Mortar Joints


The mock exam says that a flush joint is adequate to shed water.
The resources that I read recommended otherwise. I checked Fundamentals of Building Construction. The version that I found says “The concave joint and vee joint shed water most effectively and are the most resistant to freeze-thaw.”
Could you please confirm if the book characterized the flush joint differently in a newer version.



Hey @ridlby; because of the way the question is phrased, I’m thinking ‘flush joint’ would shed water adequately. I notice in the phrase from the Fundamentals of Building Construction that it references the most effective joints for shedding water, not just ‘adequate’ joints. I’m also wondering if, because the question asked you to pick three answers, perhaps there were three more correct answers than a flush joint?

I wouldn’t say a flush joint is the best solution if water pooling/infiltration is a high priority issue, but it would work, as it creates one, solid surface for water to run down, as opposed to some other joints like ‘raked’ or ‘struck’.

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