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thecosmicradiation OP t1_iubkb9x wrote

Reply to comment by No_Coyote_ in Is it safe to plug my fireplace? by thecosmicradiation

Will blocking the flue cause any issues with condensation?

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No_Coyote_ t1_iubo5oi wrote

Looks like an old house and not very airtight. I don’t think condensation would be any issue whatsoever.

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thecosmicradiation OP t1_iubwmya wrote

It is an extremely old house. Right now the airflow doesn't bother me so much because we're coming into summer but I imagine in autumn I'll want to block it more effectively.

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MidnightAdventurer t1_iucjvwd wrote

Condensation seems unlikely to be a significant issue. The only major issue I can see is if rain gets in the top of the chimney and you get a whole lot of water in there. Whether or not this is possible very much depends on what the top looks like
Is it safe for you to access the top of the chimney and put a cap over it or otherwise block it from the outside?

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