I have recently used gypsum to close a whole between the ceiling and the fireplace's stainless steel pipes. The gypsum comes in contact with the pipes. The pipes, as expected become very hot when the fireplace is lit. I am wondering if the gypsum may have any corrosive effects on the pipes. In the case of damage it will almost be impossible to replace the pipes, but i could possibly remove the gypsum while there is time! Your input much appreciated!
stainless steel is impervious to most things. gypsum shouldn't have any effect
No problem with gypsum or other calcium- based building materials. Stainless is adversely effected by some chlorides so do not wash your stainless utensils with Clorox - bleach like solutions without rinsing them well.
