Our Answer:

For high temperature applications, I recommend using a product such as the Rutland Pre-Mixed Black Furnace Cement. This product is designed to remain semi-pliable, even when fully cured. This should eliminate the need to redo the stove joints on a yearly basis.

In Response to Question:

Hi I have 2 Franklin wood burning stoves and I have been caulking the inside of the fire box with a Red Devil fireplace cement and mortar but every year I must clean it out to replace it because it turns hard like a rock and cracks. Is there another caulk that I might use that stays flexible and doesn't crack so I don't have to keep repeating this every year?

From Page: Wood Burning Stoves

Page ID: wood-burning-stoves