mentioned that copper sill pans are good, but I’m wondering about galvanic corrosion. One quote we got was for a Thermatru fiberglass door with a bronze aluminum threshold over a copper sill pan. Prior to receiving the quote, I happened to read about copper and aluminum being two metals that when used together would result in galvanic corrosion.
Any thoughts? (Thanks!)
GBA Detail Library
A collection of one thousand construction details organized by climate and house part