So I just had a new hearth extension built with brick and mortar....how long should I wait to light my insert? Everything but the hearth extension is existing masonary....
Brick and mortar cure time
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Anybody? I have heard between 48hours and 28 days....the only new brick and mortar is the hearth extension (I have an insert) but I don't want to crack the mortar....
If you're in a hurry, perhaps you could lay a wet towel on the new work, then insulate it from the insert's heat with, oh I don't know, aluminum foil or some leftover fiberglass or something.
Cure time would be about 7 days. You could keep a damp towel over it for 7 days, that will help out in the cureing proccess.
i could not wait,so i kept a spray bottle with water right by the stove,kept it constantly wet and i still got a little tiny crack in the mortar,so i think your getting good advice by waiting.
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