I gave an old home and the fireplace on the outside shows cracks and shifted brick. I tried to use the fireplace and it was fine but eventually smokes started coming in the house. I know there are cracks but I'm looking for an inexpensive way to seal cracks on the inside so I can use the fireplace as I can't afford to fix it properly. Yes, the vent is open – I checked. I'm worried about using a spray sealant and actually really messing up my fireplace. Any suggestions?
Sealing inside fireplace
crackfireplacesealant
Best Answer
Cracks shouldnt create backdraft. The vent may be open but my flues always seem to get clogged. Birds/squirrels love to make nests in them.
Best bet is hire a sweeper. Or at least go up on the roof and check its clear.