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Chimney & Fireplaces/Insulate Lower Vent Prefab Fireplace


I have a prefabricated fireplace that had exposed hard wire entering a hole in the metal wall of the bottom circulating vent box when I bought the home. I'm assuming this once ran to a blower that had been removed. I had previously removed the wire from this area but am left with the hole. Bugs and Cold Air love coming in through this access. I put a square of Vycor to temporally cover the hole today. The cold air is pouring in. I am not using the fireplace so is the Vycor ok? I would love to cover/insulate  the back side of the bottom louvered vent to block all air entry. I know I could not if I was using the fireplace. Is it acceptable to do this as I am not using it?

Hello Melissa, not sure what you have there, I would have a local Certified Chimney Sweep, (there you can look up by zip code to find one near you) take a first hand look at what you have, they should be able to help. you may not use it but forget and someone might.
Hope this helps

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James Ball


I am a chimney sweep with over 22 years of experience, CSIA certified and member of the NCSG, I can answer questions about smoky fire places, wood stoves, and heating units (boiler and furnace chimneys) do you need a relining? A cap? And much more


over 22 years

Chimney Safety Institute of America, National Chimney Sweep Guild

CSIA (Chimney Safety Institute of America) certified

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