While I still consider JLC to be a trusted disseminator of valuable information in the ever-changing world of building technology, I can’t imagine how Milton Grenfell’s letter was deemed fit for print (“Don’t Use Stainless Steel Screws With Copper,” 4/09).
Mr. Grenfell cites the galvanic (electrochemical) scale to make his point. There are many versions of this scale — which shows reactions between dissimilar metals — and there are several different common alloys of stainless steel. Copper’s reaction to some types of stainless steel is actually less severe than its reaction to lead, which Mr....
to read the full article.