2007 at the Hammond Barn

[Phil Waterman]

Having replaced all the glass in 3 CMPs I'll try to add to the confusion:
First all of the original glass I’ve found was ¼ inch laminated safety glass.
Though I did find ordinary plate glass had been used as a replacement on one.
Laminated glass now comes in different thickness so be sure the glass shop uses the correct thickness.
Now as to the frame gasket material, originally they used glass tape which is very similar to friction tape though thicker and heavier.
If properly installed the glass will be a very tight fit into the channel.
I had one glass shop try to use silicon sealant, probably would have sealed well but it did not center the windshield between the frame edge and the glass cracked, probably on a sharp point of the channel.
Make sure that your frame has been well sanded and is as free of rust as possible.
Paint the frame and let it dry several days before taking it to the glass shop.
I have gone both ways just buying the glass cut, or having the glass installed by the glass shop. The first method is good if you have an original window for them to duplicate. But check that it is actually the same size, neither to smaller or larger.
You may discover that the frame has bulged this is most likely from water getting trapped in the frame and freezing. So be sure that the drain holes at the lower corners are open to allow any water that gets in at the top.