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Repair this drywall: What are these boards? They have mortar or plaster in them. Also my repair board is 1/16” thicker & would protrude so I think I'm going about this all
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Repaired a plaster wall that had detached from the lath. Surprisingly easy, although very messy : r/centuryhomes
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Cut hole for light switch into lath & plaster. How to stabilize loose lath? - Home Improvement Stack Exchange
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