I am tying a new building into an old one and I am concerned that any movement in the new one will cause a crack in the stucco at the tie in. My stucco sub-contractor said there is a 2 piece expansion or control joint that is set either side of the tie-in that interlocks, but he has no idea what it’s called or where to get it. Any ideas?.
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Any good stucco supply house will have expansion and control joints. You don't necessarily need anything with two pieces- just a mud-in expansion joint will be fine- it's meant to move (within reason).
Bob
Bob,
If he is worried about vertical movement, (I would be,) he should use a 2-piece Joint.
Samt