Vent: My old boss swore by a 3/8 inch joint, but I'll never go over a 1/4 inch now.

The extra mortar just makes a weaker wall and costs more, plain and simple. Anyone else find their old training was just dead wrong on this?

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You say a weaker wall, but honestly, how many walls actually fail from the joint size? Seems like one of those things that gets argued to death.

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