Why Does Wood Stove Glass Break?

There are several reasons to cause your wood stove glass break. If you have had your stove a while and the glass eventually breaks, it usually just means it is "wore out". By this I mean over the years do to expansion and contraction, chemicals from the wood and glass cleaners, your glass is continually breaking down. Eventually to a point where it fails and cracks. 






      The next most common reason is do to improper installation. The Ceramic glass should be installed what we call "finger tight". Meaning not loose, but surly not tight. The tendency is to install the glass tightly to get a good seal. But the glass is produced to handle the high temperatures. But by doing this the glass expands very slowly. The stove however is expanding at a much faster rate. Then the glass can get in a bind and increase the pressure on the glass and pop the glass.

There also should be a glass gasket installed around the glass edge to protect it. Without the gasket to cushion the glass a couple things can happen. The metal temperatures can spike sometimes above the 1470 degree threshold that the glass can withstand. Or, when installed the glass clips can be tightened up to much and when the metal expands it applies to much pressure to the glass and breaks it. 

The glass can also break from force also. Ceramic glass is not any stronger than that of normal window glass. It is just designed to handle the high temperatures of the wood stove. So if it get hit by a log, fireplace tool or dropped on the floor, it will break easily.   

We have few customers that has a wood stove or fire place glass broken. And we stepped up and helped them.


 Woodstove Fireplace Glass

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