With the frames now free of the boat, the real work began: cleaning and disassembling them prior to resealing the glazing. Our aim was to ensure all surfaces were clean and free of oil/silicone so that the primer and butyl sealant could bond properly to both frame and glass. Cut into the butyl all around the frame perimeter on both sides with a new Stanley knife blade. The butyl may be very hard, so white spirit can help soften it. Do this several times to full depth so the glass is released from the frame. more