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grandmum_gw

Old Furnace Vent Hole in Chimney

grandmum
10 years ago

When someone installs a direct vent furnace, what is the usual way to seal the old vent hole in the chimney?

In my case it looks like someone used a 4" duct cap in the old hole and sealed around it with caulking/sealant.

Is that standard protocol or should I be thinking of cementing over this duct cap as well?

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