08/21/2025

Same. I imagine the downvotes were from people that didn’t even know there is a top and bottom to block (or most brick for that matter) and thought they meant flipping it side ways. “What do you mean upside-down? I see holes, it’s the right way”.

– u/
In subreddit r/

In a post titled:

Can I lay brick on top of open CMU concrete block?

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