Things are fast paced now, only waited 2 months for the vent window glass to arrive. Now that it is here I'm trying to install the glass into the frame using the "glass setting tape". It is not going well as I have the rubber mallet pounding quite hard against the edge of the glass and its not entering the frame. Just the top and bottom are starting to enter the frame....it needs to side in more towards the vertical portion of the frame.

Just had a thought, am I installing the setting tape backwards? I'm putting the rubber side against the glass and the fabric side against the frame. Is this correct?

Should I forget the setting tape and use some kind of caulk? If so, what?

Thanks