our fireplace has a brick front extending about 18 inches above
there's a vertical crack running up from firebox to mantle. this crack
barely noticable when fireplace is not in use, but when using, the
widens to about an inch wide. you can look through the crack and see
i know this is dangerous.. we don't use the fireplace.. but now we are
the house and i want to repair it. all mason's i speak to don't seem
to believe me when i explain this to them.
what could it be? someone told me prehaps the lentil doesn't have
enough room to expand when hot and it's pushing the sidewalls out.
how could it be fixed? slightly smaller lentil?
thanks for any advice...