Re: How do you ruin a crown sheet?

Here is one that dropped, but only on one side. Usually, when one drops, the whole crown sheet is pulled off the staybolts, tears, and folds back against the sides of the firebox. The red arrow shows the low water line, where the steel became overheated. To the left of the arrow, you can see where the crown sheet is "quilted" between the staybolts. The part that is still attached to the staybolts, would be considered "scorched" or "burned.

Depending on how badly the crown sheet is burned, it may be possible to salvage it and get it to seal up on the staybolts again, but if it is too distorted and the holes stretched too much, the sheet will need to be replaced. It's not too rare to find old crown sheets that are quilted around the staybolts from a minor low water event at some point.