If you have double or triple-pane glass and moisture is between the glass layers, no amount of external caulking will fix it. This is a . You have two options:
: Use a utility knife to cut the tip of the caulk tube at a 45-degree angle. Keep the hole small at first.
Old putty is rock hard. Soften it with a heat gun (careful not to break the glass). Scrape it out using a putty knife. Remove any metal glazing points holding the glass.
If you have double or triple-pane glass and moisture is between the glass layers, no amount of external caulking will fix it. This is a . You have two options:
: Use a utility knife to cut the tip of the caulk tube at a 45-degree angle. Keep the hole small at first.
Old putty is rock hard. Soften it with a heat gun (careful not to break the glass). Scrape it out using a putty knife. Remove any metal glazing points holding the glass.