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  1. enggmom

    Replacement mortar cracking on repoint of load bearing masonry

    We are currently repointing the masonry on a 40 yr old building. The mortar that is being removed is very hard (Type M perhaps). We are repointing with Type N and it's cracking. We did a mock up with Type O and it cracked within 20 mins. I suspect the procedure the mason followed for the mock...

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