You will probably have to do this several times because it will shrink into the hole.
Chimney inside cover.
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Shelter 9 in w x 9 in l black galvanized steel square chimney cap.
Constructed with durable 16 gauge 3 4 inch expanded metal mesh and 24 gauge steel lid painted black.
They can also protect your roof and reduce fire risk by trapping sparks and embers.
For pricing and availability.
It has a unique inside anchoring system that is secure and ideal for windy conditions and can be used on chimneys with or without an exposed flue tile.
Next use a good grid type of cover used to cover holes in dry wall and then drywall plaster over that.
A chase cover sometimes referred to as a chase top or flashing is a metal covering designed to keep things like rain snow and animals from entering a home via the chimney chase or opening.
Finally they help block downdrafts.
If you no longer need the chimney i would fill the hole with fiberglass or some type of insulation.
See more ideas about brick chimney exposed brick kitchen remodel.
Shelter 17 in w x 17 in l copper square chimney cap.
Designed to fit around your round metal chimney the chase covers the entire top of your chimney.