Dave Sr. from SWISCO responded:
April 7, 2016
I suggest back bedding the glass in the frame so that the glass is not laying directly on the metal of the frame. Also, try squeezing the glazing spring to take some of the tension off and lessening the pressure on the glass edge. The 57-102 is mainly used for steel window frames.
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Dave Sr. from SWISCO responded:
April 12, 2016
These type of glazing clips are normally used in steel window sashes. I don't believe steel windows are affected by expansion and contraction as much as aluminum or vinyl. What I meant by back bedding is that you should put a layer of putty or caulking in the sash to make a bed for the glass to lay in. That way you are not having the glass up against the metal. The backing bedding should cushion the glass and keep it from cracking.
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