I have exposed a brick chimney breast in a late Victorian (1885) terraced house in the north of England.
I've cleaned the bricks up and am really happy with how it looks. I've started looking into sealing the bricks to prevent dust, but I see a lot of conflicting information, with some saying that brick of that age shouldn't be sealed because it will cause moisture to move through the mortar instead of the brick, while others seem to think it's absolutely fine.
The chimney breast is in a party wall, so not external.
Should I seal this brick? I want a matt finish and I'm happy if the bricks darken slightly.